Animal Fins: Membranous appendage of fish and other aquatic organisms used for locomotion or balance.Fin Whale: The species Balaenoptera physalus, in the family Balaenopteridae, characterized by a large, strongly curved, dorsal fin. It is the second largest of the WHALES, highly migratory, but rarely seen near the shore.Animal Structures: Organs and other anatomical structures of non-human vertebrate and invertebrate animals.Swimming: An activity in which the body is propelled through water by specific movement of the arms and/or the legs. Swimming as propulsion through water by the movement of limbs, tail, or fins of animals is often studied as a form of PHYSICAL EXERTION or endurance.Perciformes: The most diversified of all fish orders and the largest vertebrate order. It includes many of the commonly known fish such as porgies, croakers, sunfishes, dolphin fish, mackerels, TUNA, etc.Zebrafish: An exotic species of the family CYPRINIDAE, originally from Asia, that has been introduced in North America. They are used in embryological studies and to study the effects of certain chemicals on development.Extremities: The farthest or outermost projections of the body, such as the HAND and FOOT.Animal Experimentation: The use of animals as investigational subjects.Animals, LaboratoryAmputeesAnimal Rights: The moral and ethical bases of the protection of animals from cruelty and abuse. The rights are extended to domestic animals, laboratory animals, and wild animals.Animal Welfare: The protection of animals in laboratories or other specific environments by promoting their health through better nutrition, housing, and care.Animal Care Committees: Institutional committees established to protect the welfare of animals used in research and education. The 1971 NIH Guide for the Care and Use of Laboratory Animals introduced the policy that institutions using warm-blooded animals in projects supported by NIH grants either be accredited by a recognized professional laboratory animal accrediting body or establish its own committee to evaluate animal care; the Public Health Service adopted a policy in 1979 requiring such committees; and the 1985 amendments to the Animal Welfare Act mandate review and approval of federally funded research with animals by a formally designated Institutional Animal Care and Use Committee (IACUC).Laboratory Animal Science: The science and technology dealing with the procurement, breeding, care, health, and selection of animals used in biomedical research and testing.Poison Control Centers: Facilities which provide information concerning poisons and treatment of poisoning in emergencies.Sunscreening Agents: Chemical or physical agents that protect the skin from sunburn and erythema by absorbing or blocking ultraviolet radiation.Extreme Heat: High temperature weather exceeding the average and of several weeks duration. Extreme heat is a dangerous situation that can bring on health emergencies in susceptible people.Poisoning: A condition or physical state produced by the ingestion, injection, inhalation of or exposure to a deleterious agent.Sunburn: An injury to the skin causing erythema, tenderness, and sometimes blistering and resulting from excessive exposure to the sun. The reaction is produced by the ultraviolet radiation in sunlight.Clothing: Fabric or other material used to cover the body.Skin: The outer covering of the body that protects it from the environment. It is composed of the DERMIS and the EPIDERMIS.PaintingsArtPhotography: Method of making images on a sensitized surface by exposure to light or other radiant energy.Posters as Topic: Single or multi-sheet notices made to attract attention to events, activities, causes, goods, or services. They are for display, usually in a public place and are chiefly pictorial.SculptureChromosome Painting: A technique for visualizing CHROMOSOME ABERRATIONS using fluorescently labeled DNA probes which are hybridized to chromosomal DNA. Multiple fluorochromes may be attached to the probes. Upon hybridization, this produces a multicolored, or painted, effect with a unique color at each site of hybridization. This technique may also be used to identify cross-species homology by labeling probes from one species for hybridization with chromosomes from another species.Byzantium: An ancient city, the site of modern Istanbul. From the 4th to 15th centuries the empire extended from southeastern Europe to western Asia, reaching its greatest extent under Justinian (527-565). By about 1000 A.D. it comprised the southern Balkans, Greece, Asia Minor, and parts of southern Italy. The capture of Constantinople in 1453 marked the formal end of the Byzantine Empire. (From Webster's New Geographical Dictionary, 1988)Videotape Recording: Recording of visual and sometimes sound signals on magnetic tape.Unedited FootageVideo Recording: The storing or preserving of video signals for television to be played back later via a transmitter or receiver. Recordings may be made on magnetic tape or discs (VIDEODISC RECORDING).Fishes: A group of cold-blooded, aquatic vertebrates having gills, fins, a cartilaginous or bony endoskeleton, and elongated bodies covered with scales.Video Games: A form of interactive entertainment in which the player controls electronically generated images that appear on a video display screen. This includes video games played in the home on special machines or home computers, and those played in arcades.Software: Sequential operating programs and data which instruct the functioning of a digital computer.User-Computer Interface: The portion of an interactive computer program that issues messages to and receives commands from a user.Suggestion: The uncritical acceptance of an idea or plan of action.Food Labeling: Use of written, printed, or graphic materials upon or accompanying a food or its container or wrapper. The concept includes ingredients, NUTRITIONAL VALUE, directions, warnings, and other relevant information.Deception: The act of deceiving or the fact of being deceived.NewsNewspapers: Publications printed and distributed daily, weekly, or at some other regular and usually short interval, containing news, articles of opinion (as editorials and letters), features, advertising, and announcements of current interest. (Webster's 3d ed)Totiviridae: A family of RNA viruses that infect fungi and protozoa. There are three genera: TOTIVIRUS; GIARDIAVIRUS; and LEISHMANIAVIRUS.Encyclopedias as Topic: Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)TailLife Support Systems: Systems that provide all or most of the items necessary for maintaining life and health. Provisions are made for the supplying of oxygen, food, water, temperature and pressure control, disposition of carbon dioxide and body waste. The milieu may be a spacecraft, a submarine, or the surface of the moon. In medical care, usually under hospital conditions, LIFE SUPPORT CARE is available. (From Webster's New Collegiate Dictionary)Tuna: Common name for various species of large, vigorous ocean fishes in the family Scombridae.Dolphins: Mammals of the families Delphinidae (ocean dolphins), Iniidae, Lipotidae, Pontoporiidae, and Platanistidae (all river dolphins). Among the most well-known species are the BOTTLE-NOSED DOLPHIN and the KILLER WHALE (a dolphin). The common name dolphin is applied to small cetaceans having a beaklike snout and a slender, streamlined body, whereas PORPOISES are small cetaceans with a blunt snout and rather stocky body. (From Walker's Mammals of the World, 5th ed, pp978-9)Microbubbles: Small encapsulated gas bubbles (diameters of micrometers) that can be used as CONTRAST MEDIA, and in other diagnostic and therapeutic applications. Upon exposure to sufficiently intense ultrasound, microbubbles will cavitate, rupture, disappear, release gas content. Such characteristics of the microbubbles can be used to enhance diagnostic tests, dissolve blood clots, and deliver drugs or genes for therapy.Bottle-Nosed Dolphin: The species Tursiops truncatus, in the family Delphinidae, characterized by a bottle-shaped beak and slightly hooked broad dorsal fin.APUD Cells: Cells with the capacity to take up and decarboxylate the amine precursors DIHYDROXYPHENYLALANINE or 5-HYDROXYTRYPTOPHAN. This is a property of endocrine cells of neural and non-neural origin. APUDOMA is a general term collectively applied to tumors associated with APUD cells.Library AssociationsDictionaries, MedicalDictionaries as Topic: Lists of words, usually in alphabetical order, giving information about form, pronunciation, etymology, grammar, and meaning.Methanosarcinales: An order of anaerobic methanogens in the kingdom EURYARCHAEOTA. There are two families: METHANOSARCINACEAE and Methanosaetaceae.Methanosarcinaceae: A family of anaerobic METHANOSARCINALES whose cells are mesophilic or thermophilic and appear as irregular spheroid bodies or sheathed rods. These methanogens are found in any anaerobic environment including aquatic sediments, anaerobic sewage digesters and gastrointestinal tracts. There are four genera: METHANOSARCINA, Methanolobus, Methanothrix, and Methanococcoides.
Genetics of species differences in sailfin and shortfin mollies. (1/139)(+info)
Small RNAs have a big impact on regeneration. (2/139)A number of lower vertebrates including urodele amphibians and teleost fish are remarkably adept at repairing and regenerating damaged tissues and organs. Freshwater planarians are even more amazing, capable of regenerating entire body plans from small amputated fragments. In contrast, mammalian regenerative capacity is quite limited but of intense interest, especially related to human health and disease. For those organisms capable of robust regeneration, a common theme is the use of stem cells to replace complex tissues. Key questions remain as to the origin of these cells, whether there are pools of such cells that migrate to injured regions or whether they are generated on site. Beyond their origin, how are the genetic pathways that enable differentiation into multiple cell types and tissues regulated? microRNAs (miRNAs) are small noncoding RNAs that have recently been shown to play important roles in controlling stem cell self-renewal, proliferation and differentiation. Some of these are thought to be required to maintain "stemness". Here, we summarize recent work on the role of miRNAs in stem cells and their roles during regeneration. (+info)
Pathological study on the scuticociliatosis affecting farmed Japanese flounder (Paralichthys olivaceus) in Japan. (3/139)Pathological findings associated with scuticociliatosis in farmed Japanese flounder in Japan are described. Ten moribund fishes, farmed in Tottori Prefectural Fisheries Experimental Station, showed cutaneous ulcers, darkened skin, fin and tail rot, exophthalmia and alterations in swimming behaviour. Histopathologically, severe epidermal degeneration and necrosis, hyperplasia of branchial epithelium, myositis, myelitis, encephalitis associated with heavy accumulation of scuticociliates in the periorbital cavity and optic nerve fiber were observed. Moreover, masses of ciliates were found to feed on the host tissues such as skeletal muscles, gills and brain, causing severe degenerative changes associated with abundant neutrophilic and lymphocytic infiltration. These findings suggest that the present scuticociliate, Miamiensis avidus, is a highly invasive and destructive pathogen infecting Japanese flounder and capable of developing systemic fatal infection. (+info)
Zebrafish sp7:EGFP: a transgenic for studying otic vesicle formation, skeletogenesis, and bone regeneration. (4/139)(+info)
Entraining in trout: a behavioural and hydrodynamic analysis. (5/139)(+info)
Limb regeneration is impaired in an adult zebrafish model of diabetes mellitus. (6/139)(+info)
Zebrafish fin immune responses during high mortality infections with viral haemorrhagic septicemia rhabdovirus. A proteomic and transcriptomic approach. (7/139)(+info)
Male mate choice scales female ornament allometry in a cichlid fish. (8/139)(+info)
Notch regulates blastema proliferation and prevents differentiation during adult zebrafish fin regeneration | Development
Zebrafish have the capacity to regenerate several organs, including the heart and fins. Fin regeneration is epimorphic, involving the formation at the amputation plane of a mass of undifferentiated, proliferating mesenchymal progenitor-like cells, called blastema. This tissue provides all the cell types that form the fin, so that after damage or amputation the fin pattern and structure are fully restored. How blastema cells remain in this progenitor-like state is poorly understood. Here, we show that the Notch pathway plays an essential role during fin regeneration. Notch signalling is activated during blastema formation and remains active throughout the regeneration process. Chemical inhibition or morpholino-mediated knockdown of Notch signalling impairs fin regeneration via decreased proliferation accompanied by reduced expression of Notch target genes in the blastema. Conversely, overexpression of a constitutively active form of the Notch1 receptor (N1ICD) in the regenerating fin leads to ...
shark fin trade Archives - Saltwater Life
I have written before about the origins of shark fin soup, however it is worth re-capping slightly: The cartilage in the fins is usually shredded and used primarily to provide texture and thickening to shark fin soup, a traditional Chinese soup or broth dating back to the Song Dynasty (960-1279). The dish is considered a luxury item embodying notions of hospitality, status and good fortune.. The origin of the dish can be traced to the Emperor Taizu of the Northern Song, who reigned from 960-976. It is said that he established shark fin soup to showcase his power, wealth and generosity. The dishs popularity increased during the Ming Dynasty (1368-1644) as a result of an admiral of the imperial navy; Zheng He, who commanded expeditionary voyages around Asia and East Africa from 1405-1433, bringing back fins that fishermen had discarded. From this point onwards shark fin soup became an established dish and by the time of the Qing Dynasty (1644-1912) was in high demand.. It is not surprising that ...
Patente US2782926 - Apparatus for measuring fineness modulus - Google Patentes
Feb. 26, 1957 w. E. SAXE 2,782,926 APPARATUS FOR MEASURING FINENESS MODULUS Filed Feb. 26, 195] 8 Sheets-Shet 5 m2 /33 /94 A95 A96 /97 $202 $205 $204 .205 5206 $2 /NVNTOR. Wag-ER E. Snxa BY Hi5 ATTORNEYS. IgHRRIS, K/dcH, FOSTER &H MI?/$ Feb. 26, 1957 w. E. SAXE 2,782,926 APPARATUS FOR MEASURING FINENESS MODULUS FiledFeb. 26, 1951 8 Sheets-Sheet 4 l/y VENTOR. WALTER 5. 5H x5 B [-115 n rroklvavsl HER/PIS, K/EcH, F05 T15R69: Hmmls Feb. 26, 1957 w. E. SAXE 2,782,926 APPARATUS FOR MEASURING FINENESS MODULUS Filed Feb. 26, 1951 a Sheets-Sheet 5 BY HIS HTTORNEKS. HARRIS, K n: CH, FOSTER 3: HARRIS Feb. 26, 1957 w. E. SAXE 2,782,926 APPARATUS FOR MEASURING FINENESS MODULUS Filed Feb. 26, 1951 8 Sheets-Sheet 6 ig L4 365 66 /NVE NTOR. 376 WALTER 5.5mm: BY H15 HTTORNCKS. HARP/5, K/ECH, F05 75/? a HH ems ag. ai -fled; Feb. 26, 1957 w. E. SAXE 2,732,926 APPARATUS FOR MEASURING FINENESS MODULUS Filed Feb. 26, 1951 8 Sheets-Sheet v A L 1 L 1 1 asl 52.2 093 3914 395 390 WALTER 15.56))(5 B) HIS HTTOPNEKi- ...
Regeneration of breeding tubercles on zebrafish pectoral fins requires androgens and two waves of revascularization |...
