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).
One of the largest orders of mostly marine CRUSTACEA, containing over 10,000 species. Like AMPHIPODA, the other large order in the superorder Peracarida, members are shrimp-like in appearance, have sessile compound eyes, and no carapace. But unlike Amphipoda, they possess abdominal pleopods (modified as gills) and their bodies are dorsoventrally flattened.
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.
An infraorder of CRUSTACEA, in the order DECAPODA comprising the hermit crabs and characterized by a small fifth pair of legs.
An order of mostly marine CRUSTACEA containing more than 5500 species in over 100 families. Like ISOPODA, the other large order in the superorder Peracarida, members are shrimp-like in appearance, have sessile compound eyes, and no carapace. But unlike Isopoda, they possess thoracic gills and their bodies are laterally compressed.
A diverse genus of minute freshwater CRUSTACEA, of the suborder CLADOCERA. They are a major food source for both young and adult freshwater fish.
A suborder of CRUSTACEA, order Diplostraca, comprising the water fleas. They are benthic filter feeders that consume PHYTOPLANKTON. The body is laterally compressed and enclosed in a bivalved carapace, from which the head extends.
Members of the phylum Arthropoda, composed of organisms having a hard, jointed exoskeleton and paired jointed legs. It includes the class INSECTS and the subclass ARACHNIDA, many species of which are important medically as parasites or as vectors of organisms capable of causing disease in man.
Infestations by PARASITES which live on, or burrow into, the surface of their host's EPIDERMIS. Most ectoparasites are ARTHROPODS.
An infraorder of chiefly marine, largely carnivorous CRUSTACEA, in the order DECAPODA, including the genera Cancer, Uca, and Callinectes.
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.
A family of CRUSTACEA, order DECAPODA, comprising the palaemonid shrimp. Genera include Macrobrachium, Palaemon, and Palaemonetes. Palaemonidae osmoregulate by means of gills.
A huge subclass of mostly marine CRUSTACEA, containing over 14,000 species. The 10 orders comprise both planktonic and benthic organisms, and include both free-living and parasitic forms. Planktonic copepods form the principle link between PHYTOPLANKTON and the higher trophic levels of the marine food chains.
Infections or infestations with parasitic organisms. The infestation may be experimental or veterinary.
A family of CRUSTACEA, order DECAPODA, comprising the penaeid shrimp. Species of the genus Penaeus are the most important commercial shrimp throughout the world.
The relationships of groups of organisms as reflected by their genetic makeup.
The blood/lymphlike nutrient fluid of some invertebrates.
Family of large marine CRUSTACEA, in the order DECAPODA. These are called clawed lobsters because they bear pincers on the first three pairs of legs. The American lobster and Cape lobster in the genus Homarus are commonly used for food.
Genes that are located on the MITOCHONDRIAL DNA. Mitochondrial inheritance is often referred to as maternal inheritance but should be differentiated from maternal inheritance that is transmitted chromosomally.
A superfamily of various freshwater CRUSTACEA, in the infraorder Astacidea, comprising the crayfish. Common genera include Astacus and Procambarus. Crayfish resemble lobsters, but are usually much smaller.
The continuous sequence of changes undergone by living organisms during the post-embryonic developmental process, such as metamorphosis in insects and amphibians. This includes the developmental stages of apicomplexans such as the malarial parasite, PLASMODIUM FALCIPARUM.
Proteins synthesized by organisms belonging to the phylum ARTHROPODA. Included in this heading are proteins from the subdivisions ARACHNIDA; CRUSTACEA; and HORSESHOE CRABS. Note that a separate heading for INSECT PROTEINS is listed under this heading.
Cultivation of natural faunal resources of water. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Diseases of freshwater, marine, hatchery or aquarium fish. This term includes diseases of both teleosts (true fish) and elasmobranchs (sharks, rays and skates).
Large natural streams of FRESH WATER formed by converging tributaries and which empty into a body of water (lake or ocean).
Number of individuals in a population relative to space.
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.
The number of males per 100 females.
The process of cumulative change over successive generations through which organisms acquire their distinguishing morphological and physiological characteristics.
The farthest or outermost projections of the body, such as the HAND and FOOT.
The restriction of a characteristic behavior, anatomical structure or physical system, such as immune response; metabolic response, or gene or gene variant to the members of one species. It refers to that property which differentiates one species from another but it is also used for phylogenetic levels higher or lower than the species.
Water containing no significant amounts of salts, such as water from RIVERS and LAKES.
Remains, impressions, or traces of animals or plants of past geological times which have been preserved in the earth's crust.
Double-stranded DNA of MITOCHONDRIA. In eukaryotes, the mitochondrial GENOME is circular and codes for ribosomal RNAs, transfer RNAs, and about 10 proteins.
The relationship between an invertebrate and another organism (the host), one of which lives at the expense of the other. Traditionally excluded from definition of parasites are pathogenic BACTERIA; FUNGI; VIRUSES; and PLANTS; though they may live parasitically.
The class Insecta, in the phylum ARTHROPODA, whose members are characterized by division into three parts: head, thorax, and abdomen. They are the dominant group of animals on earth; several hundred thousand different kinds having been described. Three orders, HEMIPTERA; DIPTERA; and SIPHONAPTERA; are of medical interest in that they cause disease in humans and animals. (From Borror et al., An Introduction to the Study of Insects, 4th ed, p1)
A functional system which includes the organisms of a natural community together with their environment. (McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed)
The variety of all native living organisms and their various forms and interrelationships.
The pattern of any process, or the interrelationship of phenomena, which affects growth or change within a population.
The process of cumulative change at the level of DNA; RNA; and PROTEINS, over successive generations.
The total process by which organisms produce offspring. (Stedman, 25th ed)
The salinated water of OCEANS AND SEAS that provides habitat for marine organisms.
Divisions of the year according to some regularly recurrent phenomena usually astronomical or climatic. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
A mature haploid female germ cell extruded from the OVARY at OVULATION.
The organ of sight constituting a pair of globular organs made up of a three-layered roughly spherical structure specialized for receiving and responding to light.
Wormlike or grublike stage, following the egg in the life cycle of insects, worms, and other metamorphosing animals.
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
A multistage process that includes cloning, physical mapping, subcloning, determination of the DNA SEQUENCE, and information analysis.
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)
A subclass of CRUSTACEA comprising the tongue worms which are obligatory parasites of reptiles, birds, and mammals including humans.
An order of CRUSTACEA that are parasitic on freshwater fish.

Polymorphism in a cyclic parthenogenetic species: Simocephalus serrulatus. (1/744)

A survey of sixteen isozyme loci using electrophoretic techniques was conducted for three isolated natural populations and one laboratory population of the cyclic parthenogenetic species, Simocephalus serrulatus. The proportion of polymorphic loci (33%-60%) and the average number of heterozygous loci per individual (6%-23%) in the three natural populations were found to be comparable to those found in most sexually reproducing organisms. Detailed analyses were made for one of these populations using five polymorphic loci. The results indicated that (1) seasonal changes in genotypic frequencies took place, (2) apomicitic parthenogenesis does not lead to genetic homogeneity, and (3) marked gametic disequilibrium at these five loci was present in the population, indicating that selection acted on coadapted groups of genes.  (+info)

Novel regulation of the homeotic gene Scr associated with a crustacean leg-to-maxilliped appendage transformation. (2/744)

Homeotic genes are known to be involved in patterning morphological structures along the antero-posterior axis of insects and vertebrates. Because of their important roles in development, changes in the function and expression patterns of homeotic genes may have played a major role in the evolution of different body plans. For example, it has been proposed that during the evolution of several crustacean lineages, changes in the expression patterns of the homeotic genes Ultrabithorax and abdominal-A have played a role in transformation of the anterior thoracic appendages into mouthparts termed maxillipeds. This homeotic-like transformation is recapitulated at the late stages of the direct embryonic development of the crustacean Porcellio scaber (Oniscidea, Isopoda). Interestingly, this morphological change is associated with apparent novelties both in the transcriptional and post-transcriptional regulation of the Porcellio scaber ortholog of the Drosophila homeotic gene, Sex combs reduced (Scr). Specifically, we find that Scr mRNA is present in the second maxillary segment and the first pair of thoracic legs (T1) in early embryos, whereas protein accumulates only in the second maxillae. In later stages, however, high levels of SCR appear in the T1 legs, which correlates temporally with the transformation of these appendages into maxillipeds. Our observations provide further insight into the process of the homeotic leg-to-maxilliped transformation in the evolution of crustaceans and suggest a novel regulatory mechanism for this process in this group of arthropods.  (+info)

Changes in physiological parameters and feeding behaviour of Atlantic salmon Salmo salar infected with sea lice Lepeophtheirus salmonis. (3/744)

Atlantic salmon Salmo salar L. artificially infected with salmon lice Lepeophtheirus salmonis (Kroyer 1837) recovered from detrimental physiological changes and skin damage induced by preadult lice as the parasites matured. Growth rates of Atlantic salmon remained unaffected by lice infection, but food consumption decreased with increasing feeding and movement of the lice prior to and post-mating, correlating with the appearance of head erosions and detrimental changes in physiological integrity. Food consumption of the fish increased as the lice moulted to the adult stage and gravid female lice settled in a posterior location on the fish, subsequently reducing the impact of infection and allowing recovery of the skin damage. However, the impact of preadults was limited, as the decrease in food consumption of fish at 21 d post-infection had no effect on either the specific growth rate or condition factor of the fish. Furthermore, the intensity of lice infections at each of the sample days was not correlated with food consumption, specific growth rate or any of the haematological or physiological parameters measured, either before or after infection, indicating that lice intensity was independent of social dominance/subordinance. This work has provided the first evidence that infected fish can recover from the detrimental changes caused by lice infection, even when they are still infected with lice. If fish can survive the preadult stage of lice, then the mortal impact of lice infections is greatly reduced.  (+info)

Extent of gill pathology in the toadfish Tetractenos hamiltoni caused by Naobranchia variabilis (Copepoda: Naobranchiidae). (4/744)

