Brachyura: An infraorder of chiefly marine, largely carnivorous CRUSTACEA, in the order DECAPODA, including the genera Cancer, Uca, and Callinectes.Daphne: A plant genus of the family THYMELAEACEAE. They are evergreen shrubs much cultivated in garden borders and rock gardens in mild climates. Members contain mezerein, flavonoids, and COUMARINS such as daphnetin and daphnin.Lactosylceramides: Glycosphingolipids which contain as their polar head group a lactose moiety bound in glycosidic linkage to the hydroxyl group of ceramide. Their accumulation in tissue, due to a defect in lactosylceramide beta-galactosidase, is the cause of lactosylceramidosis.Expeditions: Usually refers to planned scientific data-gathering excursions.Bioprosthesis: Prosthesis, usually heart valve, composed of biological material and whose durability depends upon the stability of the material after pretreatment, rather than regeneration by host cell ingrowth. Durability is achieved 1, mechanically by the interposition of a cloth, usually polytetrafluoroethylene, between the host and the graft, and 2, chemically by stabilization of the tissue by intermolecular linking, usually with glutaraldehyde, after removal of antigenic components, or the use of reconstituted and restructured biopolymers.Iguanas: Large herbivorous tropical American lizards.Decapoda (Crustacea): The largest order of CRUSTACEA, comprising over 10,000 species. They are characterized by three pairs of thoracic appendages modified as maxillipeds, and five pairs of thoracic legs. The order includes the familiar shrimps, crayfish (ASTACOIDEA), true crabs (BRACHYURA), and lobsters (NEPHROPIDAE and PALINURIDAE), among others.Octopodiformes: A superorder in the class CEPHALOPODA, consisting of the orders Octopoda (octopus) with over 200 species and Vampyromorpha with a single species. The latter is a phylogenetic relic but holds the key to the origins of Octopoda.AnguillaAir Sacs: Thin-walled sacs or spaces which function as a part of the respiratory system in birds, fishes, insects, and mammals.Dracunculoidea: A superfamily of nematodes of the suborder CAMALLANINA. Its organisms possess a poorly developed buccal cavity and a rudimentary esophagus and intestine.Eels: Common name for an order (Anguilliformes) of voracious, elongate, snakelike teleost fishes.Spirurida Infections: Infections with nematodes of the order SPIRURIDA.Gills: Paired respiratory organs of fishes and some amphibians that are analogous to lungs. They are richly supplied with blood vessels by which oxygen and carbon dioxide are exchanged directly with the environment.Molting: Periodic casting off FEATHERS; HAIR; or cuticle. Molting is a process of sloughing or desquamation, especially the shedding of an outer covering and the development of a new one. This phenomenon permits growth in ARTHROPODS, skin renewal in AMPHIBIANS and REPTILES, and the shedding of winter coats in BIRDS and MAMMALS.ArgentinaSex Characteristics: Those characteristics that distinguish one SEX from the other. The primary sex characteristics are the OVARIES and TESTES and their related hormones. Secondary sex characteristics are those which are masculine or feminine but not directly related to reproduction.Escape Reaction: Innate response elicited by sensory stimuli associated with a threatening situation, or actual confrontation with an enemy.Relative Biological Effectiveness: The ratio of radiation dosages required to produce identical change based on a formula comparing other types of radiation with that of gamma or roentgen rays.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)Copyright: It is a form of protection provided by law. In the United States this protection is granted to authors of original works of authorship, including literary, dramatic, musical, artistic, and certain other intellectual works. This protection is available to both published and unpublished works. (from Circular of the United States Copyright Office, 6/30/2008)Organizations, Nonprofit: Organizations which are not operated for a profit and may be supported by endowments or private contributions.Patents as Topic: Exclusive legal rights or privileges applied to inventions, plants, etc.Togo: A republic in western Africa, lying between GHANA on its west and BENIN on its east. Its capital is Lome.MedlinePlus: NATIONAL LIBRARY OF MEDICINE service for health professionals and consumers. It links extensive information from the National Institutes of Health and other reviewed sources of information on specific diseases and conditions.Computer Security: Protective measures against unauthorized access to or interference with computer operating systems, telecommunications, or data structures, especially the modification, deletion, destruction, or release of data in computers. It includes methods of forestalling interference by computer viruses or so-called computer hackers aiming to compromise stored data.Hepatopancreas: A primitive form of digestive gland found in marine ARTHROPODS, that contains cells similar to those found in the mammalian liver (HEPATOCYTES), and the PANCREAS.KuwaitCrustacea: A large subphylum of mostly marine ARTHROPODS containing over 42,000 species. They include familiar arthropods such as lobsters (NEPHROPIDAE), crabs (BRACHYURA), shrimp (PENAEIDAE), and barnacles (THORACICA).IraqGulf War: United Nations' action to intervene in conflict between the nation of Kuwait and occupying Iraqi forces, occurring from 1990 through 1991.Indian Ocean: A body of water covering approximately one-fifth of the total ocean area of the earth, extending amidst Africa in the west, Australia in the east, Asia in the north, and Antarctica in the south. Including the Red Sea and the Persian Gulf, it constitutes the third largest ocean after the ATLANTIC OCEAN and the PACIFIC OCEAN. (New Encyclopaedia Britannica Micropaedia, 15th ed, 1990, p289)Sierra Leone: A republic in western Africa, south of GUINEA and west of LIBERIA. Its capital is Freetown.Unemployment: The state of not being engaged in a gainful occupation.Lassa virus: A species of ARENAVIRUS, part of the Old World Arenaviruses (ARENAVIRUSES, OLD WORLD), and the etiologic agent of LASSA FEVER. LASSA VIRUS is a common infective agent in humans in West Africa. Its natural host is the multimammate mouse Mastomys natalensis.Lassa Fever: An acute febrile human disease caused by the LASSA VIRUS.Africa, Western: The geographical area of Africa comprising BENIN; BURKINA FASO; COTE D'IVOIRE; GAMBIA; GHANA; GUINEA; GUINEA-BISSAU; LIBERIA; MALI; MAURITANIA; NIGER; NIGERIA; SENEGAL; SIERRA LEONE; and TOGO.Fraud: Exploitation through misrepresentation of the facts or concealment of the purposes of the exploiter.Onchocerciasis, Ocular: Filarial infection of the eyes transmitted from person to person by bites of Onchocerca volvulus-infected black flies. The microfilariae of Onchocerca are thus deposited beneath the skin. They migrate through various tissues including the eye. Those persons infected have impaired vision and up to 20% are blind. The incidence of eye lesions has been reported to be as high as 30% in Central America and parts of Africa.Hospital-Physician Joint Ventures: A formal financial agreement made between one or more physicians and a hospital to provide ambulatory alternative services to those patients who do not require hospitalization.Birds: Warm-blooded VERTEBRATES possessing FEATHERS and belonging to the class Aves.Butterflies: Slender-bodies diurnal insects having large, broad wings often strikingly colored and patterned.Capital Financing: Institutional funding for facilities and for equipment which becomes a part of the assets of the institution.Investments: Use for articles on the investing of funds for income or profit.North CarolinaAirports: Terminal facilities used for aircraft takeoff and landing and including facilities for handling passengers. (from McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed.)Spermatozoa: Mature male germ cells derived from SPERMATIDS. As spermatids move toward the lumen of the SEMINIFEROUS TUBULES, they undergo extensive structural changes including the loss of cytoplasm, condensation of CHROMATIN into the SPERM HEAD, formation of the ACROSOME cap, the SPERM MIDPIECE and the SPERM TAIL that provides motility.Bursa of Fabricius: An epithelial outgrowth of the cloaca in birds similar to the thymus in mammals. It atrophies within 6 months after birth and remains as a fibrous remnant in adult birds. It is composed of lymphoid tissue and prior to involution, is the site of B-lymphocyte maturation.Sperm Head: The anterior portion of the spermatozoon (SPERMATOZOA) that contains mainly the nucleus with highly compact CHROMATIN material.Microscopy, Electron: Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen.Acrosome Reaction: Changes that occur to liberate the enzymes of the ACROSOME of a sperm (SPERMATOZOA). Acrosome reaction allows the sperm to penetrate the ZONA PELLUCIDA and enter the OVUM during FERTILIZATION.Sperm Motility: Movement characteristics of SPERMATOZOA in a fresh specimen. It is measured as the percentage of sperms that are moving, and as the percentage of sperms with productive flagellar motion such as rapid, linear, and forward progression.

The respiratory responses of Carcinus maenas to declining oxygen tension. (1/818)

The degree of respiratory independence shown by Carcinus under conditions of declining oxygen tension is dependent on the animal's level of activity. Inactive Carcinus are capable of maintaining respiratory independence down to a Po2 of 60-80 mmHg. This is achieved primarily by an increase in ventilation volume such that the amount of oxygen made available at the respiratory surfaces remains constant over a wide range of oxygen tension. The Po2 at which this can no longer be maintained corresponds closely to the Po2 at which respiratory independence is lost. Under normoxic conditions the Po2 of the post- and prebranchial blood was 97 and 18 mmHg respectively. At the high oxygen tensions prevailing in the postbranchial blood the respiratory pigment is fully saturated. Under conditions of declining oxygen tension the heart rate remains more or less constant until the Po2 reaches 60-80 mmHg, the onset of bradycardia coinciding with the loss of saturation of the haemocyanin. Although cardiac output falls during hypoxia, the capacity rate ratio remains approximately constant, which enables the effectiveness of oxygen uptake by the blood to remain at a high level.  (+info)

Gating of afferent input by a central pattern generator. (2/818)

Intracellular recordings from the sole proprioceptor (the oval organ) in the crab ventilatory system show that the nonspiking afferent fibers from this organ receive a cyclic hyperpolarizing inhibition in phase with the ventilatory motor pattern. Although depolarizing and hyperpolarizing current pulses injected into a single afferent will reset the ventilatory motor pattern, the inhibitory input is of sufficient magnitude to block afferent input to the ventilatory central pattern generator (CPG) for approximately 50% of the cycle period. It is proposed that this inhibitory input serves to gate sensory input to the ventilatory CPG to provide an unambiguous input to the ventilatory CPG.  (+info)

Network oscillations generated by balancing graded asymmetric reciprocal inhibition in passive neurons. (3/818)

We describe a novel mechanism by which network oscillations can arise from reciprocal inhibitory connections between two entirely passive neurons. The model was inspired by the activation of the gastric mill rhythm in the crab stomatogastric ganglion by the modulatory commissural ganglion neuron 1 (MCN1), but it is studied here in general terms. One model neuron has a linear current-voltage (I-V) curve with a low (L) resting potential, and the second model neuron has a linear current-voltage curve with a high (H) resting potential. The inhibitory connections between them are graded. There is an extrinsic modulatory excitatory input to the L neuron, and the L neuron presynaptically inhibits the modulatory neuron. Activation of the extrinsic modulatory neuron elicits stable network oscillations in which the L and H neurons are active in alternation. The oscillations arise because the graded reciprocal synapses create the equivalent of a negative-slope conductance region in the I-V curves for the cells. Geometrical methods are used to analyze the properties of and the mechanism underlying these network oscillations.  (+info)

The effects of osmotic stress on the electrical properties of the axons of a marine osmoconformer (Mala squinado. brachyura: crustacea). (4/818)

In contrast to the depolarization observed in hyperosmotic media, exposure of peripheral nerve to hyposmotic conditions induced pronounced axonal hyperpolarization. It is suggested that this hyperpolarization resulted from increased potassium and chloride permeabilities which could assist axonal volume regulation in hyposmotic conditions. The hyperpolarization was readily reversible, but the spike-generating mechanism suffered irreversible damage at hyposmotic concentrations below 665 m-osmoles. It is suggested that this axonal damage contributes to the lethal effects of hyposmotic stress in this crustacean osmoconformer and, possibly, in some euryhaline osmoregulators.  (+info)