Sexually dimorphic breeding tubercles (BTs) are keratinized epidermal structures that form clusters on the dorsal surface of the anterior rays of zebrafish male pectoral fins. BTs appear during sexual maturation and are maintained through regular shedding and renewal of the keratinized surface. Following pectoral fin amputation, BT clusters regenerate after the initiation of revascularization, but concomitantly with a second wave of angiogenesis. This second wave of regeneration forms a web-like blood vessel network that penetrates the supportive epidermis of BTs. Upon analyzing the effects of sex steroids and their inhibitors, we show that androgens induce and estrogens inhibit BT cluster formation in intact and regenerating pectoral fins. Androgen-induced BT formation in females is accompanied by the formation of a male-like blood vessel network. Treatment of females with both androgens and an angiogenesis inhibitor results in the formation of undersized BT clusters when compared with females ...
Fin - Wikipedia
A fin is a thin component or appendage attached to a larger body or structure. Fins typically function as foils that produce lift or thrust, or provide the ability to steer or stabilize motion while traveling in water, air, or other fluid media. Fins are also used to increase surface areas for heat transfer purposes, or simply as ornamentation. Fins first evolved on fish as a means of locomotion. Fish fins are used to generate thrust and control the subsequent motion. Fish, and other aquatic animals such as cetaceans, actively propel and steer themselves with pectoral and tail fins. As they swim, they use other fins, such as dorsal and anal fins, to achieve stability and refine their maneuvering. Foil shaped fins generate thrust when moved, the lift of the fin sets water or air in motion and pushes the fin in the opposite direction. Aquatic animals get significant thrust by moving fins back and forth in water. Often the tail fin is used, but some aquatic animals generate thrust from pectoral ...
Dorsal fin - Wikipedia
A dorsal fin is classified as a medial, unpaired fin that is located on the midline of the backs of some aquatic vertebrates. In development of the embryo in teleost fish, the dorsal fin arises from sections of the skin that from a caudal fin fold. The larval development and formation of the skeleton that support the median fins in adults result in pterygiophores. The skeletal elements of the pterygiophore includes basals and radials. The basals are located at the base of the dorsal fin, and are closest to the body. The radials extend outward from the body to support the rest of the fin. These elements serve as attachment sites for epaxial muscles. The muscles contract and pull against the basals of the pterygiophores along one side of the body, which helps the fish move through water by providing greater stability. In these types of fish, the fins are made of 2 main components. The first component is the dermal fin rays known as lepidotrichia, and the endoskeletal base with ...
Wholesale Fineness Powder, China Wholesale Fineness Powder Manufacturers & Suppliers | Made-in-China.com
Sharks are among the most threatened of marine species worldwide due to unsustainable overfishing. They are primarily killed for their fins alone, to fuel the growing demand for shark fin soup, which is an Asia delicacy. A new study by University of Miami (UM) scientists in the journal Marine Drugs has discovered high concentrations of BMAA in shark fins, a neurotoxin linked to neurodegenerative diseases in humans including Alzheimers and Lou Gehrig Disease (ALS). The study suggests that consumption of shark fin soup and cartilage pills may pose a significant health risk for degenerative brain diseases.. "Shark fins are primarily derived through finning, a practice where by shark fins are removed at sea and the rest of the mutilated animal is thrown back in the water to die," said co-author Dr. Neil Hammerschlag, research assistant professor of Marine Affairs & Policy and director of the RJ Dunlap Marine Conservation Program (RJD) at UM. "Estimates suggest that fins from as many as 70 million ...
Dorsal soft rays (total): 11; Anal soft rays: 6; Vertebrae: 31 - 32. Dorsum of head, body and paired fin bases with whitish reticulated or whitish spotted pattern; faint dark grey axial stripe covering three scale rows; skin around lateral line pores whitish; posterior part of pectoral fin with 5-7 faint annular bands; 20-21 branched pelvic fin rays; 49-54+2 lateral line scales; pelvic fin origin below dorsal fin origin; pectoral fin origin posterior to corner of mouth; pelvic fin reaching anal fin origin; small soft elevated patches of fine tubercles on first pectoral fin rays in males; tubercles on simple pectoral fin ray not enlarged; absence of cavity around mouth and absence of skin-fold between oropectoral membrane and ventral surface of head (Ref. 51729). ...
MNHN - Muséum national d'Histoire naturelle - The dlx5a/dlx6a Genes Play Essential Roles in the Early Development of Zebrafish...
The Dlx5 and Dlx6 genes encode homeodomain transcription factors essential for the proper development of limbs in mammalian species. However, the role of their teleost counterparts in fin development has received little attention. Here, we show that dlx5a is an early marker of apical ectodermal cells of the pectoral fin buds and of the median fin fold, but also of cleithrum precursor cells during pectoral girdle development. We propose that early median fin fold establishment results from the medial convergence of dlx5a-expressing cells at the lateral edges of the neural keel. Expression analysis also shows involvement of dlx5a during appendage skeletogenesis. Using morpholino-mediated knock down, we demonstrate that disrupted dlx5a/6a function results in pectoral fin agenesis associated with misexpression of bmp4, fgf8a, and1 and msx genes. In contrast, the median fin fold presents defects in mesenchymal cell migration and actinotrichia formation, whereas the initial specification seems to occur
THE MYSTERIOUS LITTLE FATTY FIN | Journal of Experimental Biology
Sitting on the back of many fishes, in between the dorsal fin and the tail, is an enigmatic little fatty flap of skin called the adipose fin. It looks a bit like an extra dorsal fin, and though its present in eight large groups of fishes, no one knows why its there. It might help prevent flow from wrapping over the top of the fish; it might help counteract forces from the anal fin, which is in about the same place, but on the ventral side; it might be a flow sensor; or it might not do anything, persisting due to developmental constraints. Whatever the fins function, most fisheries scientists think its not terribly important, because they regularly snip it off to mark millions of hatchery fish released into the wild each year.. Thomas Reimchen and Nicola Temple at the University of Victoria in Canada devised a simple test to find out how important the adipose fin really is. They swam steelhead trout at speeds between about one and three body lengths per second, measured the tail beat ...
Airline dumps shark's fin cargo | CNN Travel
Ostorhinchus angustatus, Broadstriped cardinalfish
Espinas dorsales (total): 8; Radios blandos dorsales (total): 9; Espinas anales 2; Radios blandos anales: 8. Whitish with 5 horizontal stripes (brassy to dark brown in color); dark spot at base of middle caudal fin rays; fin rays light red (Ref. 2334). Greatest depth of body 2.7-3.2 in SL (Ref. 90102). Dorsal-fin rays VII-I, 9; anal-fin rays II, 8; pectoral fin rays 14; pelvic fin rays I, 5; pored lateral line scales 24; predorsal scales 4; circumpeduncular scales 12; total gill rakers 19, developed gill rakers 14; body white colored, with five poorly defined dark brown stripes on lateral surface of body, posterior end of third stripe reaching black spot on base of caudal fin; base of caudal fin with spot subequal in size to pupil (Ref. 93839). ...
Giant oarfish - Wikipedia
This species is the worlds longest bony fish, reaching a record length of 11 m (36 ft); however, unconfirmed specimens of up to 17 m (56 ft) have been reported. It is commonly measured to 3 m (9.8 ft) in total length. The maximum recorded weight of a giant oarfish is 270 kg (600 lb). Its shape is ribbonlike, narrow laterally, with a dorsal fin along its entire length from between its eyes to the tip of its tail. The fin rays are soft and may number up to 400 or more. At the head of the fish, the rays are lengthened forming a distinctive red crest. Its pectoral and pelvic fins are nearly adjacent. The pectoral fins are stubby while the pelvic fins are long, single-rayed, and reminiscent of an oar in shape, widening at the tip. Its head is small with the protrusible jaw typical of lampriformes; it has 40 to 58 gill rakers, and no teeth. The organs of the giant oarfish are concentrated toward the head end of the body, possibly enabling it to survive losing large portions of its tail. ...
Pectoral fin Stick to the body | Discus Fish for Sale - CLC Discus Enterprise
Positional cloning of a temperature-sensitive mutant emmental reveals a role for Sly1 during cell proliferation in zebrafish...
TY - JOUR. T1 - Positional cloning of a temperature-sensitive mutant emmental reveals a role for Sly1 during cell proliferation in zebrafish fin regeneration. AU - Nechiporuk, Alex. AU - Poss, Kenneth D.. AU - Johnson, Stephen L.. AU - Keating, Mark T.. N1 - Funding Information: We are grateful to the members of Stephen Johnsons lab for technical advice during the mutagenesis screen. We thank Jennifer Sheppard, Janet Finney, Ann Hillam, Lindsay Wilson, Angela Sanchez, and Soo Kim for excellent fish care. We also thank the members of the Electron Microscopy core facilities at the Department of Cell Biology, Harvard Medical School for help with transmission electron microscopy. K.D.P. was supported by a postdoctoral fellowship from the Helen Hay Whitney Foundation. S.L.J. was supported by NIH PO1 Grant HD39952.. PY - 2003/6/15. Y1 - 2003/6/15. N2 - Here, we used classical genetics in zebrafish to identify temperature-sensitive mutants in caudal fin regeneration. Gross morphological, histological, ...
Table 17 Malaysian exports of shark fin
1. A thick soup containing 10 gm of individual fin needles, a hint of crab meat and some thin slices of Chinese mushrooms. Quantitatively, the picture on the label is not representative of the contents.. 2. A light saline solution containing 180 gm of approximately 1.5 cm long fin needles in bundles.. 3. A thick soup containing 30 gm of long individual fin needles. Quantitatively, the picture on the label is not representative of the contents.. 4. A thick soup containing 20gm of individual fin needles, crab meat and chopped Chinese mushrooms. Quantitatively, the picture on the label is not representative of the contents.. 5. A light soup base containing 20gm of approximately 6-8 cm long fin needles in bundles. ...
Nearly $1 million worth of shark fins seized by wildlife inspectors in Florida - CNN
Has China lost its taste for shark fin? - latimes
California shark fin ban signed into law | Reuters
Coryphaena hippurus, Common dolphinfish : fisheries, aquaculture, gamefish
Dorsal spines (total): 0; Dorsal soft rays (total): 58-66; Anal spines: 0; Anal soft rays: 25 - 31; Vertebrae: 31. This species is distinguished by having the following characters: mature males with prominent bony crest in front of the head; greatest body depth in adults less than 25% of standard length; tooth patch on tongue small and oval; single dorsal fin extending from above eye almost to caudal fin with 58-66 rays; a concave anal fin extending from anus almost to caudal fin; pectoral fin more than half of head length; lateral-line scales at least 200 (Ref. 9648). Colour of body metallic blue-green on the back (fading to grey with green tinge when dead), sides silver with golden sheen, and 1 row of dark spots or golden blotches running below dorsal fin and 1, 2, or more rows on and below lateral line, some scattered irregularly; dorsal and anal fins black, the latter with a white edge; pectoral fins pale; caudal fin silvery with a golden sheen; in juveniles, only tips of caudal-fin lobes ...
Diagramma melanacrum, Blackfin slatey
Dorsal spines (total): 10 - 11; Dorsal soft rays (total): 22-24; Anal spines: 3; Anal soft rays: 6 - 7. Tubed lateral line scales 55-57; outer row of teeth in jaws slightly enlarged, movable; swim bladder with 3 short anterior projections; third or fourth dorsal spine longest, 1.8-1.9 in head; first dorsal spine 1.7-2.3 in length of second; interspinous membrane of dorsal fin not incised; pelvic fins reaching vent or slightly beyond, 1.2-1.3 in head; body light yellow dorsally, shading to pale silvery grey on sides and ventrally, with numerous small dark brown spots, which are smaller and form oblique rows on body below lateral line; head light purplish grey with numerous small dark brown spots, opercular membrane black; dorsal fin and upper 3/4 of caudal fin with small dark spots; lower 1/4 of caudal fin black; anal and pelvic fins mainly black (Ref. 44143); dorsal and caudal fins mainly yellow, caudal fin with broad black lower edge margin, caudal fin may be slightly emarginate to truncate; ...
ZFIN Anatomy Ontology: maxillary barbel
Barbel that is attached to the distal end of the maxilla and that originates on the side of the mouth. Maxillary barbel is paired. Maxillary barbel has considerable range of motion, with contraction and protraction motivated by maxillary blood sinus. The maxillary barbel integument has taste buds. Capable of regeneration. (1 ...
Mesodermal origin of median fin mesenchyme and tail muscle in amphibian larvae. | Sigma-Aldrich
Tiktaalik roseae: Q&A Session with Neil Shubin
Q: Would you describe the unique physical characteristics of Tiktaalik?. A: When we look at this creature what we see is a mosaic of fish features and those we find in land living animals. Lets look at the fish parts first. There are scales like a fish; you can see they look like chain mail here. There are even scales on the fin. But the other thing that is very fish-like is that it has a fin. There is the fin. See these little bones here; those are fin-rays that you even see in fishes like salmon and trout and so forth. So it has scales and fins like a fish. Now, like land-living animals, it has a few things that are quite different. A flat head with eyes on top. It has a neck. Fish have a situation where the head is actually physically attached to the shoulder. What we have in this creature, and you can see it in the skeleton, is that you have a head that is actually separate from the shoulder, meaning that it has a neck that can move the head around. Other interesting features are that ...
Awaous lateristriga, West African freshwater goby : fisheries
Rückenflossenstacheln (insgesamt): 7; Rückenflossenweichstrahlen (insgesamt): 10-11; Afterflossenstacheln 1; Afterflossenweichstrahlen: 9 - 11. Diagnosis: snout 33-38% of head length; mouth with 2-3 rows of small, caniniform teeth; head length 24-31% of standard length; 2 fleshy processes on posterior of gill chamber, just inside gill opening; 35 or less cycloid predorsal scales, extending to vertical level of posterior part of preoperculum, predorsal scales may rarely be absent; cheeks and operculum naked; body with strongly ctenoid scales, numbering 54-66 (usually 59 to 63) in longitudinal series (including usually 3-4 scales on caudal fin base); 13-20 scales in rearward transverse series; 16-21 scales around caudal peduncle; 1st dorsal fin: VI; second dorsal fin: I,10 (rarely 11); anal fin: I,9-11 (usually 10), opposed to 2nd dorsal fin; pectoral fins: 14-17; caudal fin: 17 segmented rays (11 to 13 of which are branched); pelvic fins oval; yellowish dorsally, with several (about 14) bands ...
Gulf butterfish - Wikipedia
This species is distinguished by the following characters: body oval, deep (its depth less than 2.5 times in total length) and strongly compressed; eye surrounded by a small area of adipose tissue; snout short and blunt, lower jaw projecting somewhat beyond upper; mouth small, tip of maxillary not reaching below eye margin; teeth in jaws very small, in one row while those in the upper jaw flattened and with 3 tiny cusps; dorsal and anal fin bases very long (about equal in length), the anterior fin rays elevated, but fins not falcate, and both fins preceded by 3 short, weak, spines; caudal fin deeply forked; pectoral fins long (longer than head) and pointed; pelvic fins absent; distinct series of 17 to 25 pores along anterior half of body under the dorsal fin; lateral line high, following dorsal profile; scales small, present also on cheeks; caudal vertebrae 16 to 18; body color pale blue above, silvery below (fading after death), no spots.. ...