Sanguinivorous Naobranchia variabilis prefer the first gill arch, external hemibranch and anterior end of the gill arch. The smallest N. variabilis observed attached to fish by a thin filament which connects fused tips of second maxillae to a 'plug' inserted into the gill tissue. Second maxillae enlarge to encircle and increasingly compress the gill filament, which results in a thin layer of epithelium and connective tissue overlying the cartilaginous supporting bar. Early juveniles cause little tissue proliferation, but the extent of proliferated epithelial and connective tissue (PR) adjacent to the maxillae increases from late juveniles to subadult and adult copepods. Most variation in length of gill filament damage (PL, proliferated and compressed tissue) among age classes is explained by maxilla length (ML, length of compressed gill filament); adult trunk width (TRW) explains an extra, small amount of variation, but not trunk length (TRL) or total fish length (TL). Most variation in ML is explained by TRW of adults, subadults and late juveniles, and TRL of early juveniles. PR is explained by TRW for adults, but by ML for other ages. These patterns are due to elongation of the juvenile trunk during growth and lateral expansion of adult egg pouches during maturation. Up to 38 N. variabilis, average (avg.) = 9.3, infected individual Tetractenos hamiltoni and damaged up to 3.4% (avg. 0.72%) of total filament length and 8.6% (avg. 2.1%) of gill filaments per fish.  (+info)

Regional specification during embryogenesis in the inarticulate brachiopod Discinisca. (5/744)

The process of embryogenesis is described for the inarticulate brachiopod Discinisca strigata of the family Discinidae. A fate map has been constructed for the early embryo. The animal half of the egg forms the dorsal ectoderm of the apical and mantle lobes. The vegetal half forms mesoderm and endoderm and is the site of gastrulation; it also forms the ectoderm of the ventral regions of the apical and mantle lobes of the larva. The plane of the first cleavage goes through the animal-vegetal axis of the egg along the future plane of bilateral symmetry of the larva. The timing of regional specification in these embryos was examined by isolating animal, vegetal, or lateral regions at different times from the 2-cell stage through gastrulation. Animal halves isolated at the 8-cell and blastula stages formed an epithelial vesicle and did not gastrulate. When these halves were isolated from blastulae they formed the cell types typical of apical and mantle lobes. Vegetal halves isolated at all stages gastrulated and formed a more or less normal larva; the only defect these larvae had was the lack of an apical tuft, which normally forms from cells at the animal pole of the embryo. When lateral isolates were created at all developmental stages, these halves gastrulated. Cuts which separated presumptive anterior and posterior regions generated isolates at the 4-cell and blastula stages that formed essentially normal larvae; however, at the midgastrula stage these halves formed primarily anterior or posterior structures indicating that regional specification had taken place along the anterior-posterior axis. The plane of the first cleavage, which predicts the plane of bilateral symmetry, can be shifted by either changing the cleavage pattern that generates the bilateral 16-cell blastomere configuration or by isolating embryo halves prior to, or during, the 16-cell stage. These results indicate that while the plane of the first cleavage predicts the axis of bilateral symmetry, the axis is not established until the fourth cleavage. The development of Discinisca is compared to development in the inarticulate brachiopod Glottidia of the family Lingulidae and to Phoronis in the phylum Phoronida.  (+info)

Natural copepods are superior to enriched artemia nauplii as feed for halibut larvae (Hippoglossus hippoglossus) in terms of survival, pigmentation and retinal morphology: relation to dietary essential fatty acids. (6/744)

Replicate groups of halibut larvae were fed to d 71 post-first feeding (PFF) either the marine copepod, Eurytemora velox, or Artemia nauplii doubly enriched with the marine chromist or golden algae, Schizochytrium sp., (Algamac 2000) and a commercial oil emulsion (SuperSelco). The fatty acid compositions of eyes, brains and livers from larvae fed the two diets were measured, and indices of growth, eye migration and skin pigmentation were recorded along with histological examinations of eye and liver. The docosahexaenoic acid [22:6(n-3); DHA]/eicosapentaenoic acid [20:5(n-3); EPA] ratios in Artemia nauplii enriched with the SuperSelco and Algamac 2000 were 0.4 and 1.0, respectively. The E. velox copepods were divided into two size ranges (125-250 and 250-400 microm) with the smaller size range containing the highest level of (n-3) highly unsaturated fatty acids (HUFA). The DHA/EPA ratios for the two size ranges of copepods were 2.0 and 0.9, respectively. The total lipids of eyes, brains and livers of larvae fed copepods had higher levels of DHA and lower levels of EPA than those of larvae fed enriched Artemia. The percentage of survival of the halibut larvae was significantly higher when copepods rather than enriched Artemia nauplii were fed, but larval specific growth rates did not differ. The indices of eye migration were high and not significantly different in larvae fed the two diets, but the percentage of larvae undergoing successful metamorphosis (complete eye migration and dorsal pigmentation) was higher in larvae fed copepods (40%) than in larvae fed enriched Artemia (4%). The rod/cone ratios in histological sections of the retina were 2.5 +/- 0.7 in larvae fed copepods and 1.3 +/- 0.6 in larvae fed enriched Artemia (P < 0.01). Histological examination of the livers and intestines of the larvae were consistent with better assimilation of lipid from copepods than lipid from Artemia nauplii up to 46 d post-first feeding. Thus, marine copepods are superior to enriched Artemia as food for halibut larvae in terms of survival, eye development and pigmentation, and this superiority can be related to the level of DHA in the feed.  (+info)

Polymorphism and evolution of collagenolytic serine protease genes in crustaceans. (7/744)

Two genomic DNA fragments encoding crustacean collagenolytic serine protease genes show coding fragments that span 1522-1526 base pairs and contain seven exons encoding the complete amino acid sequence of two enzymes, CHYA and CHYB. As in serine protease genes from other organisms, the region coding for the residues around the active site is split by two introns. Although the introns differ from those of other organisms in size and nucleotide sequence, their number and location are more or less the same as found in mammalian chymotrypsin or elastase genes that evolved lately, but different for trypsin genes. Meanwhile, the junction that occurs between the propeptide and the maturation site is only found in the shrimp genes. This is also the case for the junction located 13 amino acids after the active site aspartic acid in these genes. Between 40 and 50 copies of the genes are reported by Southern analysis. Seven different genes within ChyA Pv family present 0-6% base changes, whereas five different genes belonging to ChyB Pv family show changes of up to 27% in the short studied portion of exon 4. This last family presents a mosaic organization of the coding parts, which are also expressed in the hepatopancreas of the shrimp as the variant PVC5 cDNA.  (+info)

The structure of a glycosylated protein hormone responsible for sex determination in the isopod, Armadillidium vulgare. (8/744)

Two glycoforms (AH1 and AH2) of androgenic hormone, and its corresponding hormone precursor derived from HPLC-purified androgenic gland extract from the woodlouse Armadillidium vulgare were fully characterized by microsequencing and mass spectrometry. The amino-acid sequences of the two glycoforms were identical; they consist of two peptide chains, A and B, of 29 and 44 amino acids, respectively, with chain A carrying one N-glycosylated moiety on Asn18. The two chains are linked by two disulfide bridges. Glycoforms were only differentiated by the size and heterogeneity of the glycan chain. The androgenic hormone precursor (16.5 kDa) was shown to contain the sequence of chains A and B from the androgenic hormone, connected by a C-peptide (50 amino acids). These results were confirmed by matrix-assisted laser desorption ionization-time of flight (MALDI-TOF) analysis performed on a single hypertrophied androgenic gland. When injected into young females, both glycoforms of the androgenic hormone were able to override genetic sex-determination. In invertebrates, there is no other example where sex-differentiation is controlled by a protein hormone that is not synthesized by the gonads but by a special gland. A functional comparison with two other hormones which are believed to play a role in sex determination, i.e. ecdysone in insects and anti-Mullerian hormone in mammals, is presented. Work is in progress to clone and characterize the gene encoding androgenic hormone, moreover special attention is devoted to its regulatory regions, putative targets for the Wolbachia action.  (+info)