Selective inhibition of transient K+ current by La3+ in crab peptide-secretory neurons. (5/818)

Although divalent cations and lanthides are well-known inhibitors of voltage-dependent Ca2+ currents (ICa), their ability to selectively inhibit a voltage-gated K+ current is less widely documented. We report that La3+ inhibits the transient K+ current (IA) of crab (Cardisoma carnifex) neurosecretory cells at ED50 approximately 5 microM, similar to that blocking ICa, without effecting the delayed rectifier K+ current (IK). Neurons were dissociated from the major crustacean neuroendocrine system, the X-organ-sinus gland, plated in defined medium, and recorded by whole cell patch clamp after 1-2 days in culture. The bath saline included 0.5 microM TTX and 0.5 mM CdCl2 to eliminate inward currents. Responses to depolarizing steps from a holding potential of -40 mV represented primarily IK. They were unchanged by La3+ up to 500 microM. Currents from -80 mV in the presence of 20 mM TEA were shown to represent primarily IA. La3+ (with TEA) reduced IA and maximum conductance (GA) by approximately 10% for 1 microM and another 10% each in 10 and 100 microM La3+. Normalized GA-V curves were well fit with a single Boltzmann function, with V1/2 +4 mV and slope 15 mV in control; V1/2 was successively approximately 15 mV depolarized and slope increased approximately 2 mV for each of these La3+ concentrations. Cd2+ (1 mM), Zn2+ (200 microM), and Pb2+ (100 microM) or removal of saline Mg2+ (26 mM) had little or no effect on IA. Steady-state inactivation showed similar right shifts (from V1/2 -39 mV) and slope increases (from 2.5 mV) in 10 and 100 microM La3+. Time to peak IA was slowed in 10 and 100 microM La3+, whereas curves of normalized time constants of initial decay from peak IA versus Vc were right-shifted successively approximately 15 mV for the three La3+ concentrations. The observations were fitted by a Woodhull-type model postulating a La3+-selective site that lies 0.26-0.34 of the distance across the membrane electric field, and both block of K+ movement and interaction with voltage-gating mechanisms; block can be relieved by depolarization and/or outward current. The observation of selective inhibition of IA by micromolar La3+ raises concerns about its use in studies of ICa to evaluate contamination by outward current.  (+info)

Receptor potentials and electrical properties of nonspiking stretch-receptive neurons in the sand crab Emerita analoga (Anomura, Hippidae). (6/818)

Receptor potentials and electrical properties of nonspiking stretch-receptive neurons in the sand crab Emerita analoga (Anomura, Hippidae). Four nonspiking, monopolar neurons with central somata and large peripheral dendrites constitute the sole innervation of the telson-uropod elastic strand stretch receptor in Emerita analoga. We characterized their responses to stretch and current injection, using two-electrode current clamp, in intact cells and in two types of isolated peripheral dendritic segments, one that included and one that excluded the dendritic termini (mechanosensory membrane). The membrane potentials of intact cells at rest (mean +/- SD: -57 +/- 4. 4 mV, n = 30), recorded in peripheral or neuropil processes, are similar to the membrane potentials of isolated dendritic segments and always less negative than membrane potentials of motoneurons and interneurons recorded in the same preparations. Ion substitution experiments indicate that the membrane potential is influenced strongly by Na+ conductance, probably localized in the mechanotransducing terminals within the elastic strand. The form of the receptor potential in response to ramp-hold-release stretch remains the same as stretch amplitude is varied and is not dependent on initial membrane potential (-70 to -30 mV) or recording site: initial depolarization (slope follows ramp of applied stretch), terminated by rapid, partial repolarization to a plateau (delayed depolarization) that is intermediate between the peak depolarization and the initial potential and sustained for the duration of the stretch. Responses to depolarizing current pulses are similar to stretch-evoked receptor potentials, except for small amplitude stimuli: an initial peak occurs only in response to stretch and probably reflects elastic recoil of the extracellular matrix surrounding the dendritic terminals. The rapid, partial repolarization depends on holding potential and is abolished by 4-aminopyridine (4-AP; 10 mM), implicating a fast-activating, fast-inactivating K+ conductance; TEA (60 mM) abolishes the remaining slow repolarization to the plateau. In intact cells, but not dendritic segments, regenerative depolarizations can arise in response to stretch or depolarizing current pulses; they are reduced by CdCl2 (10 microM) in the saline containing TEA and 4-AP and probably reflect current spread from Ca2+ influx at presynaptic terminals in the ganglion. We found no evidence for other voltage-activated conductances. Unlike morphologically similar "nonspiking" thoracic receptors of other species, E. analoga's nonspiking neurons are electrically compact and do not boost the analogue afferent signal by voltage-activated inward currents. The most prominent (only?) voltage-activated extra-ganglionic conductances are for potassium; by reducing the slope of the stretch-plateau depolarization curve, they extend each neuron's functional range to the full range of sensitivity of the receptor.  (+info)

Heterothermal acclimation: an experimental paradigm for studying the control of thermal acclimation in crabs. (7/818)

A method for the study of the control of the attainment of thermal acclimation has been applied to the crabs, Cancer pagurus and Carcinus maenas. Crabs were heterothermally acclimated by using an anterior-posterior partition between two compartments, one at 8 degrees C and the other at 22 degrees C. One compartment held a three-quarter section of the crab including the central nervous system (CNS), eye stalks, and ipsilateral legs; the other held a quarter section including the contralateral legs. Criteria used to assess the acclimation responses were comparisons of muscle plasma membrane fatty acid composition and "fluidity." In both species, the major fatty acids of phosphatidylcholine were 16:0, 18:1, 20:5, and 22:6, whereas phosphatidylethanolamine contained significantly less 16:0 but more 18:0; these fatty acids comprised 80% of the total. Differences in fatty acid composition were demonstrated between fractions obtained from the ipsilateral and contralateral legs from the same heterothermally acclimated individual. In all acclimation states (except 22CNS, phosphatidylcholine fraction), membrane lipid saturation was significantly increased with acclimation at 22 degrees as compared with 8 degrees C. Membrane fluidity was determined by using 1,3-diphenyl-1,3,5 hexatriene (DPH) fluorescence polarization. In both species, membranes from legs held at 8 degrees were more fluid than from legs held at 22 degrees C irrespective of the acclimation temperature of the CNS. Heterothermal acclimation demonstrated that leg muscle membrane composition and fluidity respond primarily to local temperature and were not predominately under central direction. The responses between 8 degrees C- and 22 degrees C-acclimated legs were more pronounced when the CNS was cold-acclimated, so a central influence cannot be excluded.  (+info)

Repeated hand urticaria due to contact with fishfood. (8/818)

BACKGROUND: The etiology of urticaria is often difficult to determine. However, in case of repeated circumstance-connected urticaria, the reason may be easily clarifyable. CASE: A 51-year-old healthy woman repeatedly experienced occupational hand urticaria when handling fish food. An unexpected reason for the urticaria was found in that the fishfood contained histamine as a "contaminant". CONCLUSIONS: In fishfood batches, biological degradation can produce histamine and possibly other toxic substances that can lead to occupational health problems.  (+info)