Clarotes laticeps, Widehead catfish : fisheries
الأشواك الظهرية (المجموع): 2; الأشعة الظهرية الناعمة (المجموع): 5-7; شوكة شرجية 0. Diagnosis: adipose fin rayed in adults, 1st ray forming a spine (not visible in juveniles); adipose-fin rays becoming visible at sizes of 90-100 mm SL, and the spine at 200 mm; dentition very well developed: premaxillary tooth plate broad (38-45% of head length), palatine dentition consisting of an elongate vomerine plate and of a dermo-palatine plate in young individuals (60-70 mm SL); palatine tooth plates narrow and long with much weaker dentition; nasal barbel long, reaching at least to anterior part of orbit; maxillary barbel very long, exceeding at least the anterior part of dorsal fin and often reaching to adipose fin; caudal-fin lobes marked by a dark band; cranial bones well developed; length of occipital process usually less than 1.4 times its width (Ref. 57126). ...
Development and evolution of the muscles of the pelvic fin
Locomotor strategies in terrestrial tetrapods have evolved from the utilisation of sinusoidal contractions of axial musculature, evident in ancestral fish species, to the reliance on powerful and complex limb muscles to provide propulsive force. Within tetrapods, a hindlimb-dominant locomotor strategy predominates, and its evolution is considered critical for the evident success of the tetrapod transition onto land. Here, we determine the developmental mechanisms of pelvic fin muscle formation in living fish species at critical points within the vertebrate phylogeny and reveal a stepwise modification from a primitive to a more derived mode of pelvic fin muscle formation. A distinct process generates pelvic fin muscle in bony fishes that incorporates both primitive and derived characteristics of vertebrate appendicular muscle formation. We propose that the adoption of the fully derived mode of hindlimb muscle formation from this bimodal character state is an evolutionary innovation that was ...
Cristatogobius rubripectoralis, Redfin crestedgoby
Dorsal spines (total): 7; Dorsal soft rays (total): 9-11; Anal spines: 1; Anal soft rays: 8 - 10; Vertebrae: 25 - 26. First dorsal fin distally rounded without filamentous spines. Posterior margin of caudal fin rounded. Scales small, 39-55 scales in a longitudinal row and 19-25 scales in transverse row. Color of specimens before fixation: nuchal crest with transversely alternating reddish-brown and light greenish-brown areas; body light greenish brown reticulated with brown on upper anterior part and having iridescent bluish or greenish spots surrounded by reticulation; first dorsal fin with red upper margin, submarginal row of contiguous yellow spots, grayish-red band on middle part, greenish gray on lower part, and large blackish spot with blue spots between fifth spine and fin terminus; second dorsal fin red with two or three irregular longitudinal yellow stripes on middle part, and greenish gray on basal part; anal fin proximally red and distally dark gray; pectoral fin with a red area on ...
PROCESS FOR CONVERTING A CARBONACEOUS MATERIAL TO METHANE, METHANOL AND/OR DIMETHYL ETHER USING MICROCHANNEL PROCESS TECHNOLOGY...
0161]The catalyst may be supported on an assembly of one or more fins positioned within the process microchannels. Examples are illustrated in FIGS. 17-19. Referring to FIG. 17, fin assembly 290 includes fins 291 which are mounted on fin support 293 which overlies base wall 294 of process microchannel 295. The fins 291 project from the fin support 293 into the interior of the process microchannel 295. The fins 291 may extend to and contact the interior surface of upper wall 296 of process microchannel 295. Fin channels 297 between the fins 291 provide passage ways for reactant and product to flow through the process microchannel 295 parallel to its length. Each of the fins 291 has an exterior surface on each of its sides. The exterior surface provides a support base for the catalyst. The reactants may flow through the fin channels 297, contact the catalyst supported on the exterior surface of the fins 291, and react to form product. The fin assembly 290a illustrated in FIG. 18 is similar to the ...
Yellowtail blues napper
Distinctive Characters: Dorsal fin with 10 spines and 10 (rarely 11) rays. Anal fin with 3 spines and 8 (rarely 9) rays. Pectoral fin with 16 rays. Body depth 2.6-3.1 in standard length. Body moderately deep, fusiform. Large eyes. Interorbital space convex. Maxilla with or without scales. Dorsal and anal fins scaleless. Pectoral fins long, reaching level of anus. Caudal fin deeply forked ...
Petition · Ban the possession, distribution and sale of shark fins. · Change.org
Shark finning is the practice of cutting off a sharks dorsal fin so that people can use it for shark fin soup or other "delicacies". The sharks are often still alive while their fins are cut off with no regard to their pain. They are then tossed back into the ocean where, bleeding and in pain, they either suffocate from lack of mobility or are eaten by other sea predators.. Shark populations have been decimated by finning and many species are nearing extinction. Ecosystems are being upset by the lack of sharks in their waters and we are coming dangerously close to no longer having these beautiful creatures in continued decades.. We are calling for the Idaho State Senate to pass legislation that bans the sale, dsitribution, trade and possession of shark fins. The other West coast states have all passed legislation against shark fins, including Hawaii, Washington, Oregon and California. We want Idaho to join the West coast in becoming more compassionate, thoughtful and responsible in regards to ...
Governor signs shark fin ban - SFGate
The practice of cutting the fins off of living sharks and dumping them back in the ocean is not only cruel, but it harms the health of our oceans, Brown said. Researchers estimate that some shark populations have declined by more than 90 percent, portending grave threats to our environment and commercial fishing. Shark fins are used to make shark fin soup, an expensive Chinese delicacy that is popular at special events like weddings. [...] proponents argued that shark populations are being decimated by fishing because of the valuable fins, which sell for hundreds of dollars per pound.
Marine Drugs | Free Full-Text | Cyanobacterial Neurotoxin β-N-Methylamino-L-alanine (BMAA) in Shark Fins | HTML
Sharks are among the most threatened groups of marine species. Populations are declining globally to support the growing demand for shark fin soup. Sharks are known to bioaccumulate toxins that may pose health risks to consumers of shark products. The feeding habits of sharks are varied, including fish, mammals, crustaceans and plankton. The cyanobacterial neurotoxin β-N-methylamino-L-alanine (BMAA) has been detected in species of free-living marine cyanobacteria and may bioaccumulate in the marine food web. In this study, we sampled fin clips from seven different species of sharks in South Florida to survey the occurrence of BMAA using HPLC-FD and Triple Quadrupole LC/MS/MS methods. BMAA was detected in the fins of all species examined with concentrations ranging from 144 to 1836 ng/mg wet weight. Since BMAA has been linked to neurodegenerative diseases, these results may have important relevance to human health. We suggest that consumption of shark fins may increase the risk for human exposure to the
Batoid locomotion: effects of speed on pectoral fin deformation in the little skate, Leucoraja erinacea | Journal of...
Batoids (rays, skates, guitarfishes and sawfishes) are cartilaginous fishes characterized by dorso-ventrally flattened bodies, with expanded pectoral fins fused to the cranium that form a disc ranging in shape from round to rhomboidal (Aschliman et al., 2012; Franklin et al., 2014; Nakamura et al., 2015). Most rays and all skates use their pectoral fins to swim and can be placed into a continuum between undulatory and oscillatory, based on the number of kinematic waves present on the wing during steady locomotion (Rosenberger, 2001). Undulatory (or rajiform) locomotion is often observed in benthic species and is defined by having more than one propulsive wave present on the fin at one time, while oscillatory (or mobuliform) locomotion is most commonly observed in pelagic species and is defined by having less than a half wave present on the flapping pectoral fin disc (Rosenberger, 2001; Schaefer and Summers, 2005). The rajiform mode is specialized for efficient swimming at low speeds, because of ...
WildAid | Shark fin soup threatens to wipe out the world's oldest predator and damage consumer health
International conservation group WildAid and the Singapore Environment Council today launched a new report and public service campaign to raise the alarm that sharks continued to be slaughtered in vast numbers to supply shark fin soup. Analysis of trade data indicated that fins from between 40 to 70 million sharks are being used annually for soup.. There are currently 126 shark species (one third) classified as being at risk of extinction either critically endangered, endangered or vulnerable by the International Union for the Conservation of Nature. Nine more species were added in the last few months; the scalloped hammerhead, the common and big-eyed thresher, the short-fin mako, the silky, the smooth hammerhead, the dusky, the tiger and the bull shark.. The groups stated that while many people in Hong Kong, Singapore, Thailand and Taiwan had reduced eating it due to conservation, health and animal cruelty concerns the market was vast and growing due to Chinas economic boom. A recent survey ...
Petition · MUJI: Stop selling shark fin soup immediately! · Change.org
I am calling on MUJI JAPAN to stop selling shark fin soup immediately due to the critical endangering of global shark populations. I am also calling on MUJI UK, MUJI USA and MUJI TAIWAN to exert whatever influence they can over the company as a whole in order to stop its involvement with the rapid decline in shark numbers.. Please sign and share this petition on behalf of, not just sharks, but all marine life including other endangered fish and whales and dolphins, because success with this campaign would set a powerful positive precedent for future ocean conservation actions in Japan.. My country desperately needs to change its approach to life in the oceans before its too late.. Thank you.. 【MUJIs Position】. ...
Robbers nab wealth of shark fins - SFGate
driedfishmaw | Dried Fish Maw, Shark Fins, Sea Cucumber, Shrimp, Limpets, Abalone, Amber, Coral and cow gallstones.
Obama at restaurant that serves shark fin - UPI.com
Illinois Has No Room for Toxic Shark Fins
New species of Cyphocharax (Characiformes: Curimatidae) from the upper rio Negro, Amazon basin
Dorsal fin pointed, with distal margin straight and first and second branched rays longest. Pectoral-fin profile pointed. Tip of adpressed pectoral fin falls four or five scales short of vertical through pelvic-fin origin. Pelvic fin profile pointed. Tip of adpressed pelvic fin falls one or two scales short of anus. Caudal fin forked with tips of lobes somewhat pointed. Adipose fin well developed. Anal fin emarginate with first branched ray longest and about three times length of ultimate ray. Tip of adpressed anal fin falls five or six scales short of point of origin of ventral most caudal-fin ray.. Head profile anteriorly pointed overall from lateral view, but rounded in region of mouth and snout. Upper jaw very slightly longer than lower jaw with mouth slightly subterminal or jaws equal. Nostrils very close; anterior circular to ovoid, posterior crescent-shaped with aperture closed by thin flap of skin separating nostrils. Adipose eyelid well developed and extending posteriorly onto ...
Rayons mous dorsaux (Total): 5-6; Rayons mous anaux: 4. Metamorphosed females distinguished by the following characteristics: presence of vomerine teeth; short frontals, lying posterior to the ethmoid region, convex dorsal margin; extremely well developed sphenotic spines; small symphysial spine on lower jaw; hyomandibula with double head; extremely well developed quadrate spine, four to nearly six times longer than articular spine; deeply notched posterior margin of opercle; short and broad subopercle, dorsal end rounded, ventral end oval in shape; well developed second pharyngobranchial; caudal fin rays without internal pigmentation; illicium longer than length of esca bulb; pterygoiphore of illicium cylindrical throughout its length, emerging on snout from between frontal bones, anterior end slightly exposed, posterior end concealed beneath skin; well developed first ray of dorsal fin; dorsal fin rays 5-6; anal fin rays 4; long and narrow pectoral fin lobe, longer than longest rays of ...
Whatever Floats Yer Boat playlist for 04/06/2012 | WUSB 90.1 FM Stony Brook, NY
By John Schwedes. Each year tens of millions of sharks are brutally killed for their fins. The fins are used in an Asian delicacy, shark fin soup. The shark fin has no nutritional value, is tasteless since it cartilage and is cooked until it turns gelatinous. The sharks are caught and their fins are cut off the live shark and the still living shark is thrown back into the ocean to endure a slow painful death by starvation or drowning. Currently one third of all the pelagic shark species are on the endangered species list. There has been up to a 90% decrease in population in many of the 400 different species of sharks. Sharks are a vital part of a healthy marine ecosystem, sharks feed on the sick and weak, thereby keeping the schools of fish on which they feed healthy. Sharks being apex predators reproduce slowly and produce a just a few offspring making them especially vulnerable to this devastating assault on their population ...
"Inverse Dynamics-Based Fuzzy Logic Control of a Projectile Smart Fin" by Mohamed B. Trabia, Surya Kiran Parimi et al.
A smart fin for a subsonic projectile should be able to produce maneuvering force and moment that can control its rotation during flight. Piezoelectric actuator is an attractive alternative to usual hydraulic actuators due to its simplicity. The cantilever-shaped actuator can also be fully enclosed within the hollow fin. It has an end fixed to the rotation axle of the fin while the other end is pinned at the tip of the fin. A dynamic model of the system, including external moment due to aerodynamic effects, is obtained using the finite element approach. This paper presents a novel approach for automatically creating fuzzy logic controllers for the fin. This approach uses the inverse dynamics of the smart fin system to determine the ranges of the variables of the controllers. Simulation results show that the proposed controller can successfully drive smart fin under various operating conditions.
Captain Nemo Carbon Lite fins - WaterWayFins
Positional cloning of a temperature-sensitive mutant emmental reveals a role for sly1 during cell proliferation in zebrafish...
Here, we used classical genetics in zebrafish to identify temperature-sensitive mutants in caudal fin regeneration. Gross morphological, histological, and molecular analyses revealed that one of these strains, emmental (emm), failed to form a functional regeneration blastema. Inhibition of emm function by heat treatment during regenerative outgrowth rapidly blocked regeneration. This block was associated with reduced proliferation in the proximal blastema and expansion of the nonproliferative distal blastemal zone. Positional cloning revealed that the emm phenotype is caused by a mutation in the orthologue of yeast sly1, a gene product involved in protein trafficking. sly1 is upregulated in the newly formed blastema as well as during regenerative outgrowth. Thus, sly1 is essential for blastemal organization and proliferation during two stages of fin regeneration ...