A study on the distribution of ostracods in small freshwater habitats of the province of Parma was conducted from May 2004 to December 2005. Vernal pools, ponds, shallow lakes, fountains, springs, ditches, canals, and streams were among the most common types of aquatic systems included in this survey. Altogether, 90 sites located between 24 and 1557 m a.s.l. were visited, and 125 samples were collected. 41 samples did not contain ostracods, and 7 samples were not considered because only immature specimens or empty valves were found. Consequently, 77 samples from 58 sites were analysed. Whenever possible, ostracod identification was done at the species level based on the morphology of both valves and limbs. Thirty-eight taxa from 20 genera belonging to the families Candonidae, Ilyocyprididae, Cyprididae, and Notodromadidae were recorded. This roughly accounts for one-third of the estimated number of non-marine ostracod species in Italy. Scanning electron microscopy images of valves are provided. ...
The Stomatopoda make up an order of crustaceans that have evolved for more than 400 million years since they emerged from their haplocarid ancestors. In previous phylogenetic studies based on morphological characters, seven superfamilies and 19 families were erected for more than 400 extant stomatopod species. Prior to this study, no effort was made to investigate the interrelationships among stomatopod superfamilies using molecular markers. In this study, 18s rDNA, 28s rDNA, and COI genes of 25 stomatopod species from 10 families and four superfamilies were sequenced to build a molecular phylogeny for these stomatopods. Whereas some interfamilial relationships are in congruence with previous studies, the deep structure of the fully resolved molecular phylogeny reconstructed in the present study is fundamentally different. Two previously proposed sister clades, the smashers and the spearers, were collapsed in the molecular tree. Hemisquilidae, other than closely related to other families from ...
TY - JOUR. T1 - Effects of 17beta-estradiol on survival, growth, sexual development and molting cycles of the marine crustacean mysid shrimp, Americamysis bahia.. AU - Hirano, Masashi. AU - Ishibashi, Hiroshi. AU - Watanabe, Naoko. AU - Matsumura, Naomi. AU - Watanabe, Akiko. AU - Onikura, Norio. AU - Kishi, Katsuyuki. AU - Shiratsuchi, Hideki. AU - Arizono, Koji. PY - 2004. Y1 - 2004. N2 - A 14-day partial life-cycle test was performed to assess the effects of 17beta-estradiol (E2) on the survival, growth, sexual development and molting cycles of a marine crustacean mysid shrimp (Americamysis bahia). Seven-day-old mysids were exposed to the nominal E2 concentrations of 31.3, 62.5, 125, 250 and 500 microg/l for 14 days. The total length and the body weight of mysids significantly decreased relative to the controls when exposed to 62.5, 250 and 500 microg/l E2 for 14 days. Moreover, the carapace length significantly decreased in the 500 microg/l E2 treatment groups. No significant differences ...
Neogene diversity history in the world center of biodiversity known as the Indo-Australian Archipelago (IAA) or the Coral Triangle remains poorly understood. Of particular interest is the recently reported Pliocene diversity jump that is considered to have established the present-day biodiversity level of the region needs rigorous inspections. We investigated Neogene fossil marine ostracods from Java, Indonesia and evaluate and test the Pliocene Diversity Jump hypothesis. We found a significant diversity increase from the late Miocene to the Pliocene, supporting the hypothesis. At the same time, there are considerable differences in depositional environments between the Miocene and Pliocene samples. Although it is unlikely that the main reason of the diversity increase is due to this paleoenvironmental difference, further samples and data from the IAA hotspot region are needed for more rigorous inspections. Our comparison between species-level and genus-level data indicated that species-level ...
This project examined the trace-element and stable-isotope composition of non-marine ostracod shells and their use in Holocene palaeoclimate reconstruction, with particular reference to mid-latitude shallow carbonate lakes. Controls on the chemical composition of shells from such environments were studied. Results were used to test the application of ostracod shell chemistry data to palaeoclimate reconstruction. Selected techniques were applied to a high resolution study of Holocene lake marl sequence. The project investigated influences on shell chemistry during formation, sedimentary deposition and extraction. A core covering approximately 9,450 to 5,800 Cal. Yr BP was taken from Cunswick Tarn, Cumbria, yielding ostracod faunal and shell chemistry data used to produce a palaeoclimate interpretation for the early Holocene. This interpretation agreed with studies showing a warm, dry early Holocene and a cooler, wetter mid-Holocene. Seasonal sampling of water and ostracods at Cunswick Tarn ...
Define Malacostraca. Malacostraca synonyms, Malacostraca pronunciation, Malacostraca translation, English dictionary definition of Malacostraca. Noun 1. Malacostraca - largest subclass of Crustacea including most of the well-known marine, freshwater, and terrestrial crustaceans: crabs; lobsters;...
The distribution of sexual reproduction of the geographic parthenogen Eucypris virens (Crustacea: Ostracoda) matches environmental gradients in a temporary ...
Llandeilo and Caradoc beyrichiocope Ostracoda are described from England and Wales. They are referred to 3 suborders (Palaeocopa, Binodicopa, Eridostraca), 8 families (Eurychilinidae. Ctenonotellidae. Tetradellidae (with 1 new subfamily); Bolliidae, Aechminidae, Circulinidae and Spinigeritidae; Eridoconchidae). 38 genera (7 new and 2 new subgenera) and 52 named species (35 new). Thirteen other forms are referred mainly to the Palaeocopa under open nomenclature, or are simply recorded. Sampling was concentrated on the sandstone/limestone sequences of Llandeilo and Caradoc age of South Wales. Superbly preserved silicified faunas were extracted using acid techniques. Casting methods extended sampling into the predominantly sandy facies of Caradoc age of the Welsh Bc.;erland, North Wales and northern England. Largely neglected,these ostracode mould faunas have provided an excellent source of material. Scanning electron microscopy has been extensively employed to illustrate the ostracodes recovered. ...
Hehemann, J. H. , Redecke, L. , Betzel, C. and Saborowski, R. (2007): Digestive enzymes from marine crustaceans as potential tools for biotechnological applications , 8th International Marine Biotechnolgy Conference, 11 - 16 March 2007, Eilat, Israel ...
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Maxillopoda. Ostracoda. Malacostraca. Crustaceans (Crustacea) form a very large group of arthropods, usually treated as a subphylum, which includes such familiar animals as crabs, lobsters, crayfish, shrimp, krill and barnacles. The 50,000 described species range in size from Stygotantulus stocki at 0.1 mm (0.004 in), to the Japanese spider crab with a leg span of up to 12.5 ft (3.8 m) and a mass of 44 lb (20 kg). Like other arthropods, crustaceans have an exoskeleton, which they moult to grow. They are distinguished from other groups of arthropods, such as insects, myriapods and chelicerates by the possession of biramous (two-parted) limbs, and by the nauplius form of the larvae.. Most crustaceans are free-living aquatic animals, but some are terrestrial (e.g. woodlice), some are parasitic (e.g. fish lice, tongue worms) and some are sessile (e.g. barnacles). The group has an extensive fossil record, reaching back to the Cambrian, and includes living fossils such as Triops cancriformis, which ...
Definition of Crustacea in the Get a Grip America. Meaning of Crustacea with illustrations and photos. Pronunciation of Crustacea and its etymology. Related words - Crustacea synonyms, antonyms, hypernyms and hyponyms. Example sentences containing Crustacea
How to Identify Malacostraca of Arthropoda? How Malacostraca are classified? Systematics of Malacostraca, What is a Malacostraca? Overview of the Class
The name Triops comes from the Greek τρία (tría) meaning three and ὤψ (ops) meaning eye.[8] The head of T. longicaudatus bears a pair of dorsal compound eyes that lie close to each other and are nearly fused together. The compound eyes are generally sessile (not stalked). In addition, there is a naupliar ocellus (the third eye) between them. The compound eyes are on the surface of the head, but the ocellus is deep within the head. All the eyes, however, are easily visible through the shell covering of the head. Franz von Paula Schrank was the first author to use the genus name Triops,[9] coining it in his 1803 work on the fauna of Bavaria. Their German name was Dreyauge, which means three-eye. He collected and described specimens from the same locality in Regensburg from which Schäffer, another naturalist who had studied the Notostraca, obtained his specimens in the 1750s. However, other authors, starting with Louis Augustin Guillaume Bosc, had adopted the genus name Apus for ...
The Crustacea are a subphylum of pancrustaceans with 50,000 described species. They are part of the phylum Arthropoda. Crustaceans include crabs, lobsters, crayfish, shrimp, krill and barnacles. They are relatives of insects. If the Arthropods are regarded as a superphylum, then the insects and crustaces would be phyla. (see List of animal phyla). The group has an extensive fossil record, reaching back to the Cambrian. Most crustaceans are aquatic, mostly marine. Some have moved onto land permanently. Crustaceans that live on land include some crabs, and woodlice. Crustacea range in size from a parasite 0.1mm long, to the Japanese spider crab with a leg span of up to 14 ft (4.3 m) and a mass of 44 lb (20 kg). The North Atlantic lobster can weigh more than 40 pounds. Most crustaceans are mobile, but some become sessile after their larval stage. Barnacles become attached to rocks on the sea shore. Some are parasitic, like fish lice, and tongue worms. Crustacea usually have separate sexes, and the ...
The Crustacea are a subphylum of arthropods with 67,000 described species. They are part of the phylum Arthropoda. Crustaceans include crabs, lobsters, crayfish, shrimp, krill and barnacles. They are relatives of insects. If the Arthropods are regarded as a superphylum, then the insects and crustacea would be phyla (see List of animal phyla). The group has an extensive fossil record, reaching back to the Cambrian. Most crustaceans are aquatic, mostly marine. Some have moved onto land permanently. Crustaceans that live on land include some crabs, and woodlice. Crustacea range in size from a parasite 0.1mm long, to the Japanese spider crab with a leg span of up to 14 ft (4.3 m) and a mass of 44 lb (20 kg). The North Atlantic lobster can weigh more than 40 pounds. Most crustaceans are mobile, but some become sessile after their larval stage. Barnacles are crustacea which become attached to rocks on the sea shore. Some are parasitic, like fish lice, and tongue worms. Crustacea usually have separate ...
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Ecological and biogeographical studies of Neotropical non-marine ostracods are rare, although such information is needed to develop reliable paleoecological and paleoclimatic reconstructions for the r