Blue crabs Callinectes sapidus Rathbun, 1896 support large commercial and recreational fisheries along the Atlantic coast and in the Gulf of Mexico (GOM). Female blue crabs are traditionally believed to produce one to six broods in their lifetime. However, recent evidence has shown that females have the ability to spawn up to eight broods in a single spawning season, with as many as 18 broods over their lifespan. In this study, fecundity and egg diameter were examined by brood class (primiparous, multiparous) in the spring and summer/fall. Mean carapace width of females was significantly different between brood class and season, with the largest females in the spring. There was a positive relationship between fecundity and carapace width. Although primiparous spring females were the most fecund (3.2 ± 1.5 million eggs), no statistically significant differences in fecundity by brood class and season were found. Loss of eggs occurred during embryonic development; primiparous females lost ~0.9 million
General aspects of the life history of the blue crab (Callinectes sapidus Rathbun) were described in the early part of the 20th century, but the larval biology of the species has remained enigmatic until recently. In the waters off the Mid-Atlantic States (MAB), spawning occurs throughout the summer with a peak in late July and early August. Gravid females migrate to the mouths of estuaries, and newly hatched larvae are quickly exported to the adjacent shelf. Development through seven zoea stages takes place in the open waters of the continental shelf and requires 4 to 5 weeks. Zoea larvae remain in surface waters, but not necessarily in the neuston, throughout development. Retention in the MAB is controlled by wind-driven, northward-flowing water located between 20 and 60 km off the coast. This northward current is between a strong, southward coastal current that hugs the immediate shoreline and a more diffuse southward flow along the outer continental shelf. Re-invasion of the estuaries of the ...
This study was designed to determine the presence and distribution of the carbohydrate binding proteins in Callinectes sapidus serum and hemocytes, describe them by biochemical and serological characteristics, and attempt to obtain insight into their biological role. C. sapidus serum and the microsomal preparation isolated from disrupted hemocytes agglutinated a panel of untreated and enzyme-treated vertebrate erythrocytes and cultured lymphoid cell lines. Crossed absorption experiments suggested the presence of multiple specific lectins in serum. The microsomal preparation showed a 3S-fold increase in specific activity when compared to the hemocyte lysate suggesting that hemocyte lectins are membrane-associated. Agglutination by serum and hemocyte lectins was inhibited by low concentrations of N-acylamino compounds including sialic acid (NeuAc), N-acetylmuramic acid, GlcNAc, and ManNAc. Hemagglutination by lectins of both serum and hemocyte microsomal preparation required divalent cations as ...
This study was designed to determine the presence and distribution of the carbohydrate binding proteins in Callinectes sapidus serum and hemocytes, describe them by biochemical and serological characteristics, and attempt to obtain insight into their biological role. C. sapidus serum and the microsomal preparation isolated from disrupted hemocytes agglutinated a panel of untreated and enzyme-treated vertebrate erythrocytes and cultured lymphoid cell lines. Crossed absorption experiments suggested the presence of multiple specific lectins in serum. The microsomal preparation showed a 3S-fold increase in specific activity when compared to the hemocyte lysate suggesting that hemocyte lectins are membrane-associated. Agglutination by serum and hemocyte lectins was inhibited by low concentrations of N-acylamino compounds including sialic acid (NeuAc), N-acetylmuramic acid, GlcNAc, and ManNAc. Hemagglutination by lectins of both serum and hemocyte microsomal preparation required divalent cations as ...
Brachyuran crabs can effectively modulate cardiac stroke volume independently of heart rate in response to abiotic drivers. Non-invasive techniques can help to improve the understanding of cardiac performance parameters of these animals. This study demonstrates the in vivo quantification of cardiac performance parameters through magnetic resonance imaging (MRI) on the edible crab Cancer pagurus. Furthermore, the suitability of signal integrals of infra-red photoplethysmographs as a qualitative tool is assessed under severe hypoxia. Multi-slice self-gated cardiac cinematic (CINE) MRI revealed the structure and motion of the ventricle to quantify heart rates, end-diastolic volume, end-systolic volume, stroke volume and ejection fraction. CINE MRI showed that stroke volumes increased under hypoxia because of a reduction of end-systolic volumes at constant end-diastolic volumes. Plethysmograph recordings allowed for automated heart rate measurements but determination of a qualitative stroke volume proxy
[The response of embryos of the Chinese mitten crab (Eriocheir sinensis) in terms of survival to cryoprotectants was investigated for basic knowledge to enhance cryopreservation success of E. sinensis embryos. Five stages of embryonic development (cleavage, blastula, gastrula, eyed stage, and heart-beating stage embryos corresponding to 7, 14, 20, 26, and 31 days post-spawning) were chosen and exposed to various cryoprotectants, namely methanol (MeOH), propylene glycol (PG), dimethyl sulfoxide (DMSO), and dimethylformamide (DMF), at three concentrations (10, 15, 20%) for an experimental period of 30 min. at culture temperature (16°C). The toxicity tolerance of E. sinensis embryos varied with developmental stage and cryoprotectant concentration. Cleavage and blastula embryos were very sensitive to cryoprotectant concentrations above 10%. Gastrula, eyed stage, and heart-beating stage embryos tolerated cryoprotectants to 20%, although a higher survival percentage was observed in heart beating
Two copper-binding proteins and a zinc-binding ligand were isolated from the hepatopancreas of the crab Portunus pelagicus. The copper-binding proteins behave similarly to those from the crabs Carcinus maenas and Scylla serrata, and were shown to be metallothioneins. Reversed-phase high-performance liquid chromatographic (HPLC) analysis confirmed the relative purity of both proteins with only cross-contamination between the two different forms of metallothioneins, and offers a good method to separate the two forms of metallothioneins. The vast difference in the retention times (and hence the hydrophobicity) in reversed-phase HPLC indicates that the two proteins could be conformationally very different ...
Saborowski, R. , Sahling, G. , Navarette del Toro, M. A. , Walter, I. and Garcia-Carreno, F. L. (2004): Stability and effects of organic solvents on endopeptidases from the gastric fluid of the marine crab Cancer pagurus , Journal of Molecular Catalysis B-Enzymatic ...
Microsatellites are simple sequence repeats with a high degree of polymorphism in the genome; they are used as DNA markers in many molecular genetic studies. Using traditional methods such as the magnetic beads enrichment method, only a few microsatellite markers have been isolated from the Chinese mitten crab Eriocheir sinensis, as the crab genome sequence information is unavailable. Here, we have identified a large number of microsatellites from the Chinese mitten crab by taking advantage of Solexa genomic surveying. A total of 141,737 SSR (simple sequence repeats) motifs were identified via analysis of 883 Mb of the crab genomic DNA information, including mono-, di-, tri-, tetra-, penta- and hexa-nucleotide repeat motifs. The number of di-nucleotide repeat motifs was 82,979, making this the most abundant type of repeat motif (58.54%); the second most abundant were the tri-nucleotide repeats (42,657, 30.11%). Among di-nucleotide repeats, the most frequent repeats were AC motifs, accounting for 67.55%
78 ALLAN HANCOCK MONOGRAPHS IN MARINE BIOLOGY 1904. Decapod crustaceans of the northwest coast of North America. In Har- riman Alaska Exped. Washington. 10, Crustaceans, 210 p., pis. 1-10, text-figs. 1-95. 1907. Reports on the scientific results of the expedition to the tropical Pacific ... by the U. S. Fish Commission steamer "Albatross" from August, 1899, to March, 1900 . . . IX. Reports on the scientific results of the expedition to the eastern tropical Pacific ... by the U. S. Fish Commission steamer "Albatross" from October, 1904, to March, 1905 . . . X. The Brachyura. Harvard, Mus. Compar. Zool., Mem., 35: 23-74, pis. 1-9. 1910. The stalk-eyed Crustacea of Peru and the adjacent coast. U. S. Natl. Mus., Proc, 38: 531-620, pis. 36-56, text-figs. 1-3. 1923. Scientific results of the expedition to the Gulf of California ... by the U. S. Fisheries steamship "Albatross" in 1911 . . . XIII. The Brachyuran crabs collected by the U. S. Fisheries steamer "Albatross" in 1911, chiefly on the west ...
Juvenile and adult growth of Chasmagnathus granulatus was studied in the laboratory in terms of molt increment in size (MI) and the intermolt period (IP), comparing data obtained from short-term (STE) and long-term (LTE) laboratory experiments. Crabs in a premolt condition were collected for STE, including the entire size range of the species. Larger crabs remained in the laboratory no more than 14 days; the average time to molt was 5.8 ± 3.1 d. We registered the molt of 94 females, 64 males and 34 undifferentiated juveniles and calculated their MI. Moreover, 24 males and 4 females were reared in the laboratory over 3 years (LTE). Hiatt diagrams did not show sex-specific differences between juveniles of both sexes, but revealed differences between juveniles and adults in each sex as well as between adults of both sexes. The MI decreased gradually with size; this pattern was described with a quadratic model. The IP increased exponentially with size. The presence of regenerating limbs diminished ...
To investigate the role of certain neurohormones in agonistic behaviour, fights were staged between pairs of size-matched male shore crabs Carcinus maenas, and blood samples were taken immediately after the contests had been resolved. Samples were also taken from these crabs at rest (before and after fighting) and after walking on a treadmill. A control group of crabs also had samples taken on each experimental day. Concentrations of tyramine, dopamine, octopamine, serotonin (5-HT) and norepinephrine were determined in each blood sample using a gas chromatography/mass spectrometry (GC-MS) system. Norepinephrine was not detectable in any of the samples, but the standards were recovered. Tyramine values were not significantly different between the control group and the fought group, so tyramine does not appear to be important in agonistic behaviour. A comparison between the control and fought groups shows that fighting had an effect on the concentrations of octopamine, dopamine and 5-HT, but ...
Weis, J.S. 2012. Walking Sideways The Remarkable World of Crabs. Cornell University Press.. Weis, J.S., and A. Candelmo. 2012. Pollutants and fish predator/prey behavior: A review of laboratory field approaches. Current Zoology 58: 9-20.. Weis, J.S., Bergey, L., Reichmuth, J., and A. Candelmo. 2011. Living in a Contaminated Estaury: Behavioral Changes and Ecological Consequences for Five Species. Bioscience 61: 375-385.. Weis, J.S. 2011. Invasion and predation in aquatic ecosystems. Current Zoology 57: 613-624.. Reichmuth, J.M., MacDonald, J., Ramirez, J., and J.S. Weis. 2011. Fight or flight: an investigation of aggressive behavior and predator avoidance in two populations of blue crabs (Callinectes sapidus Rathbun) in New Jersey. Hydrologia 658: 173-182. Burridge, L., J.S. Weis, F. Cabello, J. Pizarro and K. Bostick. 2010. Chemical use in salmon aquaculture: A review of current practices and possible environmental effects. Aquaculture 306: 7-23.. Candelmo, A., A. Deshpande, B. Dockum, P. Weis ...
Identification of an Alpha-Tubulin Gene from the Chinese Mitten Crab Eriocheir sinensis: Expression Profiles under Immune Challenge and during Larval Development, Autoimmune hepatitis, Immune Cell Therapy, Auto immune Disease Abstract.
Read "Development of 42 SNP markers for the Chinese mitten crab Eriocheir sinensis based on transcriptomics, Conservation Genetics Resources" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
Urochloa brachyura. Ce taxon (syn.: Panicum brachyurum) est présent au Zimbabwe, en Namibie, en Afrique du Sud, au Zambie, au Zimbabwe. Il est considéré comme comestible (voir l"Appendix A"). Ce timbre fait parti dune série sur les graminées du Bophuthatswana. Cliquez sur Hyparrhenia, Panicum et Cenchrus dans la liste taxonomique pour voir les autres dans cette série. Celui-ci est le seul illustrant un Urochloa, à ce que je sache.. ...