Fins - D1 - VII, filamentous (?); D2 - 11; pectoral 16(15-17); anal- 10; caudal segmented 17; pelvic I,5 - 5th ray unbranched, fins seperate, frenum absent, extending to anus. Head - Maxilla extending to anterior of pupil; anterior nnostril erect tube; posterior nostril erect tube, shorter than anterior; interorbital wide greater than pupil diameter; no rostral frenum;. Papillae - A transverse pattern with three vertical rows anterior to row b; row 5i/6i continuous and at the anteriorof row b; row d divided into two sections.. Color - Generally mottled brownish; side of body with about 4-5 diffuse blackish, hourglassshaped bars, and black bar at base of caudal fin; a pair of creamy yellow bars below spinous dorsal fin; head with white spots, and diagonal brown bars radiating from eye; a small black spot at bottom of gill cover; median fins with white spots on rays, and white margin on both dorsal fins. (A&R 1994). Distribution - Pacific, Baja Calafornia Gulf of California (A&R 1994). Habitat - ...
Chlamydogobius ranunculus, Tadpole goby
Dorsal spines (total): 6 - 7; Dorsal soft rays (total): 6-8; Anal spines: 1; Anal soft rays: 5 - 7. Equal number of second dorsal and anal fin rays - consisting of 1 spine and 6 soft rays (Ref. 44894). Color: males blue-grey with dark scale margins and scattered black spots on head and body; first dorsal fin with broad yellow band across outer half; second dorsal and anal fins bluish on basal half, with a black stripe across center of fins and broad white margins; caudal fin dusky blue-grey with faint cross bands. Females mainly tan (Ref. 44894). ...
ZFIN Publication: Avaron et al., 2006
We have characterized two new members of the Hedgehog (Hh) family in zebrafish, ihha and dhh, encoding for orthologues of the tetrapod Indian Hedgehog (Ihh) and Desert Hedgehog (Dhh) genes, respectively. Comparison of ihha and Type X collagen (col10a1) expression during skeletal development show that ihha transcripts are located in hypertrophic chondrocytes of cartilaginous elements of the craniofacial and fin endoskeleton. Surprisingly, col10a1 expression was also detected in cells forming intramembranous bones of the head and in flat cells surrounding cartilaginous structures. The expression of col10a1 in both endochondral and intramembranous bones reflects an atypical composition of the extracellular matrix of the zebrafish craniofacial skeleton. In addition, during fin ray regeneration, both ihha and col10a1 are detected in scleroblasts, osteoblast-like cells secreting the matrix of the dermal bone fin ray. The presence of cartilage markers suggests that the dermal fin ray possesses an ...
What does it mean when goldfish put dorsal fin down - What s wrong with a goldfish when their dorsal fin is always down and...
Fish keep their dorsal fins clamped down when they are stressed. This can usually be rectified with up to 30% water change including gravel vacuuming. The ammonia level has probably risen to a dangerous level in the tank. Cut down on the amount of food given. Goldfish do not have a digestive system. Much waste is created. Less food is less waste ...
Patent US5790934 - Apparatus for photocatalytic fluid purification - Google Patents
A compact, efficient reactor for the photocatalyzed conversion of contaminants in a fluid stream. The reactor includes a photocatalyst disposed on a support structure with a light source in optical proximity to the support structure to activate the photocatalyst. In one embodiment of the invention, the support structure includes multiple non-intersecting fins oriented parallel to the general flow direction of the fluid stream to provide a reactor with low pressure drop and adequate mass transfer of the contaminant to the photocatalyst disposed on the surface of the fins. The light source includes one or more lamps that may penetrate the fins to provide efficient illumination of the photocatalyst. The fins may be flat or pleated. In an alternative embodiment, the fins are pleated and composed of a porous material. These fins are oriented so that the fluid stream flows through the fins. In another embodiment, the support structure includes one or more cylinders having pleated inner surfaces with
California Considers Shark's Fin Ban; Controversy Ensues | POPSUGAR Food
Nietzsche Y El Fin De La Religion (Spanish Edition) 1985
A CAMPAGNE 2019 Nietzsche unemployment; LECTION DES BOURSIER-IÈ RE-S EST MAINTENANT CLOTURÉ E. LA PROCHAINE CAMPAGNE DEVRAIT NORMALEMENT ETRE LANCÉ E À LA FIN AOÜ time 2019. MERCI DE VOTRE INTÉ RÊ T. LA PROCHAINE CAMPAGNE DEVRAIT NORMALEMENT ETRE LANCÉ E À LA FIN AOÜ Nietzsche y el Fin de la Religion 2019. MERCI DE VOTRE; INTÉ RÊ T. Le Nietzsche y el Fin 8K stage; gender; journal suspendu au Burundi en 2018-2019 et question, jusqu universality; nouvel ordre.
fin536 ex 2 - Fin536 Exercises 2 Ch4 Balance of Payments 1(Argentina's Balance of Payments Listed below is Argentinas BOP...
The body shape of Synodontis polli is described as being compressed. The head is also described as being compressed and the body is described as being naked. The mouth is described as being inferior with wide lips (from the original description of Synodontis eurystomus which means wide mouth). It is documented that this catfish has 40-70 mandibular teeth which are described as being short, uncuspid and arranged in 6-8 short transverse rows. It has three pairs of barbels which are described as being short, with the maxillary barbels having a small membrane at the base. The mandibular barbels have slender ramifications. Synodontis polli is described as having a cusp on the dorsal edge of the humeral process. The dorsal fin is described as having 7 soft rays. The pectoral fin is described as having 8-9 soft rays. The caudal fin is described as being forked with rounded lobes. ...
The Effect of 17b-Estradiol on the Development of Modified Hemal Spines in Early-Life Stage Gambusia holbrooki
The morphologic development of the gonopodium of male mosquitofish, Gambusia holbrooki, is essential for proper reproductive function and has previously been used as a biomarker for the presence of endocrine-disrupting chemicals (EDCs) in freshwater systems. The development of the gonopodium is accompanied by the modification of the hemal spines on the 14th, 15th, and 16th vertebrae. These form an anchor for the movement of the gonopodium, and their normal development is therefore critical. This development is under hormonal control. It has been hypothesized that the modification of the hemal spines may be used as an end point for understanding the effects of exposure of early-life stage fish to EDCs and to add to the understanding of the differential sensitivities of different life stages. Larval fish were exposed to concentrations (0, 20, 100, and 500 ng/L) of 17b-estradiol (E2) in two experiments using a flow-through system for 8 and 12 weeks. There was a general delay in the development of ...
Summer Sun Exposure Quiz - Health Encyclopedia - University of Rochester Medical Center
Ultraviolet rays are an invisible form of radiation streaming from the sun. There are three ranges of UV ray lengths: UVA, UVB, and UVC. UVA is the most abundant; this form can penetrate past the top layer of skin. Researchers believe that UVA can damage the bodys connective tissue, boosting a persons risk for developing skin cancer. Much of the UVB rays are absorbed by the ozone layer in the earths atmosphere. The UVB rays that do reach your skin can be damaging, even though they dont penetrate as deeply as UVA. UVC is very hazardous to the skin, but fortunately, all of these rays are absorbed by the ozone layer ...
Bioinformatics Centre, National Institute of Oceanography, Goa, India
Body elongate and subcylindrical, its depth 4.1 to 5.2 times in standard length; belly rounded, abdominal scutes present but with very poorly developed keel so that belly feels smooth, usually 17 pre-pelvic and 13 to 15 post-pelvic scutes. Pseudobranch short, flat; gillrakers 29 to 42 on lower arm of first arch. Maxilla reaching vertical from anterior margin of eye. Dorsal fin with 14 or 15 branched rays, its origin slightly before midpoint of body. Anal fin with 15 to 17 branched rays, its origin far behind dorsal fin. Pelvic fin with 8 rays, its origin below anterior part of dorsal fin. Scales cycloid, thin, deciduous; predorsal median ridge covered by a single longitudinal series of scales ...
Cardinal Tetra (Paracheirodon axelrodi) - The Free Freshwater and Saltwater Aquarium Encyclopedia Anyone Can Edit - The...
The fins have no colour and the upper-side is a brownish-red. A wide single stripe extends along each side of the fish from the upper parts of the eye to just below the Adipose fin. This stripe can appear sea-green, yellow-green or turquoise-blue, depending on the angle that the light hits it. Below this stripe is a wide bright Red band that can be seen on the lower half of the body , running from the underside of the mouth including the throat, and all the way back to the base of the Caudal fin. This fish is often confused with the Neon tetra, but in the Neon the bright red band is shorter, only running to the middle of the body ...
ARCA: ORG- Artigos
Our group focuses on the study of the cellular and molecular mechanisms controlling limb development and fin regeneration. We are trying to understand how the main signalling centre in limb development, the Apical Ectodermal Ridge (AER), is established and maintained through development and how different molecules, namely those related to stemness, are involved in these processes. Also, we have developed a line of research directed to depict how ion dynamics can control limb development, digit differentiation and fin regeneration. In these studies we use the chicken and zebrafish embryos as well as adult zebrafish as animal models.. ...
Direct and social genetic parameters for growth and fin damage traits in Atlantic cod (Gadus morhua) | Genetics Selection...
In this study, we estimated genetic parameters for direct and social genetic effects for growth traits and fin damage traits in Atlantic cod. To our knowledge, this is the first study that investigates the SGE of traits directly related to welfare in aquaculture species. The estimated ratio of total heritable variance over phenotypic variance (T2) was significantly greater than 1 for some of the fin damage traits, although the estimates had large standard errors. This means that we documented strongly significant SGE for fin damage traits but that the experiment was not large enough to accurately quantify the total heritable variance, although the experimental design was based on the simulation study by Ødegård and Olesen . They showed that, over an average of 50 replicates, this design would provide accurate breeding values and estimates of direct and social genetic variance components. In addition, Ødegård and Olesen  did not fit the family effect (the effect due to common rearing ...
Fins for photographers - Unrequited Gear Lust and DIY Projects - Wetpixel :: Underwater Photography Forums
Page 1 of 6 - Fins for photographers - posted in Unrequited Gear Lust and DIY Projects: There does not seem to be a forum about scuba gear in general, but Im sure this group has opinions about this kind of stuff too. Not all gear is good for all uses, so Id like to get an underwater photographers point of view. Does anyone here really love their fins? If so, let me know why. Ive had the same pair of fins for the past 11 years (honestly) and they have finally worn ou...
Peeling Found in Flight 587's Tail Fin - latimes
Johnstons topminnow, Micropanchax johnstoni, is a small (60 mm or 2.3 inches), killifish-like denizen of near-surface waters in Lake Malawis lakeshore swamps. (A photograph of live individuals by Diane Brown is available at Killi.net here.) It was long known as Aplocheilichthys johnstoni but Micropanchax is now its correct genus. Males attain a larger size than females. Jubb (1967) describes the coloration as "iridescent olive-green with lemon coloured fins and belly. In some specimens the dorsal and caudal fins are edged with black." It occurs throughout "...the warm waters of the whole Zambezi River system, and southwards to the lowveld areas of the Pungwe, Buzi, Sabi, Lundi, and Limpopo rivers" (Jubb, 1967). M. johnstoni is one of two species of Micropanchax now known from the environs of Lake Malawi; the other one, M. katangae, has a distinct black stripe extending from the snout to the caudal fin base. Jackson (1961: 557) remarked that M. johnstoni had not been seen in Lake Malawi since ...
A Hand, a Fin, a Gene - Science Friday
IRA FLATOW: This is Science Friday. Im Ira Flatow. Have you ever looked at your hand or you five fingers and thought that it must be an evolutionary descendant of all those long tiny bones at the end of a fishs pectoral fins? Up til now, many scientists have said, no, the bones even formed through different processes during development. Cant be the same thing. But new research from the University of Chicago says, actually, there may be an evolutionary link, after all.. Here to explain it Dr. Kim Cooper, Assistant Professor of Biological Sciences, University of California San Diego. She looks at the evolution and development of bones in other animals and wrote a commentary about the research. In Chicago, Kimberly Cooper, welcome to Science Friday.. DR. KIM COOPER: Hello, Ira.. IRA FLATOW: Hey, there. Well, lets go back a little bit and talk about what we used to think. Why wouldnt fins and hands be related? You know, you look at them and they look like, hey, they should be related.. DR. KIM ...
Zebra fish fins help Oregon researchers gain insight into bone regeneration - Healthcanal.com : Healthcanal.com
In a paper placed online in advance of print in the Feb. 13 issue of the journal Cell Reports, the UO team shows that two molecular pathways work in concert to allow adult zebra fish to perfectly replace bones lost upon fin amputation.. One pathway resets existing bone cells to a developmental stem cell-like state and then supports their growth to replace lost cells. The second directs the newly formed cells to turn back into functional, organized bone. Using genetic, cellular and molecular approaches, the authors detailed how the opposing pathways cross-communicate to keep the regenerative process in balance.. Unlike humans, some vertebrates, including zebra fish, have amazing innate abilities to regenerate lost appendages and organs, said co-author Kryn Stankunas, a professor of biology and member of the UO Institute of Molecular Biology.. According to the authors, a mysterious process triggers residual cells to revert to a less developed state upon tissue damage, a process known as ...
Template talk:Mammal hybrids
Fin/blue whale hybrids. Shouldn't a page be created about the now known fin/blue whale hybrids? -Preceding unsigned ... Expand to animals?. 'Mammal hybrids' implies only mammals can be hybrids. Any issue with renaming template to Animal ... hybrids expanding to include other animals? Regards, Sun Creator(talk) 15:38, 11 October 2019 (UTC) ...
Visible opaque animal needs better picture). Fins are separated, rounded, and completely rayed. Anterior fins beginning below ... Seminal vesicles conical in shape, either exactly next to or very close to the tail fin, separated from posterior fins. For ... Sagitta elegans). Body of adult animal is narrow, firm and opaque (this image: animal very see-through. ... Horizontal fins bordering the trunk serve largely as stabilizers, and are used in flotation rather than in active swimming. ...
List of whale vocalizations
ISBN 0-12-588441-9. Fox, David (2001). "Balaenoptera physalus (fin whale)". Animal Diversity Web. Retrieved 2006-10-22. " ... Like other whales, the male fin whale has been observed to make long, loud, low-frequency sounds. Most sounds are frequency- ... As with other dolphins, orcas are very vocal animals. They produce a variety of clicks and whistles that are used for ...
The animal possesses 9 dorsal fin rays. Its first unbranched ray is half of the length of its second ray. The distal margin of ... The adipose fin is located at the insertion of the last anal fin ray. Anal-fin rays range in number between 16-18. The distal ... Its pectoral fin rays range between 11-13, while its pelvic fin rays equals 7. The tip of the pelvic fin reaches a posterior ... Over the middle of its caudal fin rays there is a slight dark pigmentation. The animal counts with a single small humeral spot ...