Description: The body of this organism is up to 8 cm long. The capitulum is protected by five large, whitish plates and several smaller ones which lie in basal whorls. The carina lacks spines, and the tough, fleshy peduncle allows for elasticity to the force of the surface. The color is dark brown and contains many calcareous spicules embedded in its surface. How to Distinguish from Similar Species: There is a pelagic goose barnacle, Lepas anatifera, frequently found in the Pacific Northwest that looks somewhat similar to M. polymerus, however is has fewer plates and only occurs in the open sea and on driftwood washed ashore. There is a closely related European species, Pollicipes pollicipes, which is cooked and served as a delicacy. However, it is now in short supply and M. polymerus has been exported from British Columbia to Portugal and Spain. Geographical Range: This species of barnacle is found as far north as Southeast Alaska to Baja California in the south. Depth Range: P. polymerus ...
Cruise plan for RV Squilla SQ990802 - produced from a first level inventory of measurements and samples collected at sea that provides information on who has collected what, where and when. Assembled initially from cruise plans and then updated from other sources including the Intergovernmental Oceanographic Commission (IOC) Cruise Summary Report (ROSCOP) forms submitted to BODC for each UK research cruise. Provides a useful resource of cruise activities to scientists, programme managers and data managers.
Cruise plan for RV Squilla SQ011029 - produced from a first level inventory of measurements and samples collected at sea that provides information on who has collected what, where and when. Assembled initially from cruise plans and then updated from other sources including the Intergovernmental Oceanographic Commission (IOC) Cruise Summary Report (ROSCOP) forms submitted to BODC for each UK research cruise. Provides a useful resource of cruise activities to scientists, programme managers and data managers.
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its amazing what tech can do these days….the angle of glass makes the triops look bigger….Iam a expert and i can tell you this is fake as they grow up to 2-4 inches depending on tank size (living environment), what breed and what you feed them too. Triops are they same as sea monkeys, aquasaurs etc. they are a brand name for brine shrimp-a group of crustaceans that undergo cryptobiosis-sold in hatching kits as novelty aquarium pets. they eat fish food or powered fish food par- boiled carrots lettuce and potato, blood worm and earthworm are an enjoyable snack when they get bigger. silver sand is good to put in the tank for burrowing as they lay eggs in sand or grit.. ...
TY - JOUR. T1 - Analysis of the expression pattern of Mysidium columbiae wingless provides evidence for conserved mesodermal and retinal patterning processes among insects and crustaceans. AU - Duman-Scheel, Molly. AU - Pirkl, Nicole. AU - Patel, Nipam H.. PY - 2002/12/1. Y1 - 2002/12/1. N2 - The Wnt family includes a number of genes, such as wingless (wg), which encode secreted glycoproteins that function in numerous developmental patterning processes. In order to gain a better understanding of crustacean pattern formation, a wg orthologue was cloned from the malacostracan crustacean Mysidium columbiae (mysid), and the expression pattern of this gene was compared with that of Drosophila wg. Although Drosophila wg is expressed in many developing tissues, such as the ventral neuroectoderm, M. columbiae wg (mcowg) expression is detected within only a subset of these tissues. mcowg is expressed in the dorsal part of each developing segment and within the developing eye, but not within the ventral ...
Barnacle: Barnacle, any of more than 1,000 predominantly marine crustaceans of the subclass Cirripedia highly modified for sedentary life. There are about 850 free-living species (all marine) and about 260 species that are internal parasites of crabs and other crustaceans. A brief treatment of cirripedes
An introduction to the biology, classification and ecology of prawns, shrips crabs lobsters and their allies, the subphylum Crustacea
For the ostracode analysis, a total of 87 samples were selected at intervals of ca. 10 cm between 0 to 865 cm depth. Due to the lack of ostracode valves, the lower part (980 865 cm) of the sediment sequence was not included in the study. The samples were oven dried at 50 °C and weighed to determine their dry weights. Sediments were disintegrated by soaking in water for 2 3 days and washed through two sieves of 0.063 mm and 0.425 mm to collect sediment with ostracode valves and eliminate the finer sediments. The residues were oven dried at 50 °C and examined under an Olympus SZX FOF stereoscopic microscope to identify the species and calculate their abundance according to the descriptions provided by Van Morkhoven (1963), Delorme (1971 a, b, c), Forester (1985) and Carreño (1990). The total ostracode abundance in each sample was calculated by adding the number of adult and juvenile valves of all the observed species. The number of adult valves of each species was counted in 10 g of dry ...
කෘමීන් හා අනෙකුත් සත්ව වර්ග අතර පරිණාමන සබඳතාව මේ වන තුරුත් පැහැදිලි නැත.නමුත් බොහෝ පැරණි කාණ්ඩයන්ට අයත් කන්කුන්ඩන් හා පත්තෑයන් සම්බන්ධව කබලු මත්ස්‍යා සමඟ වූ ඉතා කිට්ටු පරිණාමන සබඳතාවයක සාක්ෂි ඇත. Pancrustacea න්‍යායට අනුව කෘමීන් Ramipedia හා Malacostraca සමඟ එක්ව ස්වභාවික Clade සාදයි.පත්තෑයා,කන්කුන්ඩා,ගෝණුස්සා හා මකුළුවා වැනි අනෙකුත් පොළොව මත සිටින සන්ධිපාදකයින් කෘමීන් සමඟ පැටලිලි සහගත වෙයි.ඔවුන්ගේ ...
In the Crustacea section we mainly study decapods. These are animals that the non-specialist will easily classify as crustaceans.
Light-evoked intracellular voltage noise records have been obtained from Limulus eccentric cells, from threshold light intensity to an intensity .10(5) times threshold. These data are analyzed in terms of a simple adapting-bump noise model. It is shown how the model yields a data reduction procedure that slightly generalizes the familiar use of Campbells theorem for Poisson shot noise: the correlative effect of adaptation amends Campbells theorem by a single multiplicative factor, which may be estimated directly from the power spectrum of the noise data. The model also permits direct estimation of the bump shape from the power spectrum. The bump shape estimated from noise at dim light is in excellent agreement with the average shape of bumps observed directly in the dark. The data yield a bump rate that is linear with light up through about 50 times threshold intensity but that falls short of linearity by a factor of 35 at the brightest light. The bump height decreases as the -0.4 power of ...
John Benbow b. 1 Apr 1800 Grendon Warren, Herefordshire, England d. Sep 1875 Cottonwood, Salt Lake, Utah, USA: Early Latter-day Saints Database
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When the nervous system receptor is resting (not being stimulated) there is a difference in charge inside and outside the cell. The difference in voltage is called the potential difference. The potential difference when the cell is at rest is called the resting potential. When a stimulus is detected the membrane becomes more permeable, so ions move in and out of the cell, altering the potential difference, this change in potential difference is called generator potential. The larger the stimulus the larger the generator potential. If the generator potential is large enough it will trigger an action potential, this is an electrical impulse along a neurone. This only happens if the generator potential reaches a certain level called the threshold level ...
Current production (ca. 14 million metric tonnes) and value (up to $60 billion) for crustaceans is significant and likely to increase further during the 21st century. Satisfactory management and handling of live crustaceans is important to safeguard the value, security, safety, and sustainability of wild-caught and aquaculture-sourced fisheries, and increasingly to foster improved welfare and public perception of both industries. Decapod crustaceans are frequently transported live and internationally over long distances, and experience anthropogenic stressors from point of capture to point of sale. Physical handling, emersion in air, and temperature fluctuations are key examples of stressors, which elicit progressive behavioral, physiological and immunological stress responses in crustaceans. Stress responses are initiated to return the individual to a state of homeostasis; if these fail, then physiological collapse, a loss of vitality and death will likely occur. There are several ways to ...
LOBSTERS: Invertebrates of the NEPHROPIDAE family of marine crustaceans that existed up to 140 million years ago. In order to grow they shed their exoskeleton up to 25 times in the first 5 - 10 years until adulthood, then once a year if male and once every two years if female. They li...
Found in offshore sediments (Ref. 84225). Members of the class Ostracoda are gonochoric. Sperm transfer is direct. During copulation, male clasps the female dorsally and posteriorly and later on injects its penis between the valves of the female. Eggs may either be attached to a substratum or brooded, where they grow and hatch as nauplii (Ref. 833). ...
basis of record Horne, D.J.; Bruce, A.; Whittaker, J.E. (2001). Ostracoda, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 244-251 (look up in IMIS) [details] ...
Shells ; Mollusks ; Clams ; Corals ; Abalones ; Gasteropoda ; Mussels ; Marine biology ; Cowries ; Sea horses ; Sand-crabs ; Sponges ; Ostracoda ; Sea urchins ; Crabs ; Starfishes ; Biological ...
Brandão, Simone-N. (2014). Bradleya (Quasibradleya) paradictyonites Benson, 1972. In: Brandão, S. N.; Angel, M. V.; Karanovic, I.; Perrier, V. & Yasuhara, M. (2017). World Ostracoda Database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=517537 on 2017-12- ...
Symposium: Tapping the Power of Crustacean Transcriptomes to Address Grand Challenges in Comparative Biology. The NSFs Genomes to Phenomes (G2P) initiative is identifying key questions, such as how genetic mechanisms produce more fit phenotypes (adaptive evolution) and how genotype affects non-linear or non-additive molecular changes to produce a different phenotype. There is an emerging consensus behind the need to understand the mechanisms that govern the genome to phenome continuum, which requires integration across all levels of biological organization. As the product of the genome, a transcriptome is a key driver of phenotype and thus serves as a vital link between genes and the environment. A relatively small number of decapod crustacean species have been intensively studied at the molecular level; their availability, experimental tractability, and economic relevance factor into the selection of a particular species as a model. Transcriptomics, using high-throughput next generation ...
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DOI: /v ANNALES UNIVERSITATIS MARIAE CURIE-SKŁODOWSKA LUBLIN POLONIA VOL. XXX (1) SECTIO EE 2012 Department of Biochemistry and Toxicology University of Life Sciences in Lublin,