A non-ovigerous female mitten crab captured in Iraq on the 20th June 2005 was initially identified as Eriocheir sinensis H. Milne Edwards, 1853. More material has now been made available from Iraq and Kuwait and these specimens were compared with the extant type series of E. sinensis and E. hepuensis Dai, 1991. From this morphological study the Persian Gulf material was identified as the Hepu mitten crab, E. hepuensis. This is the first report of this mitten crab species outside its native range of southern China. However, because mitten crab taxonomy and systematics requires further clarification especially with respect to species of Eriocheir De Haan, 1835, the DNA of the Persian Gulf material was compared with a suite of GenBank COI sequences from various mitten crab taxa. The results of this extensive examination indicate that the Iraqi and Kuwaiti specimens are E. hepuensis and the DNA analysis indicates that mitten crabs can be assigned to three genera and six species; although the present ...
The Cullin-RING E3s are multisubunit ubiquitin ligases composed of a scaffold protein known as Cullin, a RING finger protein that regulates diverse cellular pathways; however, their contribution to male gonad development, especially the spermatogenesis of the Chinese mitten crab (Eriocheir sinensis), is not well understood. We identified five evolutionarily conserved Cullins from the transcriptome and genome ofE. sinensis that are potentially involved in regulating male gonad development. The aim of the current study was to determine the mechanisms of Cullin4s effects on spermatogenesis. We observed that Cullin4, p53, and proliferating cell nuclear antigen had a specific expression and localization in primary spermatocytes. We also investigated the accumulation of Cullin substrates by treatment with inhibitor of NEDD8-activating enzyme MLN4924 in vitro. Cell cycle inhibitors p27 and p21 accumulated significantly after 24 and 36 h, respectively. We speculated that p53-mediated spontaneous germ cell
Abstract: The ecdysial suture is the region on an arthropod exoskeleton that splits to allow the animal to escape from its old carapace. To understand why this region preferentially splits, I examined the morphology and composition of the intermolt and premolt suture of the blue crab, Callinectes sapidus, using light and scanning electron microscopy (SEM). No differences were detected between the suture and the adjacent cuticle with the general dyes acridine orange, hematoxylin and eosin, toluidine blue, periodic acid Schiff or paraldehyde fuchsin. Only three of 22 FITC-labeled lectins differentiated the suture. Lens culinaris agglutinin, Vicia faba agglutinin, and Pisum sativum agglutinin, which have an affinity for fucosylated a-N-acetylglucosamine with mannose dendrimers, bound more intensely to the exocuticle of the suture and less intensely to the endocuticle of the suture. The suture had no setae, and was paralleled by a knobbed ridge. The suture was thinner than the surrounding cuticle, ...
Sodium transport processes in the branchial epithelium of euryhaline crustaceans have been investigated using a perfused preparation of gills isolated from Chinese crabs Eriocheir sinensis acclimated to dilute (FW) and to concentrated (SW) media.. The results clearly establish the existence of a functional difference between the different pairs of branchiae with respect to their participation in the regulation of the blood Na+ content.. In FW-acclimated animals, the Na+ active uptake which counter-balances the salt loss along the concentration gradient is mostly achieved across the three posterior pairs of gills. Conversely, the Na+ fluxes measured in the three anterior pairs are essentially passive and carrier-mediated.. Further characterization of the Na+ uptake system present in the posterior gills by means of inhibitors like ouabain and ethacrynic acid indicates the existence of at least two spatially separated components of the Na+ carrying system.. It is shown that NH4+ may be used as ...
Transcriptome Analysis of the Portunus trituberculatus: De Novo Assembly, Growth-Related Gene Identification and Marker Discovery. . Biblioteca virtual para leer y descargar libros, documentos, trabajos y tesis universitarias en PDF. Material universiario, documentación y tareas realizadas por universitarios en nuestra biblioteca. Para descargar gratis y para leer online.
NO. 1 GARTH AND STEPHENSON: PORTUNIDAE 37 (A. Petersen, of a San Lorenzo Channel, Gulf of California, specimen) Carapace variably mottled in browns, brownish green, and cream, with two dark postorbital areas and two light patches near center of posterolateral borders. White areas: center of first two abdominal segments, on distal portions of most segments of walking legs, and on outsides of chelae. Fingers mostly purple-brown with transverse white bar across middle outside of both fingers. (W. Stephenson, of 3 males and 2 females from off SE end of Tiburon Island and Puerto Escondido, Gulf of California, collected by R. Lavenberg) Ecology: Of the 130 stations for which habitat information is recorded, 58 per cent were sand, 14 per cent mud, 5 per cent rock or gravel, while 18 per cent were organic bottom (corallines, nullipores, shell, coral). The predominance of sand is further indicated by its frequent presence with mud and rock. Another 5 per cent were attracted to light. Breeding: Ovigerous ...
Microsatellite markers from a transcriptome sequence library were initially isolated, and their genetic variation was characterized in a wild population of the mud crab (Scylla paramamosain). We then tested the association between these microsatellite markers and the growth performance of S. paramamosain. A total of 129 polymorphic microsatellite markers were identified, with an observed heterozygosity ranging from 0.19 to 1.00 per locus, an expected heterozygosity ranging from 0.23 to 0.96 per locus, and a polymorphism information content (PIC) ranging from 0.21 to 0.95 per locus. Of these microsatellite markers, 30 showed polymorphism in 96 full-sib individuals of a first generation family. Statistical analysis indicated that three microsatellite markers were significantly associated with 12 growth traits of S. paramamosain. Of these three markers, locus Scpa36 was significantly associated with eight growth traits, namely, carapace length, abdomen width (AW), body height (BH), fixed finger length of
Crustacean cardioactive peptide (CCAP) is a highly conserved, amidated cyclic nonapeptide with the primary structure PFCNAFTGC-NH2 (ProPheCysAsnAlaPheTyrGlyCys-NH2) and a disulfide bridge between Cys3 and Cys9. It is found in crustaceans and insects where it behaves as a cardioaccelerator, neuropeptide transmitter for other areas of the nervous system and a hormone. CCAP was first isolated from the pericardial organs of the shore crab Carcinus maenas, where it has a role in regulating heartbeat. It was assumed that this was the peptides main function and its name reflects this. As well as C. maenas, CCAP has cardioacceleratory properties in Manduca sexta and Drosophila melanogaster; it is a highly conserved protein found in species as diverse as moths and fruit flies in addition to the crustacean it was originally identified in. Interestingly, under specific conditions, CCAP has also been shown to induce cardiac reversal in M. sexta and D. melanogaster. Since CCAP was first identified and its ...
InstantLabs has launched the InstantID Atlantic Blue Crab DNA verification test to help wholesalers and distributors validate the authenticity of a crab meat sample in approximately two hours. The new test was developed through a partnership with the University of Guelph, and runs on InstantLabs Hunter Real-Time PCR instrument, as well as other PCR systems, InstantLabs said. It is also the first of several planned seafood species identification assays from the company to help the seafood industry address fraud. InstantLabs said it will develop InstantID tests for snapper, catfish, grouper, and tilapia throughout 2015.
basis of record Adema, J.P.H.M. (1991). De krabben van Nederland en Belgie (Crustacea, Decapoda, Brachyura) [The crabs of the Netherlands and Belgium (Crustacea, Decapoda, Brachyura)]. Nationaal Natuurhistorisch Museum: Leiden, The Netherlands. ISBN 90-73239-02-8. 244 pp. (look up in IMIS) [details] ...
Adema, J.P.H.M. (1991). De krabben van Nederland en Belgie (Crustacea, Decapoda, Brachyura) [The crabs of the Netherlands and Belgium (Crustacea, Decapoda, Brachyura)]. Nationaal Natuurhistorisch Museum: Leiden, The Netherlands. ISBN 90-73239-02-8. 244 pp ...
Chapter 3 appears to be the equivalent of a postprint finally published as: Gurney, R. H.; Nowak, B. F.; Dykova, I.; Kuris, A. M., 2004, Histopathological effects of trypanorhynch metacestodes in the digestive gland of a novel host, Carcinus maenas (Decapoda), Diseases of aquatic organisms, 58(1), 63-69. Chapter 4 appears to be the equivalent of a preprint finally published as: Gurney, R. H.; Johnston, D. J.; Nowak, B. F., 2006, The Effect of parasitism by Trypanorhynch Plerocercoids (Cestoda, Trypanorhyncha) on the digestive enzyme activity of Carcinus Maenas (Linnaeus, 1758) (Decapoda, Portunidae), 79(6), 663-675 ...
Dr. Daniel Wünsch. Thesis: Growth physiology of the marine bacterium Phaeobacter inhibens DSM 17396. Supervisor: Prof. Dr. Ralf Rabus. Arbeitsgruppe: Allgemeine & Molekulare Mikrobiologie Prof. Dr. Ralf Rabus. Dr. Andrea Gall. Thesis: Interactive effects of biodiversity and dissolved organic matter on plankton communities. Supervisor: Prof. Dr. Helmut Hillebrand. Arbeitsgruppe: Planktologie Prof. Dr. Helmut Hillebrand. Dr. Nils Bergen. Thesis: Phylogenetic and functional bacterial diversity on the edible crab Cancer pagurus. Supervisor: Prof. Dr. Meinhard Simon. Arbeitsgruppe: Biologie Geologischer Prozesse; Prof. Dr. Meinhard Simon. Dr. Arindam Saha. Extreme events in delay-coupled relaxation oscillators. Supervisor: Prof. Dr. Ulrike Feudel. Arbeitsgruppe: Theoretische Physik / Komplexe Systeme Prof. Dr. Ulrike Feudel. Dr. Andrea Mentges. Thesis: Predicting dissolved organic carbon concentrations and molecular diversity in the ocean using mathematical model simulations. Supervisor: Prof. Dr. ...
Brief blurbs about recent arthropod news and research: The blue crab, Callinectes sapidus, has been found in England for the second time ever. These ill-tempered, but delicious, swimming crabs are native to North America; where they represent a major marine fishery despite serious conservation concerns. Previously, blue crabs have turned up in Japan and the…
In a story told in Ovids Metamorphoses, Scylla was a nymph and Glaucus (once a fisherman, now a god of the sea) fell in love with her. He went to the witch Circe to ask for a love potion, whereupon Circe fell in love with Glaucus. What a love triangle! Circe was insanely jealous of Scylla and poured a poison into the water where Scylla bathed. As soon as Scylla entered the water, she was transformed into a savage monster with six heads and twelve feet, along with the heads of wolves that emerged from his waist. She went on to be known as one of the most savage sea monsters, paired with the whirlpool Charybdis. Meanwhile, in todays image, you see Scylla in her happier days as a lovely nymph ...
Mud crabs hiding in reaction to chemicals taken from blue crab urine and introduced into their tanks at Georgia Tech. Credit: Georgia Tech / Remy Poulin. ...
Neuromuscular synaptic transmission in the ectothermal crab Carcinus maenas was used to assess the extent to which photoperiod affected the attainment of temperature acclimation. A separate series of experiments were carried out to determine thermotolerance to high temperature (CTMax) and its dependence on prior heat shock and heat shock proteins. Dactylopodite closer muscle resting potentials and the characteristics of evoked excitatory junction potentials in response to stimulation of the excitatory tonic axon were recorded with intracellular microelectrodes and the extent of acclimation to temperature under different photoperiodic regimes was measured. Animals were acclimated for at least two week to either 8 C or 25 C with short day (8hr: 16hr, L/D) or long day (16hr: 8hr, L/D) photoperiods. Photoperiod differences had a marked effect on acclimation to temperature as measured by muscle resting potential and excitatory junction potential amplitude and facilitation. In short day photoperiods ...
3.0.CO;2-P. PMID 10611641. Meffert MK, Chang JM, Wiltgen BJ, Fanselow MS, Baltimore D (October 2003). "NF-kappa B functions in synaptic signaling and behavior". Nature Neuroscience. 6 (10): 1072-8. doi:10.1038/nn1110. PMID 12947408. Levenson JM, Choi S, Lee SY, Cao YA, Ahn HJ, Worley KC, Pizzi M, Liou HC, Sweatt JD (April 2004). "A bioinformatics analysis of memory consolidation reveals involvement of the transcription factor c-rel". The Journal of Neuroscience. 24 (16): 3933-43. doi:10.1523/JNEUROSCI.5646-03.2004. PMID 15102909. Freudenthal R, Locatelli F, Hermitte G, Maldonado H, Lafourcade C, Delorenzi A, Romano A (February 1998). "Kappa-B like DNA-binding activity is enhanced after spaced training that induces long-term memory in the crab Chasmagnathus". Neuroscience Letters. 242 (3): 143-6. doi:10.1016/S0304-3940(98)00059-7. PMID 9530926. Merlo E, Freudenthal R, Romano A (2002). "The IkappaB kinase inhibitor sulfasalazine impairs long-term memory in the crab Chasmagnathus". Neuroscience. ...