The animal possesses 9 dorsal fin rays. Its first unbranched ray is half of the length of its second ray. The distal margin of ... The adipose fin is located at the insertion of the base of the last anal fin ray. Anal-fin rays range in number between 15-17. ... Its pectoral fin rays range between 11-13, while its pelvic fin rays equals 7. The tip of the pelvic fin reaches a posterior ... The caudal fin finds itself forked, with lobes of equal size and possessing 19 principal rays. A. microschemos has 9 to 11 ...
Tradeoffs for locomotion in air and water
1991) On a Fin and a Prayer. "Scholars." 3(1), 4-7. Alexander, R. McNeill (2003) Principles of Animal Locomotion. Princeton ... Many fish swim using combined behavior of their two pectoral fins or both their anal and dorsal fins. Different types of Median ... Median-Paired Fin (MPF) and Body-Caudal Fin (BCF). Within each of these classifications, there are numerous specifications ... undulations of a long dorsal fin while the body axis is held straight and stable Gymnotiform: undulations of a long anal fin, ...
Wild Life (Pupil album)
The shark has a pair of dorsal fins and pectoral fins. Juveniles' tails have a larger upper fin than lower fin, while the adult ... Animals, Animal Pictures, Wild Animal Facts. Whale Shark Photograph-identification Library Whale Shark And Oceanic Research ... The whale shark is the largest non-cetacean animal in the world. The average size of adult whale sharks is estimated at 9.7 m ( ... Feeding occurs either by ram filtration, in which the animal opens its mouth and swims forward, pushing water and food into the ...
The animal is developing features which will eventually allow animals to exploit land. Tiktaalik roseae is the only species ... The fin was clearly weight bearing, being attached to a massive shoulder with expanded scapular and coracoid elements and ... In 2014, the discovery of the animal's pelvic girdle was announced; it was strongly built, indicating the animal could have ... It and similar animals may possibly be the common ancestors of the broad swath of all vertebrate terrestrial fauna: amphibians ...
They have a triangular shaped dorsal fin. Temnodontosaurus have the largest eyes of any ichthyosaur, and of any animal measured ... There are two notches on the fin's anterior margin. The paired fins were used to steer and stabilize them while swimming ... The fins have strong hyperphalangy. This is unlike other post Triassic Ichthyosaurs like Thunnosauria which has forefins are at ... Their eyes are thought to be the largest of any animal ever known. Temnodontosaurus eyes were approximately 20 cm (8 in) in ...
No fin was present on the top of the animal. The tail was long and pointed, and measured around 5 feet (1.5 m) in length. There ... "Gambo" is the name given to a carcass of an unidentified large marine animal that was reportedly washed up on Bungalow Beach in ... Chris Orrick proposed that it was a severely mangled Shepherd's Beaked Whale that was twisted so that the dorsal fin and ...
Vertebrate land invasion
Essentially, it is a fin that can support the animal. Similarly, it also has a neck that allows independent head movement from ... It has a fin, but interestingly the fin has bones within it that are similar to mammalian tetrapods. It has an upper arm bone, ... In contrast, land animals use necks to move their heads so they can look down to see the food on the ground. The greater the ... Their tail fins became smaller. They lost the lateral line system, a network of canals along the skull and jaw that are ...
Smooth butterfly ray
"Gymnuridae (Butterfly rays)". Animal Diversity Web. Retrieved 2016-03-14. Rosenberger, Lisa (2001). "Pectoral fin locomotion in ... The caudal fin is never present and a variable number of tubercles can be found on larger specimens. The smooth butterfly rays ... These are broad diamond-shaped rays with a short tail that has low dorsal and ventral fin folds. The tail has 3 to 4 dark lines ... They use a structure called the lateral line canal; it is located on the dorsal side from the head to the pectoral fins, and ...
A comparative study by Motani in 2002 concluded that, in extant animals, small tail fin lobes positively correlate with a high ... All of these animals were streamlined, dolphin-like forms, although the more basal animals were perhaps more elongated than the ... Some species had a fin on their backs and a more or less vertical fin at the rear of a rather short tail. Although ichthyosaurs ... The Mixosauria were already very fish-like with a pointed skull, a shorter trunk, a more vertical tail fin, a dorsal fin, and ...
Comparison of Islamic and Jewish dietary laws
Many animals permitted in kashrut are also halal, such as bovines. To be kosher, aquatic animals must have scales and fins. ... This is similar to the Jewish law with the exception of fins. Gelatin is only permissible if it comes from a permissible animal ... Dhabihah is the method used to slaughter an animal in Islamic tradition. Shechita requires that an animal be conscious and this ... Thus some animals such as the camel are halal, but not kosher. Kashrut requires strict separation of dairy and meat products, ...
List of traditional Chinese medicines
Traditional Chinese Medicine and Endangered Animals, Encyclopædia Britannica Advocacy for Animals. "Seahorse Crusader Amanda ... Shark fin soup is traditionally regarded as beneficial for health in East Asia, and its status as an elite dish has led to huge ... "Shark Fin Soup: An Eco-Catastrophe?". Sfgate.com. 2003-01-20. Retrieved 2009-12-07. An Effective Supplemental Therapy for ... In the classic Handbook of Traditional Drugs from 1941, 517 drugs were listed - 442 were plant parts, 45 were animal parts, and ...
Thomas Brown (philosopher)
Some animals obtained wings, others fins, and others swiftness of foot; while the vegetables exerted themselves, in inventing ... not by the animal, to which they accresce, but by the great fource of animal existence. The immense beds of limestone, chalk, ... It is contrary, however, to all the observations, which prove the processes of animal, and vegetable growth, to be the result ... The parts accreted, existing before their junction with the animal, must have formed a portion of the original matter of the ...
They are generally a silver colour, with pale green to hyaline fins. A. indica is the largest of the genus, growing to a ... Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology. 364: 560. Archived ... Juveniles are occasionally used in saltwater aquariums, noted for their filamentous anal and dorsal fins. ... with the main difference being the profile of the head and the characteristic long filamentous anal and dorsal fins displayed ...
Evolution of fish
The first animals to venture onto dry land were arthropods. Some fish had lungs and strong, bony fins and could crawl onto the ... Their fins are fleshy, lobed, paired fins, joined to the body by a single bone. The fins of lobe-finned fish differ from those ... Two types of Early Cambrian animal apparently having fins, vertebrate musculature, and gills are known from the early Cambrian ... The fins evolved into the legs of the first tetrapod land vertebrates, amphibians. They also possess two dorsal fins with ...
Role of skin in locomotion
This fiber arrangement is seen in the mantle of squid and the fins in sharks. The skin of these animal that use undulatory ... Foundations of animal hydraulics: Geodesic fibres control the shape of soft bodied animals. J Exp Biol, 211(3):289-291, ... However, the structure of the skin has evolved to aid animals in their different modes of locomotion. Soft bodied animals such ... Animals that are soft bodied are constrained by the geometry and form of their bodies. However it is the geometry and form of ...
Stellwagen Bank National Marine Sanctuary
Some such fish are the Atlantic cod, silver hake, yellow-tail flounder, blue-fin and yellow-fin tuna, striped bass, blue fish ... Possibly the most famous animals on Stellwagen Bank are the mammals. Five species of seals (harp seal, gray seal, harbor seal, ... Whale watchers can frequently see humpback whales, minke whales and fin whales. There are occasional sightings of one of the ... Over 130 species from numerous classes of the animal kingdom call the bank home at least temporarily. ...
The fins of the breeding male become more red in color, whereas the male F. kansae develops a more yellow-orange fin color. ... This species feeds on chironomid larvae, copepods, nematodes, and other small animals. It is also herbivorous. It may feed by ... Also, the parasite Gyrodactylus stableri infests the fins and organisms of Neascus, a genus of flukes, infest the eye and ... The breeding male develops bright orange coloration on most of his fins. ...
ஆனைக்கொய்யா - தமிழ் விக்கிப்பீடியா
Amphibian - Simple English Wikipedia, the free encyclopedia
Amphibians are predatory animals. They mostly eat live invertebrates and animals that do not move too quickly. These include ... They could also use their strong fins to hoist themselves out of the water and onto dry land if necessary. ... Fish and other animals eat most of their eggs. Male midwife toads carry their eggs on their backs. When they are ready to hatch ... They will swallow the animal whole, but may chew it just a bit for it to go down their throats. The Ranidae family and the ...
Displays are often reinforced by stretching out the animal's arms, fins or web to make it look as big and threatening as ... World Animal Foundation. Retrieved 12 April 2017.. *^ Simon, Matt (16 January 2015). "Absurd Creature of the Week: The ... Journal of Applied Animal Welfare Science. Lawrence Erlbaum Associates. 7 (2): 95-106. doi:10.1207/s15327604jaws0702_2. PMID ... Captive animals have been found to be more susceptible to pathogens than wild ones. A gram-negative bacterium, Vibrio ...
Fish stock (food)
These animals rely on their well-developed flippers and tail fin to propel themselves through the water; they swim by moving ... These animals rely on their well-developed flippers and tail fin to propel themselves through the water; they swim by moving ... International Fund for Animal Welfare. Retrieved 29 August 2015.. *. Viegas, Jennifer (23 February 2010). "Thousands Mourn Dead ... These animals have very large heads, which can make up as much as 40% of their body mass, and much of the head is the mouth. ...
Bioinformática, a enciclopedia libre
List of largest mammals
a b c d e f g h i Wood, Gerald The Guinness Book of Animal Facts and Feats (1983) ISBN 978-0-85112-235-9 ... the fin whale (Balaenoptera physalus), which can reach a size of 27 m (89 ft) in length and weight of 109 tonnes, and the ... Animal Diversity Web *^ "Archived copy". Archived from the original on 2018-12-10. Retrieved 2018-12-10.. CS1 maint: Archived ... The Animal Files *^ Wroe, S.; Myers, T. J.; Wells, R. T.; Gillespie, A. (1999). "Estimating the weight of the Pleistocene ...
Toxoplasma gondii - Viquipèdia, l'enciclopèdia lliure
Poden sobreviure fins a tres setmanes a 1-4°C. S'ha observat in vitro i in vivo que l'extret de taquizoïts té propietats ... Tenter AM, Heckeroth AR, Weiss LM «Toxoplasma gondii: from animals to humans» (en anglès). Int J Parasitol, 2000 Nov; 30 (12-13 ... El bradizoït (del prefix grec bradýs=lent i del sufix zōo=animal) és la forma de replicació lenta del paràsit. No solament de ... El T. gondii es propaga dins d'aquests vacúols per una sèrie de divisions binàries fins que la cèl·lula infestada eventualment ...
They were probably relatively good swimmers, possessing dorsal fins, paired pectoral fins, and a strong tail. The shield of ... 1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 24. ISBN 978-1 ... This is due to the development of paired fins, and their complicated cranial anatomy. The osteostracans were more similar to ... Several synapomorphies support this hypothesis, such as the presence of: sclerotic ossicles, paired pectoral fins, a dermal ...
Umiditat - Wikipèdia
Uberon, a enciclopedia libre
After filtrating the microbial culture of the Corynebacterium diphtheriae and injecting it into the lab animals, they were able ... "Scientific elites and laboratory organization in fin de siècle Paris and Berlin: The Institut Pasteur and Robert Koch's ... The search for a stronger remedy against this disease was made more difficult because most animals are immune to it: it was ... In 1985, the first human vaccine obtained by genetic engineering from animal cells, the vaccine against hepatitis B, was ...
Anatomical terms of location
For example, in a fish, the pectoral fins are dorsal to the anal fin, but ventral to the dorsal fin. ... Specific animals and other organisms. Different terms are used because of different body plans in animals, whether ... For example, it is very confusing to say the dorsal fin of a dolphin is "right of" the left pectoral fin, but is "left of" the ... Additionally, for some animals such as invertebrates, some terms may not have any meaning at all; for example, an animal that ...
Ós del Tibet - Viquipèdia, l'enciclopèdia lliure
Creix fins a assolir entre 130 i 190 cm de llargària.. *Els mascles pesen entre 100 i 218 kg i les femelles entre 50 i 125 kg.[ ... Animal Diversity Web (anglès) *↑ islav Mazak: Der Tiger. Nachdruck der 3. Auflage von 1983. Westarp Wissenschaften ... Habita zones amb elevacions de fins als 4.700 m d'altitud, però el més freqüent és que habiti zones de menor alçada. En algunes ... fins i tot en major risc. Els crítics però, afirmen que la pràctica és evidentment un acte cruel i inhumà, i que la bilis d'ós ...
Beta-amiloide, a enciclopedia libre
Symbiodinium, a enciclopedia libre
Wikipedia® é unha marca rexistrada da Wikimedia Foundation, Inc., unha organización sen fins lucrativos. ... o que ten como resultado unha rápida perda da pigmentación marrón do animal. Moitas asociacións Symbiodinium-cnidarios vense ... é incapaz de establecer endosimbiose aínda que existe en ambientes arredor do animal ou asociado estreitamente con outros ... o cultivo resultante coa identidade do simbionte dominante e relevante ecoloxicamente que albergaba orixinalmente o animal. ...
Samples from these animals shows contamination within their tissue. Conservation. The Risso's dolphin populations of ... Risso's dolphin has a relatively large anterior body and dorsal fin, while the posterior tapers to a relatively narrow tail. ... In older calves, the nonwhite areas darken to nearly black, and then lighten (except for the always dark dorsal fin). Linear ... Risso's dolphin is named after Antoine Risso, whose description formed the basis of the first public description of the animal ...
The large pectoral fins are banded. The first dorsal fin is made of slender and somewhat soft spines, and just barely joins ... Animal Behavior 28:728-734. *^ Savage, T. 1963. Reproductive behavior of the mottled sculpin, Cottus bairdi Girard. Copeia 1963 ... fanning the eggs with his pectoral fins. ...
SIDA, a enciclopedia libre
Killer whale - Simple English Wikipedia, the free encyclopedia
The dorsal fin[change , change source]. The dorsal fin of the orca can extend up to six feet above its body. That's taller than ... "Global Animal. Retrieved January 27, 2016.. *↑ Killer whale attacks unsuspecting girl. *↑ SeaWorld trainer killed by killer ... In captivity, dorsal fins often collapse for many reasons, but in the wild, dorsal fin collapse happens in less than one ... And because a killer whale swims close to the surface, the dorsal fin can often be seen gliding through the surface of the ...