Specification of the germ line is an essential event during the embryonic development of sexually reproducing animals, as germ line cells are uniquely capable of giving rise to the next generation. Animal germ cells arise through either inheritance of a specialized, maternally supplied cytoplasm called germ plasm or though inductive signaling by somatic cells. Our understanding of germ cell determination is based largely on a small number of model organisms. To better understand the evolution of germ cell specification, we are investigating this process in the amphipod crustacean Parhyale hawaiensis. Experimental evidence from previous studies demonstrated that Parhyale germ cells are specified through inheritance of a maternally supplied cytoplasmic determinant; however, this determinant has not been identified. Here we show that the one-cell stage Parhyale embryo has a distinct cytoplasmic region that can be identified by morphology as well as the localization of germ line-associated RNAs. Removal
Scilla Maritima.). Natural order.- Liliaceae.. Common name.- Squills.. General Analysis.-. Acts upon the cerebro-spinal nervous system, establishing excessive irritation, which is manifested principally in the respiratory and urinary organs, even to the extent of inflammation.. Characteristic symptoms.. Head.- (Squilla maritima). Cloudy dizziness in the head.. Stitching pain in right side of forehead.. Contractive pain in both temples.. Sudden transient drawing pain in occiput, from left to right.. Eyes.- (Squilla maritima). Contraction of the pupils.. Ears.- (Squilla maritima). Tearing pain behind the left ear.. Nose.- (Squilla maritima). Acrid, corrosive, fluent coryza in the morning ; sneezing, and watering of the eyes. (Ars., Cepa, Euphr.). Sensation of soreness of the margins of the nostrils.. Throat.- (Squilla maritima). Burning in palate and throat.. Irritation and tickling in throat, inducing cough.. Stomach.- (Squilla maritima). Sweet or bitter taste of food.. Insatiable ...
01 3:18 £ , O North Carolina Department of Conservation and Development Division of Mineral Resources Jasper L. Stuckey, State Geologist Bulletin Number 78 Cretaceous Ostracoda From Wells In The Southeastern United States By Frederick M. Swain and Philip M. Brown University of Minnesota, Minneapolis, Minnesota U. S. Geological Survey, Raleigh, North Carolina PREPARED COOPERATIVELY BY THE GEOLOGICAL SURVEY, UNITED STATES DEPARTMENT OF THE INTERIOR 1964 North Carolina Department of Conservation and Development Division of Mineral Resources Jasper L. Stuckey, State Geologist Bulletin Number 78 Cretaceous Ostracoda From Wells In The Southeastern United States By Frederick M. Swain and Philip M. Brown University of Minnesota, Minneapolis, Minnesota U. S. Geological Survey, Raleigh, North Carolina PREPARED COOPERATIVELY BY THE GEOLOGICAL SURVEY, UNITED STATES DEPARTMENT OF THE INTERIOR 1964 MEMBERS OF THE BOARD OF CONSERVATION AND DEVELOPMENT Hargrove Bowles, Jr., Chairman Greensboro John M. Akers ...
01 3:18 £ , O North Carolina Department of Conservation and Development Division of Mineral Resources Jasper L. Stuckey, State Geologist Bulletin Number 78 Cretaceous Ostracoda From Wells In The Southeastern United States By Frederick M. Swain and Philip M. Brown University of Minnesota, Minneapolis, Minnesota U. S. Geological Survey, Raleigh, North Carolina PREPARED COOPERATIVELY BY THE GEOLOGICAL SURVEY, UNITED STATES DEPARTMENT OF THE INTERIOR 1964 North Carolina Department of Conservation and Development Division of Mineral Resources Jasper L. Stuckey, State Geologist Bulletin Number 78 Cretaceous Ostracoda From Wells In The Southeastern United States By Frederick M. Swain and Philip M. Brown University of Minnesota, Minneapolis, Minnesota U. S. Geological Survey, Raleigh, North Carolina PREPARED COOPERATIVELY BY THE GEOLOGICAL SURVEY, UNITED STATES DEPARTMENT OF THE INTERIOR 1964 MEMBERS OF THE BOARD OF CONSERVATION AND DEVELOPMENT Hargrove Bowles, Jr., Chairman Greensboro John M. Akers ...
Branchiopod crustaceans are represented by fairy, tadpole, and clam shrimps (Anostraca, Notostraca, Laevicaudata, Spinicaudata), which typically inhabit temporary freshwater bodies, and water fleas (Cladoceromorpha), which live in all kinds of freshwater and occasionally marine environments [1, 2]. The earliest branchiopods occur in the Cambrian, where they are represented by complete body fossils from Sweden such as Rehbachiella kinnekullensis [3] and isolated mandibles preserved as small carbonaceous fossils [4-6] from Canada. The earliest known continental branchiopods are associated with hot spring environments [7] represented by the Early Devonian Rhynie Chert of Scotland (410 million years ago) and include possible stem-group or crown-group Anostraca, Notostraca, and clam shrimps or Cladoceromorpha [8-10], which differmorphologically fromtheirmodern counterparts [1, 2, 11]. Here we report the discovery of an ephemeral pool branchiopod community from the 365-million-year-old Strud locality ...
This dataset contains the digitized treatments in Plazi based on the original journal article Lum, Kimberly E., Syme, Anna E., Schwab, Anastasia K., Oakley, Todd H. (2008): Euphilomedes chupacabra (Ostracoda: Myodocopida: Philomedidae), a new demersal marine species from coastal Puerto Rico with male-biased vespertine swimming activity. Zootaxa 1684: 35-57, DOI: 10.5281/zenodo.180473 ...
Jarman, S. N., S. Nicol, N. G. Elliott, and A. McMinn. 2000. 28S rDNA evolution in the Eumalacostraca and the phylogenetic position of krill. Molecular Phylogenetics and Evolution 17:26-36.. Martin, J. W. and G. E. Davis. 2001. An updated Classification of the Recent Crustacea. Natural History Museum of Los Angeles County Science Series 39. Los Angeles, CA. Mauchline, J. 1984. Euphausiid, Stomatopod and Leptostracan Crustaceans: Keys and Notes for the Identification of the Species. Synopses of the British Fauna, New Series, no. 30. Estuarine and Brackish-water Sciences Association. Linnean Society of London. E.J Brill / Dr W. Backhuys, Leiden.. Richter, S. and G. Scholtz. 2001. Phylogenetic analysis of the Malacostraca (Crustacea). Journal of Zoological Systematics and Evolutionary Research 39:113-136.. Scholtz, G. 2000. Evolution of the nauplius stage in malacostracan crustaceans. Journal of Zoological Systematics and Evolutionary Research 38:175-187.. Schram, R. F. 1977. Paleozoogeography of ...
mantis shrimp: Any member of the marine crustacean order Stomatopoda, especially members of the genus Squilla. Mantis shrimps are so called because the second pair of limbs are greatly enlarged...
Coloured scanning electron micrograph (SEM) of Pillbug, crustacean, isopod (Armadillidium vulgare). Isopods are omnivores or scavengers feeding on dead or decaying plants or animals. Some may eat live plants. Isopods breathe with gills, so they are restricted to areas with high humidity, under rocks or logs, in leaf litter or in crevices. When disturbed they can roll in to balls to protect themselves (thus the nickname rollie pollie). Magnification x12 when shortest axis printed at 25 millimetres. - Stock Image C032/4199
Crustaceans (Crustacea /krʌˈsteɪʃə/) form a large, diverse arthropod taxon which includes such animals as crabs, lobsters, crayfish, shrimps, prawns, krill, woodlice, and barnacles.[1] The crustacean group can be treated as a subphylum under the clade Mandibulata; because of recent molecular studies it is now well accepted that the crustacean group is paraphyletic, and comprises all animals in the clade Pancrustacea other than hexapods.[2] Some crustaceans are more closely related to insects and the other hexapods than they are to certain other crustaceans. The 67,000 described species range in size from Stygotantulus stocki at 0.1 mm (0.004 in), to the Japanese spider crab with a leg span of up to 3.8 m (12.5 ft) and a mass of 20 kg (44 lb). Like other arthropods, crustaceans have an exoskeleton, which they moult to grow. They are distinguished from other groups of arthropods, such as insects, myriapods and chelicerates, by the possession of biramous (two-parted) limbs, and by their larval ...
Fluorescence of Cypridina oxyluciferin is greatly enhanced when it is bound to luciferase; the spectrum is thereby shifted, so that it corresponds precisely to the emission spectrum characteristic of the bioluminescentoxidation of luciferin. Thus the oxyluciferin-luciferase complex is the lightemitter. The binding is equimolar, with dissociation constant KD equal to 3x 10-7 mole per liter. The molecular weight of the luciferase, according to three different methods, is between 52,000 and 57,000; molecular activities of luciferase for the bioluminescence reaction and for the hydrolysis of oxy-luciferin are 1600 and 2 per minute, respectively. ...
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Joannea Geol. Paläont. 11: (2011) Recent ostracods from the Azores archipelago Ricardo P. MEIRELES, Antonio FRIAS MARTINS & Sérgio ÁVILA The Azores is an archipelago in the Atlantic Ocean between
Re-description of Orchestia stephenseni Cecchini, 1928: designation of neotype and senior synonym to Orchestia constricta A. Costa, 1853 (Crustacea: Amphipoda: Talitridae) by Reversal of Precedence
Amaryllis macrophthalma (Amaryllis/Amaryllididae/Amphipoda/Malacostraca/Arthropoda/Animalia), HMS Challenger (1872-76), Microscope slide
Vilenkin B.Ya; Plotnikova N.A.; Tsygankova L.P., 1981: Regulation of growth rate of young of balanus balanoides crustacea cirripedia in experimental conditions
Crustaceans possess a diverse array of specialized limbs. Although shifts in Hox gene expression domains have been postulated to play a role in generating this limb diversity, little functional data have been provided to understand the precise roles of Hox genes during crustacean development. We used a combination of CRISPR/Cas9-targeted mutagenesis and RNAi knockdown to decipher the function of the six Hox genes expressed in the developing mouth and trunk of the amphipod Parhyale hawaiensis. These experimentally manipulated animals display specific and striking homeotic transformations. We found that abdominal-A (abd-A) and Abdominal-B (Abd-B) are required for proper posterior patterning, with knockout of Abd-B resulting in an animal with thoracic type legs along what would have been an abdomen, and abd-A disruption generating a simplified body plan characterized by a loss of specialization in both abdominal and thoracic appendages. In the thorax, Ubx is necessary for gill development and for ...
Cronin TW, Marshall NJ, Caldwell RL. Photoreceptor spectral diversity in the retinas of squilloid and lysiosquilloid stomatopod crustaceans. Journal of Comparative Physiology A. 1993;172:339-50. ...
These are a few of the pdf files (and a few Microsoft Word documents) that Ive accumulated in my web browsing. MOST of these are hyperlinked to their source. If you want one that is not hyperlinked or if the link isnt working, e-mail me at [email protected] and Ill be happy to send it to you. Please note that this list will be updated continuously as I find more available resources. All of these files are freely available on the Internet so there should be no copyright issues. Articles with author names in RED are new additions since October 27, 2017. Phylum Arthropoda Subphylum Crustacea Class Branchiopoda - Fairy Shrimp, Clam Shrimp and Their Relatives Subclass Phyllopoda Order Lipostraca Scourfield, D.J. (1926). V. On a New Type of Crustacean from the Old Red Sandstone (Rhynie Chert Bed , Aberdeenshire) - Lepidocaris rhyniensis, gen. et sp. nov. Philosophical Transactions B, Vol.CCXIV. Order Notostraca - Tadpole Shrimp Gand, G., et al. (2008). Notostraca trackways in Permian playa ...
Myanmarorchestia victoria sp. nov. (Crustacea, Amphipoda, Talitridae), a new species of landhopper from the high altitude forests in Myanmar