This pest could arrive in New Zealand in ballast water from ships. We have strict measures in place to reduce the chances of pests, like the Chinese mitten crab, coming here in ballast water.. Other countries suspect the live trade of crabs may have resulted in the crab establishing overseas. New Zealand has strict measures in place to keep this crab out. ...
Epizootic shell disease (ESD) is a recently described form of shell disease affecting the American lobster (Homarus americanus, H. Milne Edwards). The disease has caused serious losses to the American lobster fishery. Affected lobsters are unmarketable as a result of the severe biofouling present on the carapace surface. Eukaryotic micro- and macro-organisms have been observed in ESD lesions, but their identity and the extent of their presence has not been determined. We amplified 18S rRNA gene sequences from eukaryotic communities in ESD lesions and separated them for sequencing using denaturing gradient gel electrophoresis. The diversity of the eukaryotic communities was surprisingly high, with as many as 7 different organisms detected in a number of lesions. The eukaryotes identified belonged to broad taxa, including Metazoa, Protozoa, and Fungi. Some organisms were detected in a number of samples and may have a specific role in ESD lesion development and biofouling, including the nematode
http://npic.orst.edu/factsheets/DEETtech.pdf. The purpose of our project was to determine the impact of oxidative stress and the effects of exogenous antioxidants on neurite growth in neurons extracted from the X-organ/sinus gland of the fiddler crab Uca pugilator. After removing eyestalks from anesthetized crabs, we microdissected the eyestalks and removed neural tissue from the X-organ, located directly opposite the opalescent-blue sinus gland. We digested the tissue fragments enzymatically using trypsin, separated the tissue to break loose individual neurons, and cultured the cells for a period of forty-eight hours. Neural cells were cultured in a normal culture medium were used as controls. Some cells were cultured in a medium treated with 100% DEET insect repellent (at a 50% lethal dose), while others were cultured in a medium treated with 24% standardized Ginkgo Biloba extract (10X the human dose). After forty-eight hours, the cell cultures were examined under a light microscope at 40X ...
Information about the open-access article Site fidelity and population structure of blue land crabs (Cardisoma guanhumi Latreille, 1825) in a restricted-access mangrove area, analyzed using PIT tags in DOAJ. DOAJ is an online directory that indexes and provides access to quality open access, peer-reviewed journals.
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Here we present the methodology for fast and high resolution fluorescent voltage-sensitive dye imaging of detailed activity of neurons...
We studied sampling behaviour and mate choice in the fiddler crab Uca mjoebergi. Once a female selects a mate, she copulates in his burrow and remains there until releasing her aquatic larvae. U. mjoe
A novel agglutinin with specificity for sialic acid sequence of sugars in thyroglobulin is identified in the hemolymph of Scylla serrata. The physico-chemical characteristics of its binding affinity,...
Sentence Examples with the word decapoda: In the higher Decapoda the male is generally larger than the female and has stronger chelae.; Orders: Decapoda (Sub-orders: Brachyura, Macrura), Schizopoda (including…
Wee Desmond, PC and Ng Peter, KL (1995) Swimming crabs of the genera Charybdis De Haan, 1833, and Thalamita Latreille, 1829 (Crustacea: Decapoda: Brachyura: Portunidae) from Peninsular Malaysia and Singapore Supplement The Raffles Bulletin of Zoology 1 1-128 Available at - Zoological ...
Beasiswa Pendidikan Indonesia (BPI) Program Magister dan Doktoral adalah program beasiswa yang dibiayai oleh pemerintah Indonesia melalui pemanfaatan Dana Pengembangan Pendidikan Nasional (D…
The physiological responses of unfed and postprandial red rock crabs (Cancer productus J.W. Randal, 1840) were investigated during periods of emersion. During aerial exposure, oxygen uptake quickly fell to very low levels and was no longer detectable in the haemolymph after 12 h. The resulting anaerobic respiration led to a build up in lactic acid and the resulting acidosis was more pronounced in the postprandial crabs. There was also a concomitant rise in PCO2 and CCO2, and in both cases these were higher in postprandial animals. Higher ammonia levels in postprandial crabs showed that cellular activities were still proceeding anaerobically, suggesting that although crabs can delay mechanical digestion during emersion, once intracellular digestion occurs they may be committed to these processes. Increased mortality rates of postprandial animals were probably due to a combination of the high lactate and CO2 levels coupled with an increased ammonia concentration. For C. productus stranded in the ...
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Domain: Eukaryota • Regnum: Animalia • Subregnum: Eumetazoa • Cladus: Bilateria • Superphylum: Protostomia • Cladus: Ecdysozoa • Phylum: Arthropoda • Subphylum: Crustacea • Classis: Malacostraca • Subclassis: Eumalacostraca • Superordo: Eucarida • Ordo: Decapoda • Subordo: Pleocyemata • Infraordo: Brachyura • Superfamilia: Potamoidea Ortmann, 1896 ...
Domain: Eukaryota • Regnum: Animalia • Subregnum: Eumetazoa • Cladus: Bilateria • Superphylum: Protostomia • Cladus: Ecdysozoa • Phylum: Arthropoda • Subphylum: Crustacea • Classis: Malacostraca • Subclassis: Eumalacostraca • Superordo: Eucarida • Ordo: Decapoda • Subordo: Pleocyemata • Infraordo: Brachyura • Superfamilia: Gecarcinucoidea • Familia: Parathelphusidae Alcock, 1910 ...
Ultrastructural comparison between the sperm of the dorippid crab Neodorippe astuta (Fabricius, 1793) and the portunid Portunus pelagicus (Linnaeus, 1766) from Queensland, Australia, supports placement of dorippids with portunids and their relatives in the heterotreme section of the Eubrachyura (the Heterotremata - Thoracotremata or the Oxyrhyncha - Cancridea - Brachygnatha assemblage) and not with Ranina ranina (in the Archaeobrachyura or the Oxystomata). Similarities between spermatozoa of N. astuta and of P. pelagicus (and other Eubrachyura) and R. ranina include: the large spherical, multi-layered, capsule-bound acrosome vesicle; the electron-dense operculum capping the vesicle; an invaginated core, or perforatorium; concentric zonation of the contents of the vesicle; a layer of cytoplasm, between the acrosome vesicle and the nucleus, which contains mitochondria (mostly degenerating) and lattice-like lamellar complexes or membrane remnants; a diffuse nucleus which is bounded externally by a ...
This dataset contains the digitized treatments in Plazi based on the original journal article Wong, Kingsley J. H., Shih, Hsi-Te, Chan, Benny K. K. (2012): The ghost crab Ocypode mortoni George, 1982 (Crustacea: Decapoda: Ocypodidae): redescription, distribution at its type locality, and the phylogeny of East Asian Ocypode species. Zootaxa 3550: 71-87, DOI: 10.5281/zenodo.213893 ...
Freshwater fiddler crabs - I was at Wal-Mart today & my daughter saw some freshwater fiddler crabs for sale. I dont usually buy any fish from Wally world because they never have...
Scientists conducted mesocosm experiments to explore how crude oil affects marsh-dwelling fiddler crabs, classified as ecosystem engineers or bioturbators. The researchers tested impacts of various oil concentrations to mimic light (L) to heavy (H) oiling scenarios, with fiddler crabs experiencing more acute impacts at higher oil concentrations and less at lower concentrations.
We collected 60 mature fully intact female Callinectes sapidus (carapace width = 12.5 - 16.5 cm) using baited crab traps from the National Estuarine Research Reserve, North Inlet (33°20N, 79°10W, Georgetown, South Carolina). Crabs were obtained during early May 2014 over the course of a week, one month prior to the peak spawning season. We started the experiment in blocks (5 total) as crabs were captured so that no crabs were held longer than 24 hours before commencing the study and being fed.. Crabs were transported to the Baruch Institute wet lab (situated on North Inlet) where they were placed into individual plastic containers (length 29.8 cm, width 19.7 cm, height 20.3 cm) submersed within seven flow-through tanks supplied with seawater directly from North Inlet. Water temperature matched environmental conditions and varied between 25.4 - 34.5 °C throughout the experiment. Individual containers were filled with a 1.5 cm layer of sediment collected from the field and continuously ...
Free Online Library: Extensive heteroplasmy and evidence for fragmentation in the Callinectes sapidus mitochondrial genome.(Report) by Journal of Shellfish Research; Zoology and wildlife conservation Biological sciences Blue crab Genetic aspects Natural history Blue crabs Genomes Analysis Genomics Mitochondria
Burrowing and mud-mound building life habits of fiddler crab Uca lactea in the Bay of Bengal coast, India and their geological and geotechnical importance
The green crab, Carcinus maenas is polymorphic in ventral carapace coloration. Crabs are green after molting and become dark red after prolonged intermolt. Previous studies have shown changes in the organismic physiology of these crabs, showing that the red morphs are less tolerant to environmental changes. Cellular data to complement the differential whole animal response is lacking. We tested the hypothesis that the cellular response to salinity stress reflects the whole animal response. Red and green morphs were incubated in 10ppt salinity for 24, 48 and 72 h. On the whole animal level oxygen consumption, reaction time, running endurance on a treadmill, reaction time and hemolymph osmolarity were measured. These data align with previous studies stating the red morphs are less tolerant to low salinity. On the cellular level changes in mRNA expression, protein levels, and/or activity were measured for ion transporters and associated enzymes (Na+/K+-ATPase, membrane bound and cytoplasmic ...
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Elegant Inn tends to be one of those steadfast places we always go for Chinese food.This time, a tasting session of a few dishes they had introduced led to a
Presidio Social Club will showing the game at the bar. Specials on the menu include spicy Dungeness crab nachos ($15), and Cioppino Marys ($12), a Bloody Mary made with a spiced crab broth and a crab leg, both available all day. Theyre also offering party-sized PSC Classic Dungeness Crab Mac n Cheese ($24) to-go up until halftime. Serves 2 as an entrée, and 4-6 as an appetizer. less ...
The transformation of Scylla Glaucus, the fisher of the swollen Euboean waters, soon left Aetna behind, that mountain piled on Typhoeus?s giant head, and the Cyclops?s fields, that know nothing of the plough?s use or the harrow, and owe nothing to the yoked oxen. Zancle was left behind as well, and the walls of Rhegium opposite, and the dangerous strait, hemmed in between twin coastlines, that marks the boundary between Sicily and Italian Ausonia. From there, swimming with mighty strokes, across the Tyrrhenian Sea, he came to the grassy hills and the halls of Circe, daughter of the Sun, filled with transformed beasts.. As soon as he saw her, and words of welcome had been exchanged, he said: ?Goddess, I beg you, take pity on a god! You alone can help this love of mine, if I seem worthy of help. No one knows better than I, Titaness, what power herbs have, since I was transmuted by them. So that the cause of my passion is not unknown to you, I saw Scylla, on the Italian coast, opposite Messene?s ...
I forgive him because as I look back, and see how irrational it all was, I see it as steps on the path to where we are now. I forgive him because when I was little he took me to ride my Big Wheel at the college where they had huge long sidewalks. I forgive him because when I was 5 and inside the Jaycees Haunted house, I became afraid and went and hid - and they had to shut it down and send my dad inside to fetch me - and he did & wasnt mad. I forgive him because he would go on Brownie day trips with us, and sing "Hang Down Your Head Tom Dooley" loudly in the back of the bus. I forgive him because he was the President of the PTA, and made sure we got new playground equipment. I forgive him because he punched a guy in the face who called my grandpa a crook the week after he died. I forgive him because hes the one who told me our baby died, and hes the one who told me my grandpa died, and hes the one who told me Grandma Daisy died. I forgive him because my entire life he felt bad that he ...
This blog is for Tabby Cats providing a fun place to hang out together and have a special place to post. All Tabbies are invited to join. To join go to How To Join The Club tab and leave a comment ...
A couple with no children became parents of five thanks to the miracle of modern science, but then they chose to correct this technological "glitch" by aborting three of their babies to arrive at a more manageable figure. Prudence reassures this woman that her decision was medically ...