... due to their reputation as dangerous animals. The giant anteater remains widespread. Some populations are stable and the animal ... Hall, B. K. (2007). Fins Into Limbs: Evolution, Development, And Transformation. University of Chicago Press. p. 304. ISBN 0- ... The animal's thick, leathery hide is used to make equestrian equipment in the Chaco. In Venezuela, it is hunted for its claws.[ ... The animal sleeps curled up with its bushy tail folded over its body. The tail serves both to conserve body heat and as ...
a b Ross Piper (2007), Extraordinary Animals: An Encyclopedia of Curious and Unusual Animals, Greenwood Press. ... Species of genus Exocoetus have one pair of fins and streamlined bodies to optimize for speed, while Cypselurus spp. have ... they fold their pectoral fins to re-enter the sea, or drop their tails into the water to push against the water to lift for ... self-propelled leaps out of the water where their long wing-like fins enable gliding for considerable distances above the ...
New wave of British heavy metal
Protostomia - Wikipèdia
ఇంగ్లీషు-తెలుగు నిఘంటువు (D) - వికీపీడియా
... is noted for being the site of evolutionary radiations among several groups of animals, most notably cichlid fish.[ ... which aid in egg fertilisation in a manner comparable to the egg-spots on the anal fin of haplochromines. ... and often both sexes are brightly colored with males having egg-shaped yellow spots on their anal fin (a feature particularly ...
Fin - Wikipedia
Often the tail fin is used, but some aquatic animals generate thrust from pectoral fins. Fins can also generate thrust if they ... Engineering fins are also used as heat transfer fins to regulate temperature in heat sinks or fin radiators. Fins can regulate ... Surfboard fin Aquatic locomotion Fin and flipper locomotion Fin (submarine) Fish locomotion Robot locomotion RoboTuna Fin ... Foil shaped fins generate thrust when moved, the lift of the fin sets water or air in motion and pushes the fin in the opposite ...
Bioelectric signaling regulates size in zebrafish fins
... relationship between the size of an appendage or organ and that of the body as a whole is tightly regulated during animal ... relationship between the size of an appendage or organ and that of the body as a whole is tightly regulated during animal ... Bioelectric signaling regulates size in zebrafish fins PLoS Genet. 2014 Jan;10(1):e1004080. doi: 10.1371/journal.pgen.1004080. ... The zebrafish another longfin (alf) mutant shows allometric growth resulting in proportionally enlarged fins and barbels. We ...
Video) Study Shows Link Between Neurotoxins in Shark Fins and Brain Diseases | RSMAS Blog
... a practice where by shark fins are removed at sea and the rest of the mutilated animal is thrown back in the water to die," ... They are primarily killed for their fins alone, to fuel the growing demand for shark fin soup, which is an Asia delicacy. A new ... Will this effect the demand for shark fin soup and other shark fin products worldwide? Comment below with your thoughts. ... "Estimates suggest that fins from as many as 70 million sharks end up in soup. As a result, many shark species are on the road ...
Dorsal fin - Wikipedia
Some animals have developed dorsal fins with protective functions, such as spines or venom. For example, both the spiny dogfish ... The sunfish uses the dorsal fin (and the anal fin) for propulsion. In anglerfish, the anterior of the dorsal fin is modified ... A dorsal fin is a fin located on the back of most marine and freshwater vertebrates such as fishes, cetaceans (whales, dolphins ... The main purpose of the dorsal fin is to stabilize the animal against rolling and to assist in sudden turns. Some species have ...
Tiktaalik roseae: Q&A Session with Neil Shubin
It is a fin that is able to support the animal. That goes together with other features that the animal has. It has a neck that ... It has, inside its fins, a wrist and finger-like structures like a limbed-animal. It has a flat head, like a limbed-animal, an ... There are even scales on the fin. But the other thing that is very fish-like is that it has a fin. There is the fin. See these ... So it has scales and fins like a fish. Now, like land-living animals, it has a few things that are quite different. A flat head ...
Has China lost its taste for shark fin? - latimes
California passed its ban on shark fins last year despite the protests that shark-fin soup was a traditional delicacy among ... Shark finning is a particularly wasteful and cruel practice: after the fins are cut off the shark, the animal is thrown back ... California passed its ban on shark fins last year despite the protests that shark-fin soup was a traditional delicacy among ... Shark fins sell for a bundle, but shark meat is much less valuable; its not worth it for finning operations to haul the entire ...
shark fin trade Archives - Saltwater Life
in the journal Animal Conservation which has the potential to revolutionize our understanding of global shark trade dynamics ... Samples of fin trimmings (smaller, cheaper off-cuts from the fin trade) were taken from an unknown mixture of shark populations ... I have written before about the origins of shark fin soup, however it is worth re-capping slightly: The cartilage in the fins ... bringing back fins that fishermen had discarded. From this point onwards shark fin soup became an established dish and by the ...
Mesodermal origin of median fin mesenchyme and tail muscle in amphibian larvae. | Sigma-Aldrich
Here we present evidence that fin mesenchyme and striated tail muscle in both animals are derived solely from mesoderm and not ... Mesodermal origin of median fin mesenchyme and tail muscle in amphibian larvae.. [Yuka Taniguchi, Thomas Kurth, Daniel ... we traced the origins of fin mesenchyme and tail muscle in amphibians. ...
Dorsal fin | animal appendage | Britannica
... almost all cetaceans possess a dorsal fin that serves as a keel. The dorsal fin and flukes are composed of connective tissue, ... Other articles where Dorsal fin is discussed: cetacean: Locomotor adaptations: … ... almost all cetaceans possess a dorsal fin that serves as a keel. The dorsal fin and flukes are composed of connective tissue, ... The dorsal fin of older males is very tall (up to 1.8 metres [5.9 feet]) and straight; females and young males have a dorsal ...
Researchers find the ancient genetic link between fish fins and animal hands - The Washington Post
Activity in the genetic switches that develop gar fish fins and mice hands are nearly indistinguishable, the studys lead ... That extinct animal actually had large, strong and mobile hind fins and an enlarged pelvis, suggesting that limbs in the front ... Researchers find the ancient genetic link between fish fins and animal hands. ... That went against the "front-wheel-drive" hypothesis that held limbs first evolved from front fins, while back fins stayed ...
Fish Market Stock Photo & More Pictures of Animal Fin | iStock
Art Exhibit: Paws, Claws, Hooves, and Fins - Animals in Art - Visit Orange County, NY
Nine cell types to re-grow a fin | Understanding Animal Research | Understanding Animal Research
Understanding Animal Research , News , Research & medical benefits , Nine cell types to re-grow a fin ... If zebrafish lose a fin a special group of cells form on the stump. These cells regrow the new fin and it was assumed they were ... In fact, different cell-types that are already present on the stump work together to re-grow a limb - in this case a fin. This ... We cover all aspects of animal research with snapshots of biomedical advances from scientific journals, staff blogs and video ...
Fins, Feathers and Fur: The Healing Power of Animals - Camp Widow
Fins, Feathers and Fur: The Healing Power of Animals. Speaker(s): Susan Hannifin-MacNab ... with fins, feathers or fur- animals are natural healing resources. Human physiology is positively altered in the presence of ... We will discuss ways to integrate animals into our lives AND get some much-needed puppy love from the team of highly trained ... Interacting with animals promotes healing by • decreasing feelings of loneliness and isolation • relieving symptoms of anxiety ...
Parrot Head 'Fins Up!' Sport Lotion, SPF 30 (old formulation) (2013 Formulation) || Skin Deep® Cosmetics Database | EWG
Animal Testing Policies. Unknown. Leading international certifiers PETA and Leaping Bunny have no information concerning this ... Parrot Head Fins Up! Sport Lotion, SPF 30 (old formulation) (2013 Formulation). See all: Parrot Head ... EWG scientists reviewed Parrot Head Fins Up! Sport Lotion, SPF 30 (old formulation) (2013 Formulation) for safety according ... EWGs rating for Parrot Head Fins Up! Sport Lotion, SPF 30 (old formulation) (2013 Formulation) is 3. ...
In vivo quantification of mechanical properties of caudal fins in adult zebrafish | Journal of Experimental Biology
Animal procedures. Wild-type AB (Oregon) zebrafish, Danio rerio (F. Hamilton 1822), aged 6-12 months were used in this study. ... Elasticity measurements for caudal fins. (A-C) Data for intact fins; (D-F) data for disrupted fins. (A,D) Force-deflection ... We measured the bending stiffness of caudal fins in vivo by applying a mechanical line force load (Fig. 1A) to deflect the fin ... Histological staining of fin sections. Fins were fixed in 4% paraformaldehyde in PBS, dehydrated, and embedded in tissue ...
Cardiovascular design in fin whales: high-stiffness arteries protect against adverse pressure gradients at depth | Journal of...
Animals. Arteries were collected from fresh fin whale carcasses as part of a commercial whaling operation at Hvalfjörður, ... Morphology used in modelling the diving response of the thorax of an 18 m fin whale. (A) Composite image of a 9 m female fin ... Unlike terrestrial mammals, diving fin whales may lack precise control of arterial transmural pressures. The fin whale arterial ... bronchi and bony nasal canals in a fin whale as 6.5% of TLC from which alveolar lung collapse in a fin whale diving at TLC is ...
Britain to Support Ban on Blue Fin Tuna | TreeHugger
... and then France supported the ban on blue fin tuna and now the Brits are joining the campaign to save the endangered fish. The ... This man has saved 12 endangered animal species from extinction This is how you do it: 4 elephant poachers convicted in Congo ... Britain to Support Ban on Blue Fin Tuna. First Monaco, and then France supported the ban on blue fin tuna and now the Brits ... First Monaco, and then France supported the ban on blue fin tuna and now the Brits are joining the campaign to save the ...
California Governor Signs Shark Fin Ban Into Law | TreeHugger
... trade and possession of shark fins. The hope is that by hitting the market from the ... 14 pink animals to celebrate St. Valentine African grey parrots surprise researchers with their altruism ... Californias Proposed Shark Fin Ban Divides Chinese-American Community. What Is Shark Fin Soup and Why Should it Be Banned in ... California Moves Closer to Banning Shark Fins, But The Debate Rages Ban on Selling Shark Fins Passes California Assembly. ...
From fins to limbs: Unravelling the mystery of evolutionary morphology | Taking your first step as a researcher | Prospective...
Forelimbs and hindlimbs of animals evolved from pectoral and pelvic fins of ancestral fish. Cartilaginous fish such as sharks ... It was believed that the muscles of the paired fins (collective term for pectoral and pelvic fins) of cartilaginous fish were ... Their study revealed how the muscles for pectoral fins and pelvic fins of cartilaginous fish are formed. ... and posterior fields in fin buds shifted as evolution progressed from fins to limbs. They further found that the genomic ...
Resurgence • Article - Fins in Focus
Fins in Focus. Issue 271 March/April 2012 Animals: A New Ethics Reviews Fins in Focus. by Barbara Gardner ... She graduated from Oxford University with a PhD in animal behaviour and, working first at the University of Glasgow and then at ... For me, the sheer scale of the exploitation makes this book a fundamental contribution to the science of animal welfare. ... Braithwaite asks where to draw the line with regard to animal welfare concerns, and she examines other peoples work on ...
China's ivory ban is great, now for shark fins and tiger bone | New Scientist
shark's fin | China Digital Times (CDT)
... have begun to speak out against animal cruelty. Animal welfare groups claim that this support from celebrities... ... Shark fin soup, once considered by Chinese as a symbol of status and wealth and a must-serve at wedding banquets, is now ... Shark fin soup, a symbol of wealth and social status across China, is banned at state banquets. The decision, carried out by ... Sharks fin soup has long been considered a delicacy in Chinese communities around the world, served for special occasions and ...
Toronto Bans Ownership, Sales and Consumption of Shark Fins
Regeneration of breeding tubercles on zebrafish pectoral fins requires androgens and two waves of revascularization |...
Animals. Fish were maintained at 28.5°C with a photoperiod of 14 hours of light and 10 hours of darkness, and fed regularly ( ... and DHT-treated fins indicates that keratinized BTs are present on all fins except the caudal fin (data not shown). ... The overall fin vasculature in females is similar to that described in caudal fins (Huang et al., 2003). One artery runs down ... Male pectoral fin BT regeneration. Mallory stain of intact (A) and regenerating (B-F) pectoral fin longitudinal sections. (A,B ...
Fin whale | mammal | Britannica
The fin whale is generally gray with a white underside, but the right side of the head has a light gray area, a white lower jaw ... Fin whale, (Balaenoptera physalus), a slender baleen whale, second in size to the blue whale and distinguishable by its ... The fin whales diet is unusually diverse for a cetacean, ranging from small crustaceans, such as copepods and krill, to fish ... The fin whale is generally gray with a white underside, but the right side of the head has a light gray area, a white lower jaw ...
Earth Times: show/news press release,59368.shtml
Animals help increase diversity of plant life in forested areas of France. Posted Mon, 21 Mar 2011 11:27:00 GMT by Michael ... Shark fins tracked by DNA. Posted Fri, 29 Apr 2011 09:20:00 GMT by Lucy Brake ... People wonder why and how hunted animals became the quieter beasts of burden and table fodder of modern times. Here is an ... The extinction of small and large, plant and animal is a daily event now, as climate change increasingly joins the other ...
Animals Photography Art for Sale: Prints, Paintings, Posters & Framed Wall Artwork | Art.com
Art.com offers the best selection of Animals Photography art prints for sale online, with easy pricing, free shipping & returns ... Shark Fin. Howard Sokol. Premium Photographic Print. 64 x 48,Multiple Sizes ... Animal HumorAnimal SkullsAnimal Tracks & Paw PrintsBaby AnimalsCountry Animals ... Baby Giraffe at Whipsnade Wild Animal Park Born, June 1996. Photographic Print. 64 x 48,Multiple Sizes ...
How a Zebrafish Regrows a Fin | Live Science
... ll grow the fin back within a week. Now scientists think they know how. ... If a zebrafish loses a chunk of its tail fin, not to worry, itâ€™ ... itll grow the fin back within a week. How this fish along with other cold-blooded animals, such as lizards, newts and frogs, ... Now a study has revealed some of the genes responsible for the cellular pathways that let a zebrafish restore its tail fin. ...
Shark fin soup alters an ecosystem - CNN.com
There is no animal on earth more vilified than the shark. Pop culture references and annual, over-hyped reports of attacks on ... KAOSHIUNG, Taiwan (CNN) -- There is no animal on earth more vilified than the shark. Pop culture references and annual, over- ... Shark fin soup can be expensive. A bowl of imperial shark fin soup can cost upwards of $100. These days, shark fin soup is so ... The fin is one of the most expensive pound-for-pound item from the sea. And the beauty about the fin is that its very compact ...