The first antennae of arthropods are divisible into two main types, viz. (1) segmented antennae and (2) annulated antennae. In the first type the antenna consists of a variable number of segments, each having intrinsic musculature. The antennae of the Ohilopoda, Diplopoda, Pauropoda, Symphyla, Collembola, and Thysanura Entognatha all pertain to this type; also, the first antennae of many Copepoda and Ostracoda.. In the second type the antenna consists of a peduncle or protopodite composed of one or more segments, each with intrinsic musculature. Distally it bears an annulated flagellum, or a pair of flagella, devoid of intrinsic muscles and whose movements are effected by muscles originating within the peduncle. The first antennae of the Crustacea Malacostraca and the antennae of the Thysanura Ectognatha and of all the Insecta Pterygota belong to this type.. The greatly elongated antennae of the Schizotarsia are intermediate between these two types. They are composed of an immense number of ...
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PubMed Central Canada (PMC Canada) provides free access to a stable and permanent online digital archive of full-text, peer-reviewed health and life sciences research publications. It builds on PubMed Central (PMC), the U.S. National Institutes of Health (NIH) free digital archive of biomedical and life sciences journal literature and is a member of the broader PMC International (PMCI) network of e-repositories.
Nitrogenous wastes including ammonia-N, nitrite-N, and nitrate-N are increasingly becoming a global issue in aquatic ecosystems due to escalating anthropogenic activities and are a ubiquitous concern in aquaculture. These pollutants are interrelated via the nitrification cycle, with the direct metabolic product ammonia-N generally being the most toxic with high species specificity. Furthermore, while environmental factors influencing nitrogenous waste toxicity are similar, the causative underlying mechanisms are often substantially different. In this review, we focus on decapod crustaceans due to their high commercial value and likelihood of encountering these pollutants in their benthic or near-benthic habitat. While a large body of publications exists in this area, to date a comprehensive literature review on relative toxicities of all three nitrogenous wastes, physiological consequences, and adaptive mechanisms of crustaceans is lacking. Understanding these processes will likely have ...
Crabs arent the only crustaceans in the sea! Barnacles are small, rounded animals generally found on rocky reefs or shores. They are also seen attached to boats. Barnacles have a hard shell, and use their feet to capture small animals called plankton that swim in the oceans. They usually live in large groups, and are sometimes covered up by other sea life. Most barnacles look like rocks, but some, like the Short-stalked Goose Barnacle, are much prettier. Shrimp are also crustaceans. Like crabs, shrimp live near rocks and reefs. They have a longer body rather than a round one, and range from less than an inch to 6 inches in length. Grabhams Cleaner Shrimp has a very important job. It attracts fish with its white antennae and legs. When the fish gets close, it grabs the fish and removes parasites and cleans the fish! There are many other types of crustaceans, like prawns and lobsters ...
This is likewise the case with the Cirripedia, and it is only the wonderful elongation of the anterior part of the head, its fixed condition, and the absence of external eyes and antennæ, which gives to the Cirripedia their peculiar character, and has hitherto prevented the homologies of these parts from having been recognised ...
Being the most numerous, diverse and ubiquitous group of animals, the arthropods have established a wide array of interactions with bacteria. Despite their considerable potential in agriculture, health-care and pest control, exploration of these associations is limited to a few well studied associations (Bourtzis & Miller 2003), while comprehensive understanding of interactions between bacteria and arthropods generally remain underexplored, due to lack of appropriate model organisms. Our work in recent years has been therefore focused on bacterial associations in terrestrial isopod crustaceans (Fig. 1), a diverse and ubiquitous group of arthropods, with considerable ecological role, well-known biology and undemanding maintenance under laboratory conditions.. In order to expand our knowledge on isopod-bacteria associations we used a wide array of microscopic approaches on crustacean tissues including FE-SEM, TEM and fluorescence microscopy with structured illumination in combination with ...
The intercellular relationships in the ommatidia of the lateral eye of Limulus have been investigated. The distal process of the eccentric cell gives origin to microvilli which interdigitate with the microvilli of the retinular cells. Therefore, both types of visual cells contribute to form the rhabdom and may have an analogous photoreceptor function. Quintuple-layered junctions are found within the rhabdom at the lines of demarcation between adjoining microvilli, whether the microvilli originate from a single retinular cell, from two adjacent retinular cells, or from a retinular cell and the eccentric cell. Furthermore, quintuple-layered junctions between the eccentric cell and the tips of the microvilli of the retinular cells occur at the boundary between the distal process and the rhabdom. These findings are interpreted to indicate that the rhabdom provides an extensive electrotonic junction relating retinular cells to one another and to the eccentric cell. Quintuple-layered junctions between ...
Autor: Kreissl, S. et al.; Genre: Zeitschriftenartikel; Im Druck veröffentlicht: 2008; Open Access; Titel: Muscle precursor cells in the developing limbs of two isopods (Crustacea, Peracarida): an immunohistochemical study using a novel monoclonal antibody against myosin heavy chain
Nearly all decapod crustaceans found in Antarctic waters south of the Antarctic Convergence are caridean shrimps (Natantia) while the group of Reptantia is largely absent in this area. Progress in the
This dataset contains the digitized treatments in Plazi based on the original journal article Kilgour, Morgan J., Shirley, Thomas C. (2014): Reproductive biology of galatheoid and chirostyloid (Crustacea: Decapoda) squat lobsters from the Gulf of Mexico. Zootaxa 3754 (4): 381-419, DOI: http://dx.doi.org/10.11646/zootaxa.3754.4.3 ...
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
Easily hatched and reared in the classroom, these marine crustaceans are readily available food for Hydra and fish as well as excellent material to study crustacean anatomy and …
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S.N.S. Bode, S. Adolfson, D.K. Lamatsch, M.J.F. Martins, O. Schmit, J. Vandekerkhove, F. Mezquita, T. Namiotko, G. Rossetti, I. Schön and K. Martens (2010) ...
Hugueney, Marguerite; Berthet, Didier; Bodergat, Anne-Marie; Escuillié, François; Mourer-Chauviré, Cécile & Wattinne, Aurélia (2003). La limite Oligocène-Miocène en Limagne: changements fauniques chez les mammifères, oiseaux et ostracodes des différents niveaux de Billy-Créchy (Allier, France) [The Oligocene-Miocene boundary in Limagne: faunal changes in the mammals, birds and ostracods from the different levels of Billy-Créchy (Allier, France)]. Geobios. 36 (6): 719-731. doi:10.1016/j.geobios.2003.01.002 ...
Information is encoded in neural circuits using both graded and action potentials, converting between them within single neurons and successive processing layers. This conversion is accompanied by information loss and a drop in energy efficiency. We investigate the biophysical causes of this loss of information and efficiency by comparing spiking neuron models, containing stochastic voltage-gated Na+ and K+ channels, with generator potential and graded potential models lacking voltage-gated Na+ channels. We identify three causes of information loss in the generator potential that are the by-product of action potential generation: (1) the voltage-gated Na+ channels necessary for action potential generation increase intrinsic noise and (2) introduce non-linearities, and (3) the finite duration of the action potential creates a footprint in the generator potential that obscures incoming signals. These three processes reduce information rates by ~50% in generator potentials, to ~3 times that of ...
Arnett, R. H. 2000. American Insects: A Handbook of the Insects of America North of Mexico. CRC Press, Boca Raton, Fla.. Beutel, R. G. and S. N. Gorb. 2001. Ultrastructure of attachment specializations of hexapods, (Arthropoda): evolutionary patterns inferred from a revised ordinal phylogeny. Journal of Zoological Systematics and Evolutionary Research 39:177-207.. Bilinski, S. M. 1993. Structure of ovaries and oogenesis in entognathans (Apterygota). International Journal of Insect Morphology & Embryology 22:255-269.. Bitsch, C. and J. Bitsch. 1998. Internal anatomy and phylogenetic relationships among apterygote insect clades (Hexapoda). Annales de la Soci t Entomologique de France 34:339-363.. Bitsch, C. and J. Bitsch. 2000. The phylogenetic interrelationships of the higher taxa of apterygote hexapods. Zoologica Scripta 29:131-156.. Bitsch, C. and J. Bitsch. 2004. Phylogenetic relationships of basal hexapods among the mandibulate arthropods: a cladistics analysis based on comparative ...
A theory of movement perception has been proposed to explain the optomotor responses of the housefly (Musca domestica), and this has been tested by McCann & Maginitie (1965). The present study was made in order to ascertain if the anatomical and physiological properties of the compound eye are commensurate with those postulated by the model. The three properties studied were the inter-ommatidial angle, the receptive field of the retinula cells, and the relationship between light intensity and the magnitude of the generator potential. The angle between the axes of adjacent ommatidia was measured anatomically. This varies with the position in the eye but has a mean value of 3.9° in the horizontal plane and 2.4° in the vertical. During dark adaptation the secondary pigment cells contract by about 5 pm at either end, moving the pigment back away from the lenses and also exposing the focal region of the ommatidium. The receptive field of single retinula cells was measured electrophysiologically. ...
Unidentified Barnacles (Cirripedia). Barnacles photographed in Olympia, WA.. barnaclebeachCirripediacrustaceaninvertebrateoceansandshore ...
Three species of the amphipod genus Syrrhoe are described from the North Atlantic. The differences between these species are primarily the patterns of serration of the posterior margins of pleonite 3 and urosomite 1 and 2: Syrrhoe affinis has a wide convex space on the posterior margin between the epimeron 3 and the dorsal serration. In Syrrhoe crenulata and Syrrhoe anneheleneae sp. nov. there is only a small notch on the posterior margin of pleonite 3. Syrrhoe anneheleneae sp. nov., otherwise similar to S. crenulata, has an additional serration on the posterior margin of urosomite 1. The inter- and intraspecific distances analyzed from COI confirm the morphological species concept of North Atlantic Syrrhoe.
Looking for Cirrhipoda? Find out information about Cirrhipoda. common name of the sedentary crustacean crustacean , primarily aquatic arthropod of the subphylum Crustacea. Most of the 44,000 crustacean species are... Explanation of Cirrhipoda
... is a species of flowering plant known by the common names Malaysian false pimpernel. It is a member of the ... Malaysian false pimpernel flower Pollen "Plants Profile for Lindernia crustacea (Malaysian false pimpernel)". plants.usda.gov. ...