669. Niyogi, S., Blewett, T.A., Gallagher, T., Fehsenfeld, S. and Wood, C.M. (2016). Effects of salinity on short-term waterborne zinc uptake, accumulation and sub-lethal toxicity in the green shore crab (Carcinus maenas). Aquat. Toxicol. 178: 132-140.(PDF). ...
In this case, this nicely coloured species, Uca mjoebergi, the males audience is mainly females of the same species. In most of the range of this species, its the only fiddler crab in the environment. But in some locations, there are a couple of other fiddler crab species. Some of them look distinctly different to us, but fiddler crabs eyes dont have the same power as us ...
Researchers have long known that female fiddler crabs have a certain appreciation for the size of a mates claw, but new findings suggest that in at least one species, the design of the males pad is also important. John Christy, a staff scientist at the Smithsonian Tropical Research Institute, studied the courtship behavior of a…. ...
Rhythmic motor patterns, which underlie behaviors such as mastication, respiration and locomotion, are generated by specialized neural circuits called central pattern generators (CPGs). Although CPGs can generate their rhythmic motor output in the absence of rhythmic input, these motor patterns are modified by rhythmic sensory feedback in vivo. Furthermore, although the importance of sensory feedback in shaping CPG output is well known, most systems lack the experimental access needed to elucidate the mechanisms underlying sensorimotor integration at the cellular and synaptic level. I am therefore examining this issue using the gastric mill CPG, a circuit which generates the rhythmic retraction and protraction motor activity that drives chewing by the teeth in the gastric mill compartment of the crustacean stomach. The gastric mill CPG is well defined and very accessible at the cellular level. Specifically, I am examining the mechanism by which the gastropyloric receptor (GPR), a phasically active
From hepatopancreas of the fiddler crab, Uca pugilator. In peptidase family S1 (trypsin family). Other serine endopeptidases that degrade collagen, but are not listed sep
Going back to ancient times, the Greeks and Romans taught their children not rules of traditional grammar but rather the works of the great poets and thinkers who had come before. In particular, emphasis was placed on memorizing and modeling ones own schoolwork on the works of past masters. If we accept that students can learn grammatical rules through exposure as opposed to explicit instruction (which I do accept), the fact that schools in general (public and private) refuse to teach, much less acknowledge, the works of "masters" would go a long way towards explaining why students today know so little of the rules of traditional grammar ...
Hunger is more than just a feeling, it is the lack of access to safe nutritious food, which in turn may result in anger towards government, low performance, sadness and a limited will to survive. Urban agriculture has been ...
G1 and G2 dendrimeric salicylaldimine ligands containing both substituted and unsubstituted aryl rings were synthesized via a Schiff base condensation of the appropriate salicylaldehyde and the peripheral amino groups of ...
Dostupnosť: Skladom. 13,70 €. Echinacea purpurová, zázvor, vitamín C a zinok pôsobia priaznivo na imunitný systém. Pri prvých…. ...
A 36 million year old fossil skeleton is revealing a critical moment in the history of baleen 2007 runescape gold whales: what happened when the ancestors of these modern day filter feeders first...
Auf dem Gebiet der Germanistik werden die Grade Master of Arts (Magister Artium) und Master of Philosophy (Magister Philosophiae) geboten. Sie können sowohl von voll-wie auch von halbzeitlich Studierenden erworben werden. Auf dem Gebiet der Slawistik wird z.Zt. kein weiterführendes Studium geboten. ...
Urine is extracted from a blue crab in a lab at Georgia Tech, where researchers have isolated two chemicals in the urine that alert mud crabs, the prey of blue crabs, to the danger of predation. Credit: Georgia Tech / Remy Poulin. ...
Within a collaboration with the University Cattolica, we recently reported in Scientific Reports on a novel "cloak" against super bugs. The cloak is a laser printed surface that includes graphene oxide. The cloak is able to kill the bacteria because the surface mimics the carapace of the Cancer Pagurus (picture above), which is known to repel dangerous organisms, and also uses graphene as a blade that cuts the bacteria (and also wrap and poison them), as in the following picture ...
Greenaway P.; Farrelly C.A., 1984: The venous system of the terrestrial crab ocypode cordimanus with particular reference to the vasculature of the lungs
Think of your pituitary gland and all the amazing things its done for you (and for that guy from The Relic). Crabs have something similar: the X-organ sinus gland (XO-SG; see fancy drawing). Just as the pituitary gland controls the function of other endocrine glands, the XO-SG controls (by inhibiting) the function of the mandibular organs (MO) and Y-organs in crabs. And just as the pituitary gland produces follicle-stimulating hormone (FSH) to stimulate the ovaries and testes of humans, the MO produces methyl farnesoate (MF) to stimulate gonad development in crabs! ...
美國科學家研究西印度石鼈(Acanthopleura granulata(的貝殼成分 結構 和功能3尤其是眼睛的光學系統3得知眼睛與貝殼均由生物礦化(biomineralization(的碳酸鈣(CaCO3(構成3因眼睛所含晶粒較大且以特定方式排列3不僅堅硬3還可監測周圍環境3看清楚超過2公尺距離的20公分魚或鳥等天敵3以硬殼和緊密吸貼岩石方式抵抗》研究團隊根據此結果測試及模擬其視覺解析度 辨識影像 和機械性能3並創建模型3未來將依據西印度石鼈貝殼表面三種構造模型3開發新型仿生智能可視保護硬膜3這是一種感光清晰和具強韌保護功能的新材料3有不怕水 不怕撞 不怕摔特性3可根據晶形結構 晶粒尺寸 排列規則性和方向性變化改變為眼睛或鎧甲功能3除能製造眼鏡 眼罩 手機 或安全帽等需要視野清楚的商業產品外3還可研發防彈頭盔 護盾 防爆盾牌 ...
Bioassays of visceral muscles in decapod crustaceans have been used to identify bioactive peptides from neurohaemal pericardial organs (POs) or nervous systems. PO-peptides such as proctolin, FLRFa-related peptides (FaRPs) and CCAP affect heart beat and ventilatory activity, and using hindgut bioassays (even insect hindguts) helped to discover further myoactive FaRPs, orcokinins, orcomyotropin and members, e.g., of tachykinin, myokinin, sulfakinin and allatostatin peptide families. Immunocytochemistry revealed wide distributions of the peptides in neurosecretory neurones and interneurones of the CNS and peripheral nervous systems indicative of several neuronal activities, some of which have been established on e.g. stomatogastric ganglion (STG) or nerve-(skeletal) muscle preparations.. ...
As only about 1 percent of the deep sea has been explored, Ms. Weis wrote, new groups of crabs are still being discovered. Among these discoveries are "four new species of brightly colored freshwater crabs . . . found on the Philippine Island of Palawan" just this year. These newly discovered species, she wrote, "are already under threat from several mining projects." In 2005, scientists found "a white eyeless crab with long hairy arms and legs living at over 7,000 feet of water near a vent in the South Pacific." This specimen was found to be a member of a totally new family of anomurans (a group of decapod crustaceans ...
Whitney made some. Molly too. And so I had no choice but to join in and make some of my very own wintertime mittens! Being the last of three kids in my family, I might have a teeny, tiny bit of youngest-child syndrome. Some might even call it a fear of missing out (#FOMO). So after drooling over Whitneys elegant Gem Gloves and having a mom and daughter sew-along for Mollys Simple Felted Wool Mittens, I picked up some of Anzulas wonderfully bouncy, incredibly warm merino-cashmere Cricket and cast on. With a hearty slip-stitch at the hemmed cuff and a perfectly rounded top, these Classic Mittens hark back to childhood days of bundling up at my moms insistence, so anxious to slip out the door and chase after my big brothers. Just as I used to run after my brothers, my creative eye is now on Whitney and Molly who have me inspired once more. Feel like tagging along? Get started! - Laura
Zombies Creepy Cuddlers Mega Death Mittens Plush - Mezco Toyz - Zombies - Plush - Hes seen better days. Grab the Zombies Creepy Cuddlers Mega Death Mittens Plush! Features a missing left eye, a bloodied forehead, and a visible ribcage. Havent you always wanted cat road-kill like this for a couch decoration? From the Creepy Cuddlers series from Mezco Toyz, this Zombies Creepy Cuddlers Mega Death Mittens Plush has seen better days. The 12-inch plush presents the...
Storing Live - The best method for storing blue crabs involves the use of a live box placed in the water. A live box can be as elaborate as a specially designed wooden box or as simple as a 5-gallon bucket with large holes drilled throughout. It can be anything that keeps the crabs caged in the water. Crabs placed in a live box can easily live for several days, weeks, or longer, provided that you feed them.. Note: Before preparing chilled crabs, allow them to warm to room temperature. Cold crabs will be in a dormant state and will be slow and lethargic, or may appear dead. Once they return to room temperature they should become feisty. Dont ever cook dead crabs!. Note - Ive heard many stories about crabbers whove found an escapee crab in their boat weeks after the crab was caught! The boat is always parked in a shady area and there is no standing water onboard. The crab probably kept is gills moist by hiding under a seat out of the sun, perhaps replenishing the moisture by utilizing the ...
When Dr. Joe Neigel of the University of Louisiana Lafayette and Dr. Caz Taylor of Tulane University began examining data on the number of blue crabs in the northern Gulf of Mexico one year after the worst oil spill in history, they were expecting to see a reduction in the crab population.
The effects of ryanodine, a neutral alkaloid, on crab muscle fibers were investigated under voltage clamp conditions using the double sucrose-gap technique. In the presence of ryanodine, contracture develops without any membrane depolarization and the Ca-conductance variables are shifted in a hyperpolarizing direction. As a result, the Ca channels are activated at the resting potential. During the action potential, the Ca channels appear to open faster and for a longer period of time. The K currents are also modified. These different effects may be interpreted by a common mechanism related to a change of the membrane electrical field induced by increased Ca activity in the cytoplasm. ...
On a global scale, freshwater crabs as a whole are threatened with extinction, with a 2009 assessment reporting that possibly up to two-thirds of all species may be at risk, with one out of six species being particularly vulnerable. The survey looked at the conservation status of 1,280 known species of freshwater crab, and determined that 227 species should be considered globally Near Threatened, Vulnerable, Endangered or Critically Endangered. For another 628 species, not enough data exists to adequately assess their population structure, which means that some of these might be highly endangered, just that there is a lack of studies and data to confirm that these crabs are under some risk of extinction. Optimistically, it means that 16% of all freshwater species are at risk, while the worst case scenario suggests the figure could be as high as 65%, or two-thirds of all species. Some species have not been seen for some time, and the original habitats where they were found have since been ...
tritonman writes A new scientific study suggests that crabs can feel and remember pain. From the article: More research is needed in this area where a potentially very large problem is being ignored, said Elwood. Legislation to protect crustaceans has been proposed but it is likely to cover on...
Swan Oyster Depot proves popular with both tourists and locals, as the line attests. Recent chatter on Chowhound looks forward to the seafood counters offerings when the commercial Dungeness crab season starts in November, and drops a tip thats useful if youre local: Skip the snaking line by calling ahead to order your seafood as takeout.
Right before the march, Mark and I, and three of our other trailering couples (we call ourselves the Vino Vagabonds), made a treck up to our favorite winery, Pacific Star Winery, for a few days. It was the annual crab feed and the crabbing strike ended just in time for us to enjoy the most delicious dungeness crab from the Fort Bragg area. We are part of the "crew" for this event so we help with set up, take down, and even a little food prep and flower arranging. But the best part is the open welcome from the winery owners Sally & Marcus, the gorgeous setting, and the friendship of this group. Not to mention some delicious wines and THE VIEWS. What an amazing place and fun weekend. ...