Marine Forensics Conservation - Shark Fin Soup Overfishing
But patterns buried within those fins DNA could reveal what region the fish came from-ultimately targeting those populations ... Overfishing has caused shark populations to plummet-and often they are hunted simply for their fins. ... who often slice off the fins and throw back the rest of the animal. This practice has taken an extreme toll on shark ... In the next few years, according to Chapman, scientists plan to create DNA maps for all the major species in the fin trade. And ...
Dolphin & Whale Hospital | Animal Hospitals | Mote Marine Laboratory & Aquarium
Turtle Hospital | Animal Hospitals | Mote Marine Laboratory & Aquarium
Fancy for fins pits sharks vs. fishermen - Orlando Sentinel
Once served at the banquet tables of Ming emperors, the ancient delicacy of shark-fin soup -- at $18 a bowl -- can be found at ... but a growing appetite for a soup made out of shark fins is wiping out millions of the predators each year, devastating ... Fins on the Internet. The worlds fin dealers congregate at Alibaba.com, a publicly traded Chinese company partly owned by ... Fancy for fins pits sharks vs. fishermen. David Fleshler, South Florida Sun-sentinel and Ludmilla Lelis, Sentinel Staff Writer ...
Fish fin - Wikipedia
Aquatic animals get significant thrust by moving fins back and forth in water. Often the tail fin is used, but some aquatic ... 1) pectoral fins (paired), (2) pelvic fins (paired), (3) dorsal fin,. (4) adipose fin, (5) anal fin, (6) caudal (tail) fin. ... Adipose fin Adipose fin of a trout. The adipose fin is a soft, fleshy fin found on the back behind the dorsal fin and just ... Caudal fin. (Tail fin) The caudal fin is the tail fin (from the Latin cauda meaning tail), located at the end of the caudal ...
Fish Stock Video - Download Video Clip Now - iStock
Transient 1a Induction Defines the Wound Epidermis during Zebrafish Fin Regeneration | proLékaře.cz
5. lamb1a is required for juvenile fin growth but not body growth. (A) Juvenile sde1 animals, after incubation from 4 to 6 ... After 2 weeks at 33°C, all 6 wpf sde1 animals (10/10) had noticeably degraded fins, whereas majority of sde1/+ siblings ... To determine temporal requirements for sde1 during fin regeneration, we shifted the animals from 25°C to 33°C at 0, 1, or 2 dpa ... Laminin protein in longitudinal sections of fins is localized to the basal side of the epitheilum in sde1/+ animals, but ...
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- In particular, the fins immediately upstream of the caudal (tail) fin may be proximate fins that can directly affect the flow dynamics at the caudal fin. (wikipedia.org)
- In development of the embryo in teleost fish, the dorsal fin arises from sections of the skin that from a caudal fin fold. (wikipedia.org)
- Here, we show that dlx5a is an early marker of apical ectodermal cells of the pectoral fin buds and of the median fin fold, but also of cleithrum precursor cells during pectoral girdle development. (archives-ouvertes.fr)
- Using morpholino-mediated knock down, we demonstrate that disrupted dlx5a/6a function results in pectoral fin agenesis associated with misexpression of bmp4, fgf8a, and1 and msx genes. (archives-ouvertes.fr)
- Our results demonstrate that the dlx5a/6a genes are essential for the induction of pectoral fin outgrowth, but are not required during median fin fold specification. (archives-ouvertes.fr)
- The data indicate distinct requirements for dlx5a/6a during median and pectoral fin development suggesting that initiation of unpaired and paired fin formation are not directed through the same molecular mechanisms. (archives-ouvertes.fr)
- During courtship, the female cichlid, Pelvicachromis taeniatus, displays a large and visually arresting purple pelvic fin. (wikipedia.org)
- The researchers found that males clearly preferred females with a larger pelvic fin and that pelvic fins grew in a more disproportionate way than other fins on female fish. (wikipedia.org)
- Fish, and other aquatic animals such as cetaceans, actively propel and steer themselves with pectoral and tail fins. (wikipedia.org)
- Often the tail fin is used, but some aquatic animals generate thrust from pectoral fins. (wikipedia.org)
- Cavitation damage can also occur to the tail fins of powerful swimming marine animals, such as dolphins and tuna. (wikipedia.org)
- Airplanes achieve similar results with small specialised fins that change the shape of their wings and tail fins. (wikipedia.org)
- Static tail fins are used as stabilizers Engineering fins are also used as heat transfer fins to regulate temperature in heat sinks or fin radiators. (wikipedia.org)
- Mesodermal origin of median fin mesenchyme and tail muscle in amphibian larvae. (sigmaaldrich.com)
- Using similar strategies in the Mexican axolotl (Ambystoma mexicanum), and the South African clawed toad (Xenopus laevis), we traced the origins of fin mesenchyme and tail muscle in amphibians. (sigmaaldrich.com)
- Here we present evidence that fin mesenchyme and striated tail muscle in both animals are derived solely from mesoderm and not from neural crest. (sigmaaldrich.com)
- A dorsal fin is a fin located on the back of most marine and freshwater vertebrates such as fishes , cetaceans ( whales , dolphins , and porpoises ), and the (extinct) ichthyosaur . (wikipedia.org)
- Most species have only one dorsal fin, but some have two or three. (wikipedia.org)
- The bony or cartilaginous bones that support the base of the dorsal fin in fish are called pterygiophores . (wikipedia.org)
- The main purpose of the dorsal fin is to stabilize the animal against rolling and to assist in sudden turns. (wikipedia.org)
- Many catfish can lock the leading ray of the dorsal fin in an extended position to discourage predation or to wedge themselves into a crevice. (wikipedia.org)
- The shape, size, position and colour of the dorsal fin varies with the type of billfish, and can be a simple way to identify a billfish species. (wikipedia.org)
- For example, the white marlin has a dorsal fin with a curved front edge and is covered with black spots. (wikipedia.org)
- The huge dorsal fin, or sail, of the sailfish is kept retracted most of the time. (wikipedia.org)
- The dorsal fin of a white shark contains dermal fibers that work "like riggings that stabilize a ship's mast", and stiffen dynamically as the shark swims faster to control roll and yaw. (wikipedia.org)
- A dorsal fin is classified as a medial , unpaired fin that is located on the midline of the backs of some aquatic vertebrates. (wikipedia.org)
- The basals are located at the base of the dorsal fin, and are closest to the body. (wikipedia.org)
- Dorsal fin of a perch showing the basals and radials of the pterygiophore that support the dorsal fin. (wikipedia.org)
- As they swim, they use other fins, such as dorsal and anal fins, to achieve stability and refine their maneuvering. (wikipedia.org)
- Nevertheless, they cannot swim faster because the cavitation bubbles create a vapor film around their fins that limits their speed. (wikipedia.org)
- Like tuna, mackerel and other scombroids, billfish streamline themselves by retracting their dorsal fins into a groove in their body when they swim. (wikipedia.org)
- Fins typically function as foils that produce lift or thrust, or provide the ability to steer or stabilize motion while traveling in water, air, or other fluid media. (wikipedia.org)
- Turbines and propellers (and sometimes fans and pumps) use a number of rotating fins, also called foils, wings, arms or blades. (wikipedia.org)
- A fin is a thin component or appendage attached to a larger body or structure. (wikipedia.org)
- The scaling relationship between the size of an appendage or organ and that of the body as a whole is tightly regulated during animal development. (nih.gov)
- Further, somatic transgenesis experiments indicate that kcnk5b acts locally within the mesenchyme of fins and barbels to specify appendage size. (nih.gov)
- Fish fins are used to generate thrust and control the subsequent motion. (wikipedia.org)
- Foil shaped fins generate thrust when moved, the lift of the fin sets water or air in motion and pushes the fin in the opposite direction. (wikipedia.org)
- Fins can also generate thrust if they are rotated in air or water. (wikipedia.org)
- Propellers use the fins to translate torquing force to lateral thrust, thus propelling an aircraft or ship. (wikipedia.org)
- Fins first evolved on fish as a means of locomotion. (wikipedia.org)
- Unlike dolphins, these fish do not feel the bubbles, because they have bony fins without nerve endings. (wikipedia.org)
- Fish use multiple fins, so it is possible that a given fin can have a hydrodynamic interaction with another fin. (wikipedia.org)
- In these types of fish, the fins are made of 2 main components. (wikipedia.org)
- It is a fish that blurs the distinction between a fish and a land-living animal. (uchicago.edu)
- It looks like a fish, in that it has scales and fins. (uchicago.edu)
- In fact, it is a mosaic of half limbed-animal and half fish. (uchicago.edu)
- That extinct animal actually had large, strong and mobile hind fins and an enlarged pelvis, suggesting that limbs in the front and rear evolved simultaneously. (washingtonpost.com)
- That went against the "front-wheel-drive" hypothesis that held limbs first evolved from front fins, while back fins stayed small , maybe even after fish transitioned to land. (washingtonpost.com)
- In the Late Devonian period about 350 million years ago, the first vertebrates to adapt to land were amphibians, and it is believed that their ancestors were primitive, now-extinct fish with fin-like limbs and belonging to the class Sarcopterygii. (titech.ac.jp)
- In my lab, we have been studying the developmental mechanisms responsible for the evolution of fins and limbs. (titech.ac.jp)
- Through research using catshark embryos, Tanaka's team revealed that the balance of the anterior (thumb side) and posterior fields in fin buds shifted as evolution progressed from fins to limbs. (titech.ac.jp)
- Regeneration epidermises of salamander limbs or teleost fins are known to express markers of developmental signaling pathways, including many secreted factors [ 8 , 14 ]. (prolekare.cz)
- As scientists learn more about the genes that shape animal musculoskeletal systems, they're uncovering clues about how our own limbs developed - and may someday regenerate. (sciencefriday.com)
- Meanwhile, researchers at the University of California-Irvine are wrapped up in another question about limbs - namely, if other animals can regenerate their limbs, why can't we? (sciencefriday.com)
- The limbs had evolved from fins. (gopetsamerica.com)
- Lobe-fins transformed into limbs during the Devonian period, facilitating the water-to-land transition in tetrapods. (sciencemag.org)
- We traced the evolution of well-articulated skeletons across the fins-to-limbs transition, using a network-based approach to quantify and compare topological features of fins and limbs. (sciencemag.org)
- We show that the topological arrangement of bones in pectoral and pelvic appendages evolved in parallel during the fins-to-limbs transition, occupying overlapping regions of the morphospace, following a directional trend, and decreasing their disparity over time. (sciencemag.org)
- We identify the presence of digits as the morphological novelty triggering topological changes that discriminated limbs from fins. (sciencemag.org)
- The evolution of tetrapod limbs from fish fins is heralded as one of the most important vertebrate morphological and functional transitions ( 1 - 8 ). (sciencemag.org)
- Establishing what makes an appendage a fin or a limb is key to properly characterizing the fins-to-limbs transition ( 3 ). (sciencemag.org)
- Developmental and paleontological studies place the distinction between fins and limbs in the most distal region, which bears the carpals/tarsals and digits in limbs and the radials and dermal lepidotrichia in fins ( 3 , 10 ). (sciencemag.org)
- The distinction between fins and limbs blurs when we look at the lobe-fins of transitional tetrapodomorphs, such as Panderichthys or Tiktaalik ( 11 - 14 ). (sciencemag.org)
- Both sarcopterygian fins and limbs share a division of the appendicular skeleton into three endoskeletal domains ( 15 ), of which the most distal domain differs most between sarcopterygian fishes (i.e., branching radial bones) and tetrapods (i.e., autopod with a mesopod and digits). (sciencemag.org)
- The caudal fins of adult zebrafish are supported by multiple bony rays that are laterally interconnected by soft interray tissue. (biologists.org)
- Here, we developed an experimental setup to measure the elastic properties of caudal fins in vivo by applying micro-Newton forces to obtain bending stiffness and a tensional modulus. (biologists.org)
- If you notice, 4 of the rays of the lower part of his caudal fins have broken off. (hubpages.com)
- almost all cetaceans possess a dorsal fin that serves as a keel. (britannica.com)
- The dorsal fin and flukes are composed of connective tissue, not bone. (britannica.com)
- females and young males have a dorsal fin that is about half that size and distinctly sickle-shaped (falcate). (britannica.com)
- Sexually dimorphic breeding tubercles (BTs) are keratinized epidermal structures that form clusters on the dorsal surface of the anterior rays of zebrafish male pectoral fins. (biologists.org)
- In some species of Phoxinus , large BTs have been found to form clusters on the dorsal surface of the central to more anterior pectoral fin rays ( Chen and Arratia, 1996 ). (biologists.org)
- As they swim, they use other fins, such as dorsal and anal fins, to achieve stability and refine their maneuvering. (wikipedia.org)
- Dorsal fins are located on the back. (wikipedia.org)
- A fish can have up to three dorsal fins. (wikipedia.org)
- The dorsal fins serve to protect the fish against rolling, and assist it in sudden turns and stops. (wikipedia.org)
- In anglerfish , the anterior of the dorsal fin is modified into an illicium and esca , a biological equivalent to a fishing rod and lure . (wikipedia.org)
- The bones that support the dorsal fin are called Pterygiophore . (wikipedia.org)
- The adipose fin is a soft, fleshy fin found on the back behind the dorsal fin and just forward of the caudal fin. (wikipedia.org)
- Actinopterygians, the ray-finned fish show an evolutionary pattern of fine control ability to control the dorsal and ventral lobe of the caudal fin. (wikipedia.org)
- 45 Aging Gag Using Dorsal Fin-Rays. (ufl.edu)
- Percent agreement between ages estima ted from otoliths and dorsal fin rays relative to the otol ith-assigned age for Reader 1 (n=453). (ufl.edu)
- Mean annular diameter of the first and second annulus was taken by measuring perpendicular to the axis of the inner gr oove of the base of a dorsal fin ray of gag. (ufl.edu)
- The crown jewel of the operation, though, was a state-of-the-art satellite transmitter, drilled and bolted onto the shark's dorsal fin. (wired.com)
- We collected pectoral fin spines, vertebrae, and dorsal fin spines to estimate the fish's age. (thefreedictionary.com)
- Upon close observation, cutaneous ridges may be seen on the surface of a dolphin's skin that run circumferentially around the body trunk and vary in direction past the dorsal fin and other isolated areas. (seaworld.org)
- Dorsal fin notched deeply with 10 spines in anterior and 1 spine and 26-30 soft rays in posterior portion. (calvertmarinemuseum.com)
- The dorsal fin is 3/4 of the way back along the length of the body, and it is sickle-shaped. (npolar.no)
- Fin whales are the most streamlined in appearance of all the rorquals, and the distinct ridge along the back behind the dorsal fin gives them the nickname "razorback" (Leatherwood and Reeves 1983). (nammco.no)