"Calothrix crustacea Schousb. ex Thur". Soft-Bodied Stream Algae of California. Archived from the original on 16 January 2017. ... Calothrix crustacea is a species of cyanobacteria that is widespread in oceans worldwide. Unusually for bacteria, the filaments ...
Crustacea: University of Edinburgh Crustaceans (Crustacea) on the shore of Singapore Crustacea(crabs, lobsters, shrimps, prawns ... 5. Crustacea.net, an online resource on the biology of crustaceans Crustacea: Natural History Museum of Los Angeles County ... Crustaceans portal Pain in crustaceans Calman, William Thomas (1911). "Crustacea" . In Chisholm, Hugh (ed.). Encyclopædia ... Marine crustaceans are as ubiquitous in the oceans as insects are on land. Most crustaceans are also motile, moving about ...
Laura is a genus of crustacean with two species: Laura bicornuta and Laura dorsalis. It is in the family Lauridae. "Catalogue ...
Vir is a genus of shrimp comprising the following species: Vir colemani Bruce, 2003 Vir euphyllius Marin & Anker, 2005 Vir longidactylusa Marin, 2008 Vir orientalis (Dana, 1852) Vir philippinensis Bruce & Svoboda, 1984 Vir smiti Fransen & Holthuis, 2007 Charles Fransen & Sammy De Grave (2011). "Vir Holthuis, 1952". World Register of Marine Species. Retrieved November 23, 2011. v t e (Articles with short description, Short description matches Wikidata, Articles with 'species' microformats, Palaemonoidea, All stub articles, Caridea stubs ...
Smirnov, N.N.; Timms, B.V. (1983). "A Revision of the Australian Cladocera (Crustacea)". Records of the Australian Museum. 35: ... 3. ISBN 978-90-5103-074-7. Olesen, J.ørgen (1998). "A phylogenetic analysis of the Conchostraca and Cladocera (Crustacea, ... Korovchinsky, N.M. (1992). Sididae and Holopediidae (Crustacea: Daphniiformes). Guides to the Identification of the ...
Tanais is a genus of malacostracans in the family Tanaididae. There are about 11 described species in Tanais. These 11 species belong to the genus Tanais: Tanais dulongii (Audouin, 1826) i c g b Tanais gayi Nicolet, 1849 i c g Tanais grimaldii Dollfus, 1897 i c g Tanais loricatus Bate, 1864 i c g Tanais macrocheles Nicolet, 1849 i c g Tanais nuwalianensis Tzeng & Hsueh, 2014 c g Tanais pongo Bamber, 2005 c g Tanais portiatius i g Tanais tenuicornis (Haswell, 1882) i Tanais tinhauae Bamber and Bird, 1997 i c g Tanais vanis M. A. Miller, 1940 i c g Data sources: i = ITIS, c = Catalogue of Life, g = GBIF, b = Bugguide.net "Tanais Report". Integrated Taxonomic Information System. Retrieved 2018-05-06. "Browse Tanais". Catalogue of Life. Retrieved 2018-05-06. "Tanais". GBIF. Retrieved 2018-05-06. "Tanais Genus Information". BugGuide.net. Retrieved 2018-05-06. v t e (Articles with short description, Short description matches Wikidata, Articles with 'species' microformats, Tanaidacea, Malacostraca ...
Igawa, Momoko; Kato, Makoto (20 September 2017). "A new species of hermit crab, Diogenes heteropsammicola (Crustacea, Decapoda ...
Macpherson E, Jones W, Segonzac M (2006). "A new squat lobster family of Galatheoidea (Crustacea, Decapoda, Anomura) from the ... Journal of Crustacean Biology. 36 (2): 238-247. doi:10.1163/1937240x-00002418. Rebecca Morelle (December 28, 2011). "Deep-sea ... Crustacea: Decapoda: Anomura)". Contributions to Zoology. 85 (4): 361-386. doi:10.1163/18759866-08504001. Data related to Kiwa ...
ISBN 978-0-643-06791-2. L. R. Richardson and J. C. Yaldwyn (1958). "A guide to the natant decapod Crustacea (shrimps and prawns ... Gary C. B. Poore & Shane T. Ahyong (2004). "Hippolytidae Bate, 1888". Marine decapod Crustacea of southern Australia: a guide ... ISBN 978-0-643-06906-0. P. J. F. Davie (2002). "Hippolytidae Bate, 1888". Crustacea: Malacostraca: Phyllocarida, Hoplocarida, ...
Gary C. B. Poore & Shane T. Ahyong (2004). Marine decapod Crustacea of southern Australia: a guide to identification. CSIRO ... 2009). "A classification of living and fossil genera of decapod crustaceans" (PDF). Raffles Bulletin of Zoology. Suppl. 21: 1- ... Crustacea: Decapoda)". Zoological Journal of the Linnean Society. 178: 15-32. doi:10.1111/zoj.12398. (CS1: long volume value, ...
Michel E. Henrickx & Alan W. Harvey (1998). "Checklist of Anomuran Crabs (Crustacea: Decapoda) from the Eastern Tropical ...
Freshwater and Terrestrial Isopod Crustaceans database. World Register of Marine Species. Retrieved 4 March 2016. F. Ferrara & ...
Hyperia is a genus of amphipods in the family Hyperiidae. It contains the following species: Hyperia bowmani M. Vinogradov, 1976 Hyperia crassa Bowman, 1973 Hyperia curticephala M. Vinogradov & Semenova, 1985 Hyperia fabrei H. Milne Edwards, 1830 Hyperia galba Montagu, 1815 Hyperia gaudichaudii H. Milne Edwards, 1840 Hyperia leptura Bowman, 1973 Hyperia macrocephala Dana, 1853 Hyperia medusarum Müller, 1776 Hyperia spinigera Bovallius, 1889 "Hyperia". Integrated Taxonomic Information System. Bellan-Santini, Denise; Lowry, Jim (2010). "Hyperia Latreille, 1823". WoRMS. World Register of Marine Species. {{cite web}}: ,access-date= requires ,url= (help); Missing or empty ,url= (help) v t e (CS1 errors: requires URL, CS1 errors: access-date without URL, Articles with short description, Short description matches Wikidata, Articles with 'species' microformats, Hyperiidea, Taxa named by Anselme Gaëtan Desmarest, Malacostraca genera, All stub articles, Amphipod stubs ...
Kelleria is a genus of cyclopoid copepods in the family Kelleriidae, the sole genus in the family. There are about 19 described species in Kelleria. These 19 species belong to the genus Kelleria: Kelleria andamanensis Sewell, 1949 Kelleria australiensis Bayly, 1971 Kelleria camortensis Sewell, 1949 Kelleria corioensis Arnott & McKinnon, 1981 Kelleria gradata Stock, 1967 Kelleria grandisetiger Kim I.H., 2006 Kelleria gurneyi Sewell, 1949 Kelleria indonesiana Mulyadi, 2009 Kelleria javaensis Mulyadi, 2009 Kelleria multiovigera Kim I.H., 2009 Kelleria pectinata (Scott A., 1909) Kelleria portiviva Kim I.H., 2006 Kelleria propinquus (Scott T., 1894) Kelleria purpurocincta Gurney, 1927 Kelleria reducta Gómez, 2006 Kelleria regalis Gurney, 1927 Kelleria rubimaculata Krishnaswamy, 1952 Kelleria undecidentata Kim I.H., 2006 Kelleria vaga Kim I.H., 2000 "Kelleria Report". Integrated Taxonomic Information System. Retrieved 2020-01-26. "Kelleria". GBIF. Retrieved 2020-01-26. v t e (Articles with short ...
Maera is a genus of crustacean in the family Maeridae, and was first described by William Elford Leach in 1814. It consists of ...
Scottia is a genus of ostracods in the family Cyprididae. Extant species: Scottia audax Scottia birigida Scottia insularis Scottia pseudobrowniana Fossil species: †Scottia bonei †Scottia browniana †Scottia candonaeformis †Scottia dacica †Scottia kempfi †Scottia tumida Brady, G.S. & Norman, A.M. 1889: A monograph of the marine and freshwater Ostracoda of the North Atlantic and of north-western Europe. Section I: Podocopa. The Scientific Transactions of the Royal Dublin Society (Series 2), 4 (2), pages 63-270. Data related to Scottia at Wikispecies Scottia at lbm.go.jp v t e (Articles with short description, Short description is different from Wikidata, Articles with 'species' microformats, Cyprididae, Podocopida genera, All stub articles, Crustacean stubs ...
"First record of Puerulus mesodontus Chan, Ma & Chu, 2013 (Crustacea, Decapoda, Achelata, Palinuridae) from south of Java, ...
Automate is a genus of pistol shrimp of the family Alpheidae, containing the following species: Automate anacanthopus de Man, 1910 Automate branchialis Holthuis & Gottlieb, 1958 Automate dolichognatha de Man, 1888 Automate evermanni Rathbun, 1901 Automate hayashii Anker & Komai, 2004 Automate rectifrons Chace, 1972 Automate rugosa Coutière, 1902 Automate salomoni Coutière, 1908 Automate talismani Coutière, 1902 Sammy De Grave & Michael Türkay (2010). "Automate de Man, 1888b". World Register of Marine Species. Retrieved November 16, 2011. v t e (Articles with short description, Short description matches Wikidata, Articles with 'species' microformats, Alpheidae, Taxa named by Johannes Govertus de Man, Decapod genera, All stub articles, Caridea stubs ...
Crustacea: Decapoda)". Zoological Journal of the Linnean Society. 178: 15-32. Gary C. B. Poore (2004). Marine Decapod Crustacea ...
Thorella is a genus of shrimp belonging to the family Hippolytidae. The species of this genus are found in Southeastern Asia and Australia. Species: Thorella cobourgi Bruce, 1982 "Thorella Bruce, 1982". www.gbif.org. Retrieved 24 March 2021. (Articles with short description, Short description matches Wikidata, Articles with 'species' microformats, Hippolytidae, Decapod genera ...
Keenan, Clive P.; Davie, Peter J.F.; Mann, David L. (1998). "A revision of the genus Scylla de Haan, 1833 (Crustacea: Decapoda ...
Triangulus is a genus of parasitic barnacles in the family Triangulidae, the sole genus of the family. There are at least four described species in Triangulus. These species belong to the genus Triangulus: Triangulus bilobatus (Boschma, 1925) Triangulus cornutus (Boschma, 1935) Triangulus munidae Smith, 1906 Triangulus papilio (Kossmann, 1872) "Triangulus". GBIF. Retrieved 2021-09-01. "World Register of Marine Species, genus Triangulus". Retrieved 2021-09-01. Chan, Benny K. K.; Dreyer, Niklas; Gale, Andy S.; Glenner, Henrik; et al. (2021). "The evolutionary diversity of barnacles, with an updated classification of fossil and living forms". Zoological Journal of the Linnean Society. doi:10.1093/zoolinnean/zlaa160. v t e (Articles with 'species' microformats, Taxonbars on possible non-taxon pages, Taxonbars without primary Wikidata taxon IDs, Barnacles, All stub articles, Crustacean stubs ...
Dardanus is a genus of hermit crabs belonging to the Diogenidae family. This genus contains the following species: Dardanus arrosor (Herbst, 1796) Dardanus aspersus (Berthold, 1846) Dardanus australis Forest & Morgan, 1991 Dardanus brachyops Forest, 1963 Dardanus calidus (Risso, 1827) Dardanus callichela Cook, 1989 Dardanus corrugatus Cook, 1989 Dardanus crassimanus (H. Milne-Edwards, 1836) Dardanus dearmatus Henderson, 1888 Dardanus deformis H. Milne-Edwards, 1836 Dardanus fucosus Biffar & Provenzano, 1972 Dardanus gemmatus (H. Milne-Edwards, 1836) Dardanus guttatus (Olivier, 1812) Dardanus hessii (Miers, 1884) Dardanus imbricatus (H. Milne-Edwards, 1848) Dardanus imperator (Miers, 1881) Dardanus impressus (De Haan, 1849) Dardanus insignis (de Saussure, 1858) Dardanus jacquesi Asakura & Hirayama, 2002 Dardanus janethaigae Ayon & Hendrickx, 2009 Dardanus jordani Schmitt, 1921 Dardanus lagopodes (Forskål, 1775) Dardanus longior Asakura, 2006 Dardanus magdalenensis Ayon & Hendrickx, 2009 Dardanus ...
Crustacea, Decapoda) from the tropical western Pacific". Zootaxa. 2839: 67-84. doi:10.11646/zootaxa.2839.1.3. Sammy De Grave & ...
Wikimedia Commons has media related to Temora. Temora is a genus of copepods in the family Temoridae. The World Register of Marine Species lists the following species: Temora discaudata Giesbrecht, 1889 Temora kerguelensis Wolfenden, 1911 Temora longicornis (Müller O.F., 1785) Temora stylifera (Dana, 1849) Temora turbinata (Dana, 1849) Additionally, Temora curta (Dana, 1849) is considered a taxon inquirendum. A number of species previously included in this genus have been moved to the Eurytemora genus: Temora affinis Poppe, 1880 and Temora inermis Boeck, 1865 (now Eurytemora affinis affinis Poppe, 1880) Temora clausii Hoek, 1878 and Temora velox Lilljeborg, 1853 (now Eurytemora velox (Lilljeborg, 1853)) T. Chad Walter (2015). Walter TC, Boxshall G (eds.). "Temora Baird, 1850". World of Copepods database. World Register of Marine Species. Retrieved 6 April 2018. v t e (Articles with short description, Short description matches Wikidata, Articles with 'species' microformats, Commons category link ...