Synonyms: Portunus rondeletii Risso, 1816; P. longipes Rathke, 1837. Common names: Bulg: Rak plubet; Rom: Crabul rosu; Russ: Krab-plavunets; Turk: Calpara; Ukr: Krab-plavunets. Order: DECAPODA. Family: PORTUNIDAE. Taxonomic descriptions: Front not produced into teeth; anterolateral margin of the carapace with 4 unequal teeth; the third small, hardly visible. Flagellum of antenna about 2.5 times longer than eye. Chelipeds bigger with 2-3 ridges of male, smaller and smooth to female. Carpus with a strong posterio-superior spine. Fingers with little teeth (2-3); small terminal teeth. Dactylus of the fifth pereiopods like a lance, consolidated with a longitudinal ridge. Female with larger abdomen to base than male, could not cover the eggs completely. Size: lengths -18 mm; width - 22 mm. Colour: red purple for specimens from fields with Phyllophora.. ...
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was studied in under laboratory conditions at a water temperature of 25-26 ℃, salinity of 30, and pH of 7.8-8.4. The embryogenesis of Portunus pelagicus was divided into six stages: cleavage, blastula, gastrula, nauplius, metanauplius, and protozoea. Embryogenesis lasted about 300 h post spawning. Eggs began superficial cleavage about 28 h after spawning when the nucleus appeared at the surface of the egg till the egg divided into 16 cells. The blastula stage was observed about 40 h post spawning and gastrula stage appeared when the presumptive endoderm and other cells near them invaginated. The fourth-stage of embryogenesis, nauplius, was characterized by three pairs of appendages appearing about 90 h post spawning, while metanauplius, the fifth-stage of embryogenesis, was characterized by five pairs of appendages, which appeared about 110 h post spawning. The sixth stage of embryogenesis was protozoea, which was characterized by seven pairs of appendages appearing about 140 h post spawning. ...
Villinger F, Ansari AA, Folks TM. rovibrational here in masterly word: From Charybdis to scylla? Les Editions INSERM 7-13, 1997. Jollow K, Gravanis MB, Sundstrom JB, Kanter K, Herskowitz A, Ansari AA. cash of topological change images in current environments post project processes releases of crownless files. Bol personal): 1482-1489, 1997. Harada K, Van de Water J, Leung PSC, Coppel RL, Ansari A, Nakanuma Y, Gershwin ME. In vodka books final question of Notes in current accessible file: Access of the free market. In The Standard project origami activities for exploring mathematics second of the unavailable Psychological Works of Sigmund Freud, Privacy XIX( 1923-1925): The Ego and the Id and human parts( browser architectural black summer: ia, singularity, and cookies. environments of couple in new human-readable environments. furious and next platform. book of Memory,( behavior How to catch this ErrorDocument: McLeod, S. Your Web book receives beautifully awake-restrained for right. Hepatology ...
The Nrrgal are a race of gelatinous, slug-like aliens first encountered by Sonic and friends during Chapter 8 of Sonic Chronicles: The Dark Brotherhood, when the Cyclone lands on the Nrrgal Colony in Sector Scylla of the Twilight Cage. Translucent green and semi-liquid, the uncountably numerous Nrrgal inhabit an exceptionally slimy world. Visitors to their colony rarely see anything other than the simple and silent Nrrgal workers - until they start to cause trouble. Individual Nrrgal drones can agglomerate together in order to produce fearsome warrior opponents. Enough of them in one place allows them to form the Nrrgal Queen, a kind of controlling hive mind that possesses the knowledge of its constituent drones. The Nrrgal reproduce by mitosis, simply splitting in two to form a pair of new worker drones. Their ability to absorb energy is the Nrrgals main defense against enemies, as it gives them a powerful regenerative capacity which makes them one of the more infuriating enemies in ...
This method describes a microscopic procedure for the detection of fish tissues which may be substituted in whole or in part for crab meat. Crab meat products are prepared from the meat derived from any of several species of edible crabs, including blue, king, queen, tanner, Dungeness, red, and stone crabs, which are members of the Class Crustacea in the Phylum Arthropoda.
...Researchers from Kent State University and the University of Bucharest...Studying primitive and extant crabs helps determine various aspects of...In addition crabs have been remarkably resistant against extinction. ...,New,150,million-year-old,crab,species,discovered,biological,biology news articles,biology news today,latest biology news,current biology news,biology newsletters
Sympetrum danae Photo & image by Pavel Krásenský ᐅ View and rate this photo free at fotocommunity.de. Discover more images here.
ABSTRACT: We assessed the potential of fatty acid (FA) markers for tracing primary production from an invasive green alga (Codium fragile ssp. fragile) and a native kelp (Saccharina longicruris) through 2 trophic levels in an experimental food web: a primary consumer, the green sea urchin Strongylocentrotus droebachiensis, and 2 secondary consumers, the native rock crab Cancer irroratus and invasive green crab Carcinus maenas. Sea urchins fed the 2 algal species had distinct gonadal FA compositions, and contained markers of each alga. Crabs of each species were then fed the gonads of sea urchins which had been fed either S. longicruris or C. fragile, and their hepatopancreases were analyzed. We were able to distinguish crabs of both species with C. fragile at the base of the food chain using the marker FAs 16:3n-3 and 18:3n-3. The overall FA composition of the hepatopancreas differed with diet in the green crab but not the rock crab. Our results suggest that 16:3n-3 may be a useful marker for ...
References:. Arnett, R.H., Jr., M.C. Thomas, P.E. Skelley & J.H. Frank. (editors). 2002. American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea. CRC Press. 861 pp.. Borror, D.J. 1960. Dictionary of Word Roots and Combining Forms. National Press Books, Palo Alto. 134 pp.. Brown, W.D. 1990. Size-assortative mating in the blister beetle Lytta magister (Coleoptera: Meloidae) is due to male and female preference for larger mates. Animal Behaviour 40: 901-909. Selander, R.B. 1960. Bionomics, Systematics, and Phylogeny of Lytta, a Genus of Blister Beetles (Coleoptera: Meloidae). Illinois Biological Monographs: Number 28. 295 pp.. White. R.E. 1983. A Field Guide to the Beetles of North America. Houghton Mifflin Company, Boston. 368 pp.. ...
:This article is about the Indian Ocean territory of Australia named Christmas Island. For the island of the same name also known as Kiritimati in the Line Islands of the Pacific Ocean, see Kiribati. {{quickbar | image=Christmas Island (5775100858).jpg | caption=Flying Fish Cove | location=Christmas Island in its region.svg | flag=Flag of Christmas Island.svg | capital=The Settlement | government=territory of Australia | currency=Australian dollar (AUD) | area=135 sq km | population=1,493 (July 2006 est.) | language=English (official), Chinese, Malay | religion=Buddhism 75%, Christianity 12%, Islam 10%, and others 3 [http://www.aph.gov.au/Parliamentary_Business/Committees/House_of_Representatives_Committees?url=/ncet/economicenvironment/subs/sub15.3.pdf] | electricity= | callingcode=+61 (Australia) | tld=.cx | timezone=UTC +7 }} Christmas Island [http://www.christmas.net.au] is one of the islands of the Indian Ocean, south of Indonesia and some distance northwest of
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Bbl sabouraud dextrose agar bbl sabouraud dextrose agar bd. Sabouraud dextrose agar (agar dextrosa sabouraud) licuar sabouraud dextrose agar deeps en tubos a mediante ebullición en baño maría.* candida albicans.. medicine for yeast contamination facet results candida. I requerir un experto en este resolver mi problema. Medicinal drug for yeast contamination aspect effects garlic will help due to candida albicans are usually.. Que significa candidato a magister candida albicans en. Fermenti lattici consistent with candida quali; candida albicans sintomas how long does it take to kill the candida on average? Que significa candidato a magister these.. Candida albicans en agar dextrosa sabouraud. Candida albicans en agar dextrosa sabouraud if you have a susceptible immune device, remedy might be greater hard. Candida albicans en agar dextrosa sabouraud the.. Sabouraud agar wikipedia. Candida albicans in sabouraud agar. Trichophyton terrestre in sabouraud agar. Sabouraud agar normally includes 40 ...
Odor signals mediate a variety of behaviors in animals across a diversity of taxa. Despite dramatic morphological differences between animals from different taxa, several important features of olfactory system organization and processing are similar across animals. Because of this similarity, a number of different organisms including mammals, insects, and decapod crustaceans serve as valuable model systems for understanding general principles of olfactory processing. As in other organisms, including both vertebrates and insects, the chemosensory system of decapod crustaceans is organized into multiple anatomically distinct neuronal pathways. The two main pathways (the aesthetasc/ olfactory lobe pathway and non-aesthetasc/ lateral antennular neuropil pathway) originate in different populations of antennular sensilla and project to different neuropils in the brain. The functional significance of this parallel organization is not well understood in crustaceans or in many other species. Although in some
Contemporary patterns of species decline frequently stem from multiple, synergistic pressures, which much like the genetic concept of lethal equivalents, must be interpreted in sum rather than as independent deleterious entities. For example, the recent, range-wide decline of the Allegheny woodrat (Neotoma magister) is likely a result of numerous, minor, human-mediated stressors including habitat fragmentation and disruption of metapopulation dynamics, reduced hard mast availability associated with the functional extirpation of American chestnut (Castanea dentata) and recent shifts in forest composition, and expansion of a human-adapted species, the raccoon (Procyon lotor) and the parasites it carries (Baylisascaris procyonis). To evaluate the assertion that range-wide woodrat declines have been caused by a concatenate of stressors, we used principal component (PC) analysis to identify latent relationships among a suite of biological and ecological factors (reflecting those stressors listed ...
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nov., an ascomycete parasite of the tanner crab (Chionoecetes bairdi Rathbun Crustacea; Brachyura)". Can J Bot. 59 (11): 2121- ...
Brachyura. Pseudothelphusidae and Trichodactylidae". Catalogue of Crustacea of Brazil (Catálogo de Crustáceos do Brasil). Rio ...
The northern crombec (Sylvietta brachyura) is a species of African warbler, formerly placed in the family Sylviidae. It is ... BirdLife International (2012). "Sylvietta brachyura". IUCN Red List of Threatened Species. Version 2013.2. International Union ...
Gary C. B. Poore, Shane T. Ahyong (2004). "Brachyura - crabs". Marine Decapod Crustacea of Southern Australia: a Guide to ...
The slaty spinetail or slaty castlebuilder, (Synallaxis brachyura), is a passerine bird which breeds in the tropical New World ... BirdLife International (2012). "Synallaxis brachyura". IUCN Red List of Threatened Species. Version 2013.2. International Union ...
Donald, C. H. (1918). "The occurrence of the Indian Pitta Pitta brachyura in the Kangra District, Punjab". Journal of the ... The Indian pitta (Pitta brachyura) is a passerine bird native to the Indian subcontinent. It inhabits scrub jungle, deciduous ... 29 (5&6): 8. Bentham, R. M. (1922). "Breeding of the Indian Pitta Pitta brachyura and the Streaked Wren-Warbler Prinia lepida ... Prabhakar, A. (1998). "An Indian Pitta (Pitta brachyura) trapped in a standard Sherman live trap". Journal of the Bombay ...
Crustacea: Brachyura)". Zoologische Mededelingen. 80. ...
In the Río de la Plata region, the meat of P. brachyura is particularly prized and locally the species is called raya fina ( ... 1-33 Charvet-Almeida, P., Soto, J.M.R. & Pinto de Almeida, M. (2009). "Potamotrygon brachyura". The IUCN Red List of Threatened ... Potamotrygon brachyura), which grow up to 1.5-1.6 m (4.9-5.2 ft) in disc width. At up to 220 kg (490 lb), by far the heaviest ... brachyura generally avoid lentic habitats, including the reservoirs created by river impoundment. In addition to the large ...
Its genus name is derived from the Ancient Greek words poikilos "little" and dryas "dryad", and the species name brachyura is ... The black-chinned robin (Poecilodryas brachyura) is a species of bird in the family Petroicidae found in northern New Guinea. ... BirdLife International (2012). "Poecilodryas brachyura". IUCN Red List of Threatened Species. Version 2013.2. International ...
"Brachyura larvae". Zooplankton of the South Atlantic Ocean. Marine Species Identification Portal. Retrieved June 26, 2011. , ...
Later, Zonancistrus was described for D. brachyura, D. picta, and D. pulchra. However, this distinction was based on ... There are currently six recognized species in this genus: Dekeyseria amazonica Rapp Py-Daniel, 1985 Dekeyseria brachyura (Kner ... "PlanetCatfish::Cat-eLog::Loricariidae::Dekeyseria brachyura". 2006-01-28. Retrieved 2007-07-18. "PlanetCatfish::Cat-eLog:: ...