- Their exceptionally large size, streamlined appearance and the small falcate dorsal fin appearing just after the blow are probably the best identifying feature. (nammco.no)
- Fin whales have a falcate dorsal fin, about 60 cm high, set about two-thirds back along the body. (nammco.no)
- Whether large or small- with fins, feathers or fur- animals are natural healing resources. (campwidow.org)
- Inform students that all animals have one of three types of body coverings: fur, scales, or feathers. (education.com)
- Explain to your students that animals with feathers are called birds . (education.com)
- Learn the difference between fur, feathers and scales with this adorable animal worksheet! (education.com)
- Fins or Feathers? (education.com)
- Practice your child's science skills with this fun worksheet, which will help your child determine which animals have feathers, and which have fins. (education.com)
- Feathers, Fins, Fur and more. (absolutewrite.com)
Pectoral and pelvic1
- Fin whales have an incompliant aorta, which, we hypothesize, represents an adaptation to large, depth-induced variations in arterial transmural pressures. (biologists.org)
- In comparison to the aorta of a terrestrial mammal, fin whales ( Balaenoptera physalus Linnaeus 1758) are reported to have an unusually compliant aortic arch coupled to an unusually incompliant aorta ( Shadwick and Gosline, 1994 ). (biologists.org)
- The call of fin whales ( Balaenoptera physalus ) recorded in the Atlantic Ocean and played back at 10 times normal speed. (britannica.com)
- Washington, DC-The Animal Welfare Institute (AWI) commends Senators Cory Booker (D-NJ) and Johnny Isakson (R-GA) for introducing Tuesday the Scientific Assistance for Very Endangered (SAVE) Right Whales Act (S.2453) to help protect this highly imperiled. (awionline.org)
- Baleen whales are some of the world's largest animals. (seaworld.org)
- To address this need, we founded the National Marine Life Center to build a marine animal hospital within the stranding hotspot to give ailing sea turtles, seals, dolphins, porpoises and small whales the best chance for survival and return to the wild. (nmlc.org)
- The fin whale is the second longest of all of the baleen whales, and has the typical rorqual body form, which is long, slender and streamlined. (npolar.no)
- Fin whales produce a tall columnar blow that can be six metres high. (npolar.no)
- Additionally, fin whales have "chevrons", which are light strips of brownish-grey that start just behind the blowhole and run back on the body in the shape of broad "V"s. (npolar.no)
- But, some fin whales tend to remain in the north even in the winter, and there are no definitive wintering grounds known. (npolar.no)
- However, some of the fin whales that spend the summer in the North Atlantic winter as far south as the Gulf of Mexico in the west and the coast of Spain in the east. (npolar.no)
- In the northeast Atlantic there are thought to be 25,000-30,000 fin whales. (npolar.no)
- Fin whales are loosely social, and are usually found in small flexible groups, although they can be seen singly and sometimes form large groups in areas with very high productivity. (npolar.no)
- The sounds made by fin whales are quite simple, mostly consisting of groans and grunts or pulsed high-frequency sounds. (npolar.no)
- Fin whales are fast swimmers, cruising at up to 15 km per hour and they are capable of burst swimming for short periods at speeds up to 28 kilometers per hour. (npolar.no)
- Killer whales are the only known natural predator of fin whales. (npolar.no)
- Fin whales are born on the wintering grounds and accompany their mothers to higher latitudes during their first migration. (npolar.no)
- Northern hemisphere fin whales mate from December through to February. (npolar.no)
- Fins whales reach sexual maturity sometime between the ages of six and eight. (npolar.no)
- Fin whales were not harvested in the early history of commercial whaling, because their rapid swimming speeds meant that they could out-run whaling ships. (npolar.no)
- But, when steam-powered vessels and explosive harpoons were developed late in the 1800s fin whales became prime targets because of their large size. (npolar.no)
- Fin whales are sleek, fast swimmers. (nammco.no)
- Summer distribution of fin whales in the North Atlantic, showing sightings and effort from all North Atlantic Sightings surveys, 1987 - 2015, as well as 2007 CODA and SNESSA surveys. (nammco.no)
- Over 50,000 fin whales in the North Atlantic (NAMMCO 2011ac). (nammco.no)
- Some fin whales have a pale grey chevron on each side behind the head and there may be a dark stripe running up and back from the eye, and a light stripe arching down to where the flipper joins the body. (nammco.no)
- Why fin whales have this asymmetrical pigmentation, rare among mammals, is not known, although it has been speculated that it may have something to do with their feeding strategy. (nammco.no)
- Despite a two-year hiatus, Iceland's whaling kingpin has decided to resume hunting endangered fin whales this summer. (onegreenplanet.org)
- Fins and flippers are aquatically adapted appendages and typically aren't very useful in such an environment. (wikipedia.org)
- Feet, Fins, & Flippers 5K Thank Yous! (nmlc.org)
- Thank you to everyone who participated in the adventure that became NMLC's first VIRTUAL Feet, Fins, & Flippers 5K! (nmlc.org)
- With 303 participants from 25 states and 4 countries, as well as with the wonderful sponsors below, this year's Feet, Fins, & Flippers 5K was our most successful to date. (nmlc.org)
- Another signaling pathway under the control of the so-called Wnt5b protein then turns down these genes, impairs cell growth and inhibits fin regeneration. (livescience.com)
- Here, we performed a large-scale, unbiased genetic screen for epithelial signaling deficiencies during the regeneration of amputated adult zebrafish fins, from which we identified several new mutants. (prolekare.cz)
- One gene identified from this screen disrupts a specific component of the extracellular matrix material Laminin, Laminin beta 1a, a factor that we find to be dispensable in uninjured adult animals but required for all stages fin regeneration. (prolekare.cz)
- Interestingly, fgf20a and igf2b ligand genes are induced within hours of fin amputation in mesenchymal cells, and perturbation of Fgf signaling via a mutation in the fgf20a ligand gene, or of Igf signaling by receptor inhibition, disrupts formation of the regeneration epidermis and subsequent bone regeneration [ 20 , 21 ]. (prolekare.cz)
- Because there's so much regeneration everywhere in the animal world. (sciencefriday.com)
- Zebrafish therefore are a favored animal model to study the cellular and molecular principles of organ regeneration. (innovations-report.com)
- The 'Planet in Peril' crew traveled with Knights to Taiwan's southern port city of Kaohsiung, which is considered one of the world's main hubs for shark fins. (cnn.com)
- The world's fin dealers congregate at Alibaba.com , a publicly traded Chinese company partly owned by Yahoo that lists about 300 sellers. (orlandosentinel.com)
- The fin whale is found in all of the world's major oceans. (npolar.no)
Attached to the pectoral1
- Veterinary and medical scientists wonder if warm-blooded animals that evolved from these simpler creatures, might still have untapped regenerative powers hidden in their genes. (livescience.com)
- To compare the relative importance of Hox genes during fin versus limb morphogenesis, we cloned zebrafish (Danio rerio) HoxD and HoxA complex genes and analysed their expression during fin development. (nih.gov)
- Whole mount in situ hybridization revealed specific expression of these genes in the eye and Fin buds. (nih.gov)
- The irony is that shark fin is flavorless -- its cartilage has a chewy consistency. (cnn.com)
- The soup uses only the fins' cartilage needles, which provide a gelatinous texture but no flavor. (orlandosentinel.com)
- The study suggests that consumption of shark fin soup and cartilage pills may pose a significant health risk for degenerative brain diseases. (miami.edu)
- We amplified a fragment of the cytochrome c oxidase subunit I gene from shark fin, cartilage and meat, as well as ray gill plates and meat for DNA sequencing. (springer.com)
- For instance, while it's long been known that there are similarities between our arm bones and other bones in a fish's fin, scientists once thought that the skinny, finger-like bones of the pectoral fin had been lost in our common ancestor. (sciencefriday.com)
- Have you ever looked at your hand or you five fingers and thought that it must be an evolutionary descendant of all those long tiny bones at the end of a fish's pectoral fins? (sciencefriday.com)
- a fish's caudal fin. (thefreedictionary.com)
Shark fin trade2
Demand for shark4
- They are primarily killed for their fins alone, to fuel the growing demand for shark fin soup, which is an Asia delicacy. (miami.edu)
- Not only does this work provide important information on one probable route of human exposure to BMAA, it may lead to a lowering of the demand for shark fin soup and consumption of shark products, which will aid ocean conservation efforts," added Hammerschlag. (miami.edu)
- Will this effect the demand for shark fin soup and other shark fin products worldwide? (miami.edu)
- However, as the demand for shark fin continues to rise, so too does the price, and shark fins have become a hot commodity. (greenpeace.org)
- Which raises the question: does bird watching or being around animals in nature (that we can't touch) help humans emotionally too? (pawmanefin.com)
- As director of the department of comparative medicine at the Johns Hopkins School of Medicine, the 52-year-old scientist, who holds doctorates in veterinary medicine and in pathology, studies the way similar diseases attack humans and animals. (baltimoresun.com)
- A new study by University of Miami (UM) scientists in the journal Marine Drugs has discovered high concentrations of BMAA in shark fins, a neurotoxin linked to neurodegenerative diseases in humans including Alzheimer's and Lou Gehrig Disease (ALS). (miami.edu)
- The concentrations of BMAA in the samples are a cause for concern, not only in shark fin soup, but also in dietary supplements and other forms ingested by humans," says study co-author Prof. Deborah Mash, Director of the University of Miami Brain Endowment Bank. (miami.edu)
- We often hear about the biggest animals that would easily tower over humans twice, thrice, and some even ten times. (boredpanda.com)
- Dolphins, with their charmingly playful personalities, breathtaking acrobatic abilities, and affinity for humans, are among the most sought-after animals for viewing by humans. (crunchyroll.com)
- This entry was posted in Marine Affairs & Policy and tagged Alzheimers , BMAA , Dr. Deborah Mash , Dr. Neil Hammerschlag , Lou Gehrig Disease , Miami Brain Endowment Bank , R.J. Dunlap Marine Conservation Program , Shark Fin Soup by RSMAS . (miami.edu)
- Help Marine Animals when you shop on Amazon! (nmlc.org)
- The National Marine Life Center is an independent, non-profit 501(c)(3) marine animal hospital and science and education center. (nmlc.org)
- The National Marine Life Center is building a new Marine Animal Hospital and Discovery Center. (nmlc.org)
- Each year hundreds of helpless marine animals, all federally protected and most endangered, beach on our shores, alive and in desperate need of medical care. (nmlc.org)
- The center draws salt water, the very lifeblood of any marine animal facility, directly from Cape Cod Canal through its new life support building. (nmlc.org)
- With unique insight gained through marine animal care, we learn science lessons from our patients that tell us about the health of the oceans. (nmlc.org)
- Knowledge treating marine animals has improved human medical treatment for ailments such as middle ear infections and pediatric joint injuries. (nmlc.org)
- Designed from stem to stern as a model green facility, the National Marine Life Center will meet the medical and rehabilitative needs of stranded marine animals in Cape Cod and the northeast region, while we model through example the key lessons of ocean conservation. (nmlc.org)
- This sea animal is notorious among marine biologists as a dolphin that has a problem with us. (listverse.com)
- Although we've been fascinated by these animals for thousands of years, it wasn't until approximately the 1940's that research in the field of marine mammals really began. (crunchyroll.com)
- Fin and flipper locomotion occurs mostly in aquatic locomotion, and rarely in terrestrial locomotion. (wikipedia.org)
- Their pectoral fins are specifically modified for terrestrial locomotion. (springer.com)
- Studies of the anatomy and kinematics of adult mudskippers suggest that modifications of the pectoral fins, such as their protrusion and elongation of the proximal radials, may provide greater control and flexibility in pectoral fin-based locomotion. (springer.com)
- In the choir of St. Catherine's hall visitors stand under the 15-metre-long skeleton of a fin whale that was salvaged off Hiddensee in 1825. (meeresmuseum.de)
- The historical fin whale skeleton shown in the choir of St. Catherine's hall and the whale's giant organs displayed in the showcase below seem like a logic set. (meeresmuseum.de)
- Researchers from Bayreuth University (Germany) uncover mechanisms that allow bone-forming cells to regenerate a correctly shaped new fin skeleton. (innovations-report.com)
- Up to now only little was known about how changes in the differentiation status of osteoblasts are brought about, and it was unknown how zebrafish manage to regenerate the exact shape of the lost fin skeleton. (innovations-report.com)
- How is the exact shape of the fin skeleton regenerated? (innovations-report.com)
- It's easy to spot fin rot because it slowly eats away your bettas fins so that it becomes shorter and uglier. (hubpages.com)
- when my female Betta approaches his nest he gets aggressive and nips their fins when will he embracei have a male red Betta (3inch in length) and 3 female bettas (1.5 inch) in a tank filled with 10 litres of water and height of about 12cms. (hubpages.com)
- Following pectoral fin amputation, BT clusters regenerate after the initiation of revascularization, but concomitantly with a second wave of angiogenesis. (biologists.org)
- However, upon amputation the tissue beneath the wound initiates a massive bout of retinoic acid synthesis that is required to mobilize cell division in the fin stump. (innovations-report.com)
- An environment-friendly propulsion system mimicking undulating fins of stingray had been built. (scientific.net)
- Finally, we draw a conclusion that the generated propulsion force of the biomimetic propulsor is gradually increase with the obliquity of the fin ray from 0 degree till a certain angle and then gradually decrease with the obliquity of the fin ray from the certain angle till 90 degree. (scientific.net)
- But at this port, we see more fins than bodies as a forklift scoops up large piles of fins and dumps them into a truck. (cnn.com)
- Along the margin at the rear of their bodies is a line of small rayless, non-retractable fins, known as finlets. (wikipedia.org)
- Adaptation Fins and streamlined bodies. (prezi.com)
- These cold-blooded animals are found in most bodies of water regardless of location. (fineartamerica.com)
- Necropsies -- the animal equivalent of autopsies -- performed on some of the zoo's birds showed they were getting too much iron in the commercial feed then being used. (baltimoresun.com)
- Students will be able to use language to describe observations between different types of animals such as mammals, reptiles, and birds. (education.com)
- Wire grill prevents animals or birds from contacting bulbs. (motherearthnews.com)