Carboniferous crustaceans, Fossils of Russia, Fossils of the United States, All stub articles, Crustacean stubs, Prehistoric ... Carbonita is an extinct genus of nonmarine ostracod crustaceans that lived during the Carboniferous period. The genus contains ...
Tin-Yam Chan (2010). Martyn E. Y. Low; S. H. Tan (eds.). "Annotated checklist of the world's marine lobsters (Crustacea: ... Alessandro Garassino & Antonio De Angeli (2003). "Justitia Holthuis, 1946 (Crustacea, Decapoda, Palinuridea) from the Middle ...
Alpheus is a genus of snapping shrimp of the family Alpheidae. This genus contains in excess of 291 species, making this the most species-rich genus of shrimp. Like other snapping shrimp, the claws of Alpheus are asymmetrical, with one of the claws enlarged for making a popping noise. Some species in the genus enter into symbiotic relationships with gobiid fishes, and others associate with sea anemones. It's also the noisiest of all sea creatures and can immobilize small fish with its high pitched frequency. The following species are included: Alpheus acutocarinatus De Man, 1909 Alpheus acutofemoratus Dana, 1852 Alpheus adamastor Coutière, 1908 Alpheus aequus W. Kim & Abele, 1988 Alpheus agilis Anker, Hurt & Knowlton, 2009 Alpheus agrogon Ramos, 1997 Alpheus albatrossae (Banner, 1953) Alpheus alcyone De Man, 1902 Alpheus alpheopsides Coutière, 1905 Alpheus amblyonyx Chace, 1972 Alpheus amirantei Coutière, 1908 Alpheus anchistus De Man, 1920 Alpheus angulosus McClure, 2002 Alpheus ...
Crustaceans portal Ichthyoplankton Marine larval ecology Robert Gurney (1942). Larvae of decapod crustacea (PDF). London: Ray ... The larvae of crustaceans often bear little resemblance to the adult, and there are still cases where it is not known what ... Young isopod crustaceans hatch directly into a manca stage, which is similar in appearance to the adult. The lack of a free- ... Every other crustacean group with free larvae shows a metamorphosis, and this difference in the larvae is thought to reflect "a ...
Crustacea, Zoogeography. Publisher. Philadelphia, Printed by C. Sherman. Collection. biodiversity; smithsonian. Digitizing ... Crustacea by. Dana, James Dwight, 1813-1895; United States. Dept. of State. Library, former owner. DSI. ... Crustacea. By James D. Dana ... By authority of Congress. Philadelphia, C. Sherman, printer, 1855. "After the engraving of the ... On the geographical distribution of Crustacea: p. [1451]-1592. Includes index. Works and memoirs consulted in preparation of ...
Other articles where Derocheilocaris typicus is discussed: mustache shrimp: D. typicus occurs on the Atlantic coast of northeastern United States. D. remani is found on the coasts of Europe and Africa.
crab crustacean ocean sea creature food clipart icon vector silhouette Safe for Work?. Yes. Download. SVG (Vector) PNG (Bitmap) ... crustacean by cactus cowboy - uploaded on December 11, 2018, 9:02 pm ...
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... was 10762670 US Dollars. Discover more data with NationMaster! ... Finland - Processed Crustaceans Imports US Dollars - 1995 to 2019. Since 2014, Finland Processed Crustaceans Imports decreased ... How does Finland rank in Processed Crustaceans Imports?. #. 49 Countries. US Dollars. Last. YoY. 5‑years CAGR. ... With $10,762,669.55 in 2019, the country was ranked number 40 among other countries in Processed Crustaceans Imports. Finland ...
Crustaceans have segmented bodies like insects! Their bodies are divided three sections - the head, the thorax, and the abdomen ... There are over 31,500 living species of crustaceans. Most species are found in the ocean, but some are found in fresh water and ... Crustaceans dont have spines; they are invertebrates and breathe through gills. ... Crustacea - The Crustaceans. Crustaceans dont have spines; they are invertebrates and breathe through gills. Crustaceans have ...
It is the first larval stage that emerges from the egg and the earliest free-swimming phase in crustacean development. ... The nauplius is a larval form common to many species of crustaceans. ... Nauplius (Crustacea) Videos. Nauplius (Crustacea) Videos. The nauplius is the most primitive crustacean larval type found in ... making the nauplius extremely useful as a key feature that unites the entire subphylum Crustacea. However, many crustaceans ...
The best general introduction to the study of the Crustacea is T. H. Huxley, The Crayfish: An Introduction to the Study of ... The smallest crustaceans have little or none in the skeleton, but in all of the larger forms it is present in greater or less ... Classification of the Crustacea is based upon the number and manner of consolidation of the segments of the body, and upon the ... CRUSTACEA (Neo-Lat. nom. pl., from Lat. crusta, crust). A class of gill-bearing aquatic arthropods, differing from other ...
Also, if you want more Crustacea-adjacent content, check out One Night at Kedasi, Ive posted the first few chapters and plan ... Recently, I Kickstarted The First Ambassador to Crustacea, a novella that started (and is still available) on this site! First ...
Tag: coral and crustaceans. Coral and Crustaceans Cant Calcify Due to Acids From CO2. The loss of coral reefs around the world ... and the resulting acid that is keeping the reefs and other crustaceans from calcifying. ...
Tag: crustaceans. Evolution Genetics Intelligent Design Tiny crustacean, 100 mya, had giant sperm. It would be interesting to ...
Journal of Crustacean Biology publishes papers on crustacean biology and other marine arthropods, biographies of renowned ... Amphipods, like most swimming crustaceans, employ a drag-based mechanism to produce thrust. The propulsors are paddle-shaped ... The status of Austropotamobius berndhauseri (Crustacea, Decapoda) was re-examined by the combination of two recent genetic ... Examination of 32 species from seven families of marine asellote isopods (Crustacea, Malacostraca) showed that 15 of these ...
"Crustacean (arthropod)". Encyclopædia Britannica.. *↑ Aiken D.E (2011). "Crustacean". The Canadian Encyclopedia. contributors: ... The Crustacea are a subphylum of arthropods with 67,000 described species. They are part of the phylum Arthropoda. Crustaceans ... Crustaceans that live on land include some crabs, and woodlice. Crustacea range in size from a parasite 0.1mm long, to the ... Most crustaceans are mobile, but some become sessile after their larval stage. Barnacles are crustacea which become attached to ...
Crustacean is their first concept album, and showcases their musical depth - from future electroclash classics via experimental ... Crustacean is their first concept album, and showcases their musical depth - from future electroclash classics via experimental ...
Crustaceans. Global Landline Personal Emergency Response Systems Market Analysis, Growth, Demand Future Forecast 2028. Global ...
Mesolimulus walchi (DESM.)Fossil horseshoe crabUpper JurassicSolnhofen, Bavaria, Germanyapprox. 4,5 x 6,5 cmThe castings are manufactured in our business with resin and hand-colored. Therefore, it may be that the picture is a little different from the delivered item ...
Ortiz L H G R, Reyes-Bonilla H, plazi (2013). Coral-associated decapods (Crustacea) from the Mexican Tropical Pacific coast. ... Coral-associated decapods (Crustacea) from the Mexican Tropical Pacific coast Dataset homepage ... Crustacea) from the Mexican Tropical Pacific coast. Zootaxa 3609 (5): 451-464, DOI: http://dx.doi.org/10.11646/zootaxa.3609.5.1 ...
... makes Crustacean Meal a perfect general fertilizer for tomato growers. ... Derived from crab shells, shrimp shells and crab meal, Shellfish Fertilizer - a.k.a. Crustacean Meal - is a natural source of ...
A billboard touting PETAs push to promote humane treatment of all living creatures, specifically crabs, was erected recently in Baltimore. Aimed at an upcoming seafood festival, the billboard reads, Im me, not meat. See the individual. Go vegan.
Crustacean homologs exist for many major proteins in the apoptotic networks of mammals and D. melanogaster, but integration of ... Whether apoptosis in crustaceans is mainly transcriptionally regulated as in D. melanogaster (e.g., RHG „killer‟ proteins), or ... Recent work with crustaceans shows that apoptotic proteins, and presumably mechanisms of cell death regulation, are more ... We speculate that differences in regulation of the intrinsic pathway of crustacean apoptosis might represent a prerequisite for ...
A popular history of British Crustacea; comprising a familiar account of their classification and habits ... A popular history of British Crustacea; comprising a familiar account of their classification and habits ...
Crustaceans are more commonly known as lobster, crab, prawns and crayfish. Once youve learned how to cook your first batch of ... In this course, you will be preparing gourmet crustacean-infused dishes with our cuisine Chef experts. ... crustaceans, you will see just how easy it is to enjoy these delectable in your own kitchen. ... Learn the techniques to cleaning, preparing and cooking crustaceans. Crustaceans are more commonly known as lobster, crab, ...
New Zealand crustaceans. Most of the major crustacean groups are found in New Zealand waters, though many warm-water groups are ... Crustacean groups. The most recent classification of crustaceans comprises six classes. One of these (the cave-dwelling ... Niel Bruce and Alison MacDiarmid, Crabs, crayfish and other crustaceans - Crustaceans - bugs of the sea, Te Ara - the ... Crustaceans show a greater diversity of body form than any other animal group, and include worm-like slaters (isopods), short- ...
Coleoptera and other insects of Israel.
UAE: Student Discovers New Type Of Crustacean In Abu Dhabi, MENAFN.COM. .navbar-collapse.collapse { display: block !important; ... or crustaceans - are intensified globally in freshwater ecosystems. However, animals or crustaceans in particular in some ... Al Neyadi indicated that her choice to study the crustacean Cladocera in particular, is due to the lack of scientific ... especially since crustaceans can be used as a safe and sustainable food in fisheries projects and fish farming, as marine food ...
From crustaceans (yup, really) to Star Trek-worthy lasers to killer viruses, heres the latest in fighting acne. ... Crustaceans:. OK now how about what's coming down the pipeline? A new study published in the Journal of Investigative ... From crustaceans (yup, really) to Star Trek-worthy lasers to killer viruses, here's the latest in fighting acne. ... From Crustaceans to Killer Viruses, Heres Whats New in Acne Treatment. We know from experience: Acne is persistent, recurrent ...
The blue crab, a species of crustaceans which originally came from the Red Sea through the Suez Canal, appeared, for the first ... Contribution to the knowledge of the biology of the spider crab Maja crispata Risso, 1827 (Crustacea.... December 2016 · ... In juvenile, sub-adult and adult crabs, crustaceans constituted the dominant food source and these were present in more than 65 ... The stomach contents appeared to consist mainly of large quantities of crustaceans, fish and molluscs, and small quantities of ...
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