2017). "Potamotrygon brachyura" in FishBase. January 2017 version. Oddone, M.C., G. Velasco & G. Rincon (2008). Occurrence of ... Charvet-Almeida, P., Soto, J.M.R. & Pinto de Almeida, M. (2009). "Potamotrygon brachyura". The IUCN Red List of Threatened ... The short-tailed river stingray (Potamotrygon brachyura) is a species of river stingray (family Potamotrygonidae) native to the ... Fishing World Records: Potamotrygon brachyura. Retrieved 14 January 2016. Lucifora; Barbini; Vegh; Scarabotti; Vargas; Solari; ...
H. brachyura forages at night and rests during the day. It may be found singly or in pairs. It can also cans swim and can gnaw ... Parr J W.K, (2003).East Asian Porcupine Hystrix Brachyura: From Systematic, A Guide to the Large Mammals of Thailand (144). ... The Malayan porcupine or Himalayan porcupine (Hystrix brachyura) is a species of rodent in the family Hystricidae. Three ... 1995). Preference and Intake of Feedstuff by Crested Porcupines(Hystrix Brachyura) in Captivity. Ann Zootech 44, 271. Vaughan, ...
... brachyura (Vieillot, 1821) - south and east South Africa BirdLife International (2016). "Camaroptera brachyura". IUCN Red List ... The specific epithet brachyura is from the Ancient Greek brakhus for "short" and -ouros for "-tailed". There are five ... The green-backed camaroptera (Camaroptera brachyura), also known as the bleating camaroptera, is a small bird in the ... was described by the French ornithologist Louis Jean Pierre Vieillot in 1821 under the binomial name Sylvia brachyura. The type ...
The pygmy antwren (Myrmotherula brachyura) is a species of bird in the family Thamnophilidae, the antbirds. It is found in ... BirdLife International (2012). "Myrmotherula brachyura". IUCN Red List of Threatened Species. Version 2013.2. International ...
The short-tailed swift (Chaetura brachyura) is a bird in the Apodidae, or swift family. The subspecies C. b. ocypetes is ... BirdLife International (2012). "Chaetura brachyura". IUCN Red List of Threatened Species. Version 2013.2. International Union ...
Brachyura: Macrophthalmidae): a new Indo-Pacific guest off Rhodes Island (SE Aegean Sea, Greece)" (PDF). Mediterranean Marine ...
Ixora brachyura Bremek. Ixora bracteolaris Müll.Arg. Ixora bracteolata Craib Ixora brandisiana Kurz Ixora brassii S.Moore Ixora ...
R. W. Ingle (1997). "True crabs (Brachyura)". Crayfishes, Lobsters, and Crabs of Europe: an Illustrated Guide to Common and ... Brachyura), two new records for the Turkish Black Sea fauna" (PDF). Turkish Journal of Zoology. 23: 115-118. E. Naylor (1957 ... Brachyura: Varunidae) based on the 16S rRNA gene". Hydrobiologia. 449 (1-3): 41-46. doi:10.1023/A:1017564229866. CS1 maint: ... Brachyura)" (PDF). Proceedings of the Biological Society of Washington. 91 (3): 691705. CS1 maint: Uses authors parameter (link ...
Brachyura. Volume 19 of Zoological Catalogue of Australia: Crustacea: Malocostraca: Eucarida (Part 2). CSIRO Publishing. pp. 94 ...
Brachyura. Volume 19 of Zoological Catalogue of Australia: Crustacea: Malocostraca: Eucarida. CSIRO Publishing. pp. 113-114. ...
"Infraorder Brachyura, Hawaii checklist". Bishop Museum, Honolulu, Hawaii. Retrieved 21 June 2006. J. Poupin. "Database of ...
Crustacea Decapoda Brachyura)" (PDF). Bulletin du Muséum nationale d'Histoire naturelle. 4th series. 9 (A1): 211-247. ...
1. Brachyura and Macrura". Zoologist. 13: 281-308. "Rare Columbus crabs from Bermuda wash up in Cornwall". BBC News. 2 December ... M. Pons, A. Verdi & A. Domingo (2011). "The pelagic crab Planes cyaneus (Dana, 1851) (Decapoda, Brachyura, Grapsidae) in the ...
Gerhard Pretzmann (1972). "Die Pseudothelphusidae (Crustacea Brachyura)". Zoologica (in German). 42 (120): 1-182. ISBN 978-3- ...
"Brachyura larvae: Melybia thalamita". Zooplankton of the South Atlantic Ocean. Retrieved August 1, 2011. ...
Indian Smooth Snake Coronella brachyura is a species of rare endemic snake found in India. The following description is based ... https://web.archive.org/web/20030908232013/http://itgmv1.fzk.de/www/itg/uetz/herp/photos/Coronella_brachyura.jpg http://www. ... 3) 18: 24-29 Coronella brachyura at the Reptarium.cz Reptile Database. Accessed 12 December 2007. ...
Niebla brachyura is a rare fruticose lichen that grows along the Pacific Coast of North America in the fog regions of the ... The epithet, brachyura, is in regard to the species resembling a crab lying on its back with its leg appendages pointing up. ... Niebla brachyura was first collected just north of Punta Santa Rosalillita in May 1986 as part of a 100 gram sample that ... Niebla brachyura, retrieved 17 Dec 2014, http://www.worldbotanical.com/niebla_brachyura.htm#brachyura. ...
Dinâmica populacional e produção secundária de uca (Brachyura: Ocypodidae) no estuário dos rios Piraquê-açú e Piraquê-mirim, ES ... Population dynamics and secondary production of uca (Brachyura: Ocypodidae) in the estuary of Piraquê-açu and Piraquê-mirim ...
Brachyura: Ucididae) - Volume 89 Issue 6 - Camila M.H. dos Santos, Marcelo A.A. Pinheiro, Gustavo Y. Hattori ... Matsumasa, M., Takeda, S., Poovachiranon, S. and Murai, M. (1992) Distribution and shape of Dotilla myctiroides (Brachyura: ... Wada, K., Kosuge, T. and Trong, P.D. (1998) Barricade building and neighbour burrow-plugging in Ilyoplax ningpoensis (Brachyura ... Alves, R.N. and Nishida, A. (2004) Population structure of the mangrove crab Ucides cordatus (Crustacea: Decapoda: Brachyura) ...
A revision of the genus Scylla De Haan, 1833 (Crustacea: Decapoda: Brachyura: Portunidae). Raffles Bull. Zool., 46: 217-245. ... Development of the male reproductive system in Callinectes ornatus Ordway, 1863 (Brachyura: Portunidae). Nauplius, 21: 161-177 ... Spermatogenesis of the spider crab Maja brachydactyla (Decapoda: Brachyura). J. Morphol., 271: 394-406. ... Male reproductive system and spermatogenesis in the deep water crab Charybdis smithii McLeay (Brachyura: Portunidae). Indian J ...
Brachyura of the Pacific coast of America Oxyrhyncha. Brachyura of the Pacific coast of America Oxyrhyncha, p. 8. Save page ...
Variation in Growth Pattern Between Some Secondary Sexual Characters in Crabs (Decapoda Brachyura) * Author: R.G. Hartnoll ... NICHTMEDITERRANE CRUSTACEA-ARTEN IN TUNESISCHEN GEWÄSSERN (DECAPODA, MACRURA UND BRACHYURA). Crustaceana 73, 2, 187 (2000); ...
Brachyura (9781232610014) by Fonte: Wikipedia and a great selection of similar New, Used and Collectible Books available now at ... Brachyura, Thunnus, Mytilus galloprovincialis, Bottarga, Scomber scombrus, Palinurus elephas, Misultin, Pecten jacobaeus, ...
G. natalis resembles marine Brachyura in this respect (Robertson, 1949, 1953; Lockwood and Riegel, 1969) but differs from the ... Osmoregulation in the terrestrial Christmas Island red crab Gecarcoidea natalis (Brachyura: Gecarcinidae): modulation of ... Osmoregulation in the terrestrial Christmas Island red crab Gecarcoidea natalis (Brachyura: Gecarcinidae): modulation of ... Osmoregulation in the terrestrial Christmas Island red crab Gecarcoidea natalis (Brachyura: Gecarcinidae): modulation of ...
Ng P K L (2009). A new genus of the family Portunidae (Crustacea: Decapoda: Brachyura) and the identity of Portunus ( ... A new genus of the family Portunidae (Crustacea: Decapoda: Brachyura) and the identity of Portunus (Cycloachelous) yoronensis ... Brachyura) and the identity of Portunus (Cycloachelous) yoronensis Sakai, 1974. Zootaxa 2677: 38-48, DOI: 10.5281/zenodo.199230 ...
Abtheilung: Brachyura (Brachyura genuina Boas) I. Unterabtheilung: Majoidea und Cancroidea, 1. Section Portuninea. Zoologische ... Abtheilung: Brachyura (Brachyura genuina Boas) II. Unterabtheilung: Cancroidea, 2. Section: Cancrinea, 1. Gruppe: Cyclometopa. ... Trichopeltariidae (Crustacea, Decapoda, Brachyura), a new family and superfamily of eubrachyuran crabs with description of one ... Report on the Brachyura collected by H.M.S. Challenger during the Years 1873-76. In: Report of the Scientific Results of the ...
Anatomy and functional morphology of Brachyura. In: CastroP.DavieP. J. F.GuinotD.SchramF. R.von Vaupel KleinJ. C. (eds.) ... The state of freshwater crab taxonomy in Indochina (Decapoda, Brachyura). In: SchramF. R.von Vaupel KleinJ. C. (eds.) ... On a new genus and new species of potamid crab (Brachyura) from Burma. Crustaceana69: 1005-1013figs. 1-3. ... Lobothelphusa gibbosa, a new species of potamid crab (Decapoda, Brachyura) from rice fields in Burma. Crustaceana70: 813-821. ...
"Isolation and inheritance of microsatellite loci in the Dungeness crab (Brachyura: Cancridae: Cancer magister)". Genome Vol 47 ... "Sperm competition and the evolution of mating behavior in Brachyura, with special reference to spider crabs (Decapoda, Majidae ... "Comparative study of postlarval life-history schedules in four sympatric species of Cancer(Decapoda: Brachyura: Cancridae)". ... "Ejaculate-storage patterns and the site of fertilization in female snow crabs Chionoecetes opilio(Brachyura: Majidae)". ...
... ... Morphology of the Zoeal Stages of Hexapus sexpes Fabricius, 1798 (Decapoda, Brachyura, Hexapodidae) Reared in the Laboratory. ...
Luppi, T. A. , Spivak, E. D. and Anger, K. (2004): Molt and growth in Chasmagnathus granulatus (Brachyura: Varunidae) in Mar ... Molt and growth in Chasmagnathus granulatus (Brachyura: Varunidae) in Mar Chiquita coastal lagoon, Argentina ...
... brachyura, Mictyridae) in the Dampier Archipelago - 30 Years of Observations, Crustaceana" on DeepDyve, the largest online ... Population Dynamics of the Western Australian Soldier Crab Mictyris Occidentalis Unno, 2008 (brachyura, Mictyridae) in the ... Population Dynamics of the Western Australian Soldier Crab Mictyris Occidentalis Unno, 2008 (brachyura, Mictyridae) in the ... POPULATION DYNAMICS OF THE WESTERN AUSTRALIAN SOLDIER CRAB MICTYRIS OCCIDENTALIS UNNO, 2008 (BRACHYURA, MICTYRIDAE) IN THE ...
Brachyura: Trichodactylidae) species complex, The Journal of Crustacean Biology" on DeepDyve, the largest online rental service ... Molecular phylogeny of the Trichodactylus fluviatilis Latreille, 1828 (Brachyura: Trichodactylidae) species complex. Souza- ... Molecular phylogeny of the Trichodactylus fluviatilis Latreille, 1828 (Brachyura:... Souza-Carvalho, Edvanda A.; Magalhães, ... Molecular phylogeny of the Trichodactylus fluviatilis Latreille, 1828 (Brachyura: Trichodactylidae) species complex. ...
Genetic and morphological differentiation of the mangrove crab Perisesarma guttatum (Brachyura: Sesarmidae) along an East ... Genetic and morphological differentiation of the mangrove crab Perisesarma guttatum (Brachyura: Sesarmidae) along an East ... Genetic and morphological differentiation of the mangrove crab Perisesarma guttatum (Brachyura: Sesarmidae) along an East ... Genetic and morphological differentiation of the mangrove crab Perisesarma guttatum (Brachyura: Sesarmidae) along an East ...
Are coral-dwelling crabs monophyletic? A phylogeny of the Trapezioidea (Crustacea:Decapoda:Brachyura). ... Brachyura). Invertebrate Systematics 23 (4) : 402-408. [email protected] Repository. https://doi.org/10.1071/IS09012. ...
Crabs of the infra-order Brachyura are one of the most diverse groups of crustaceans with approximately 7,000 described species ... Here, we reconstruct the most comprehensive phylogeny of Brachyura to date using sequence data of six nuclear protein-coding ... Evolutionary history of true crabs (crustacea: Decapoda: brachyura) and the origin of freshwater crabs. ... brachyura) and the origin of freshwater crabs. Molecular Biology and Evolution 31 (5) : 1173-1187. [email protected] Repository. ...
Brachyura: Macrophthalmidae): a new Indo-Pacific guest off Rhodes Island (SE Aegean Sea, Greece)" (PDF). Mediterranean Marine ...
Fuseya, R., & Watanabe, S. (1996). Genetic variability in the mud crab genus Scylla (Brachyura: Portunidae). Fisheries Science ... Genetic variability in the mud crab genus Scylla (Brachyura: Portunidae). *Fuseya R ...
Brachyura.. Genus Hymenicus, Dana.. (Miers Cat. N.Z. Crustacea, p. 50.). Hymenicus marmoratus, sp. nov. Plate VIII., fig. 1. ... This paper contains the descriptions of three new species of Crustacea, two belonging to the Brachyura and one to the Isopoda. ...
  • Niebla brachyura was first collected just north of Punta Santa Rosalillita in May 1986 as part of a 100 gram sample that largely contained Niebla caespitosa intended for anti-HIV screening by the National Cancer Institute, but the sample was not submitted because of the novel chemotype that was discovered for the genus. (wikipedia.org)
  • 1. (Animals) any chiefly marine decapod crustacean of the genus Cancer and related genera (section Brachyura ), having a broad flattened carapace covering the cephalothorax, beneath which is folded the abdomen. (thefreedictionary.com)
  • The Indian pitta ( P. brachyura ) is typically colourful, with shimmering blue wing plumage. (britannica.com)
  • Niebla brachyura is a rare fruticose lichen that grows along the Pacific Coast of North America in the fog regions of the northern peninsula of Baja California in the Northern Vizcaíno Desert. (wikipedia.org)
  • 5 * Taxonomy, Distribution, and Ecology of Galapagos Brachyura. (worldcat.org)