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Brachynotus
''Brachynotus'' is a genus of crabs, comprising the following species: *''Brachynotus atlanticus'' Forest, 1957 *''Brachynotus foresti'' Zariquiey Alvarez, 1968 *''Brachynotus gemmellari'' (Rizza, 1839) *''Brachynotus gemmellaroi'' (Rizza, 1839) *''Brachynotus sexdentatus'' (Risso, 1827) *''Brachynotus spinosus ''Brachynotus'' is a genus of crab Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (abdomen) ( el, βραχύς , translit=brachys = short, / = tail), usually hidden entirely ...'' (H. Milne-Edwards, 1853) References Grapsoidea {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brachynotus Sexdentatus
''Brachynotus sexdentatus'' is a species of crab in the family Varunidae. It is native to the Mediterranean Sea and Black Sea, and became established for a time in Swansea Docks (United Kingdom). It grows to a maximum carapace width of , and lives in shallow water on muddy bottoms. Description ''Brachynotus sexdentatus'' is a small crab, reaching a maximum carapace width of , but typically less than . The front of the carapace has two lobes and three lateral teeth on each side, each ending in a sharp point. The whole animal is olive green, with speckling in black, with the legs slightly paler or greyer. The claws are of similar side on either side of the body, but are much larger in males than in females. Ecology and life cycle ''Brachynotus sexdentatus'' lives in shallow water on muddy bottoms, at depths of up to . The eggs of ''B. sexdentatus'' are in diameter, and dark brown in colour. They are produced between February and October. After hatching, the larvae of ''B.&n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brachynotus Atlanticus
''Brachynotus'' is a genus of crabs, comprising the following species: *'' Brachynotus atlanticus'' Forest, 1957 *'' Brachynotus foresti'' Zariquiey Alvarez, 1968 *'' Brachynotus gemmellari'' (Rizza, 1839) *'' Brachynotus gemmellaroi'' (Rizza, 1839) *'' Brachynotus sexdentatus'' (Risso, 1827) *''Brachynotus spinosus ''Brachynotus'' is a genus of crab Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (abdomen) ( el, βραχύς , translit=brachys = short, / = tail), usually hidden entirely ...'' (H. Milne-Edwards, 1853) References Grapsoidea {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brachynotus Foresti
''Brachynotus'' is a genus of crabs, comprising the following species: *''Brachynotus atlanticus'' Forest, 1957 *'' Brachynotus foresti'' Zariquiey Alvarez, 1968 *'' Brachynotus gemmellari'' (Rizza, 1839) *'' Brachynotus gemmellaroi'' (Rizza, 1839) *'' Brachynotus sexdentatus'' (Risso, 1827) *''Brachynotus spinosus ''Brachynotus'' is a genus of crab Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (abdomen) ( el, βραχύς , translit=brachys = short, / = tail), usually hidden entirely ...'' (H. Milne-Edwards, 1853) References Grapsoidea {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brachynotus Gemmellari
''Brachynotus'' is a genus of crabs, comprising the following species: *''Brachynotus atlanticus'' Forest, 1957 *''Brachynotus foresti'' Zariquiey Alvarez, 1968 *'' Brachynotus gemmellari'' (Rizza, 1839) *''Brachynotus gemmellaroi'' (Rizza, 1839) *''Brachynotus sexdentatus'' (Risso, 1827) *''Brachynotus spinosus ''Brachynotus'' is a genus of crab Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (abdomen) ( el, βραχύς , translit=brachys = short, / = tail), usually hidden entirely ...'' (H. Milne-Edwards, 1853) References Grapsoidea {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brachynotus Gemmellaroi
''Brachynotus'' is a genus of crabs, comprising the following species: *''Brachynotus atlanticus'' Forest, 1957 *''Brachynotus foresti'' Zariquiey Alvarez, 1968 *'' Brachynotus gemmellari'' (Rizza, 1839) *'' Brachynotus gemmellaroi'' (Rizza, 1839) *'' Brachynotus sexdentatus'' (Risso, 1827) *''Brachynotus spinosus ''Brachynotus'' is a genus of crab Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (abdomen) ( el, βραχύς , translit=brachys = short, / = tail), usually hidden entirely ...'' (H. Milne-Edwards, 1853) References Grapsoidea {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brachynotus Spinosus
''Brachynotus'' is a genus of crab Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (abdomen) ( el, βραχύς , translit=brachys = short, / = tail), usually hidden entirely under the thorax. They live in all the ...s, comprising the following species: *'' Brachynotus atlanticus'' Forest, 1957 *'' Brachynotus foresti'' Zariquiey Alvarez, 1968 *'' Brachynotus gemmellari'' (Rizza, 1839) *'' Brachynotus gemmellaroi'' (Rizza, 1839) *'' Brachynotus sexdentatus'' (Risso, 1827) *'' Brachynotus spinosus'' (H. Milne-Edwards, 1853) References Grapsoidea {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Varunidae
The Varunidae are a family of thoracotrematan crabs. The delimitation of this family, part of the taxonomically confusing Grapsoidea, is undergoing revision. For a long time, they were placed at the rank of subfamily in the Grapsidae, but they appear to be closest to '' Macropthalmus'' and the Mictyridae, which are usually placed in the Ocypodoidea. It may thus be better to merge the latter superfamily with the Grapsoidea, retaining the latter name as it is older. That notwithstanding, the revision of the Grapsoidea (in the narrow but apparently still paraphyletic sense) is also not fully completed, as many taxa remain to be restudied. Already, several former Grapsidae genera have been moved to the Varunidae, and others are tentatively placed here pending detailed study. Among the most noteworthy of these is the Chinese mitten crab, ''Eriocheir sinensis''. The genus '' Xenograpsus'', formerly included in the Varunidae, is now placed in its own family, the Xenograpsidae. The foll ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal
Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motility, able to move, can Sexual reproduction, reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of Cell (biology), cells, the blastula, during Embryogenesis, embryonic development. Over 1.5 million Extant taxon, living animal species have been Species description, described—of which around 1 million are Insecta, insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have Ecology, complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a Symmetry in biology#Bilate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthropod
Arthropods (, (gen. ποδός)) are invertebrate animals with an exoskeleton, a Segmentation (biology), segmented body, and paired jointed appendages. Arthropods form the phylum Arthropoda. They are distinguished by their jointed limbs and Arthropod cuticle, cuticle made of chitin, often Mineralization (biology), mineralised with calcium carbonate. The arthropod body plan consists of segments, each with a pair of appendages. Arthropods are bilaterally symmetrical and their body possesses an exoskeleton, external skeleton. In order to keep growing, they must go through stages of moulting, a process by which they shed their exoskeleton to reveal a new one. Some species have wings. They are an extremely diverse group, with up to 10 million species. The haemocoel, an arthropod's internal cavity, through which its haemolymph – analogue of blood – circulates, accommodates its interior Organ (anatomy), organs; it has an open circulatory system. Like their exteriors, the internal or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crustacean
Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group can be treated as a subphylum under the clade Mandibulata. It is now well accepted that the hexapods emerged deep in the Crustacean group, with the completed group referred to as Pancrustacea. Some crustaceans (Remipedia, Cephalocarida, Branchiopoda) 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 , to the Japanese spider crab with a leg span of up to and a mass of . 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 th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malacostraca
Malacostraca (from New Latin; ) is the largest of the six classes of crustaceans, containing about 40,000 living species, divided among 16 orders. Its members, the malacostracans, display a great diversity of body forms and include crabs, lobsters, crayfish, shrimp, krill, prawns, woodlice, amphipods, mantis shrimp, tongue-eating lice and many other less familiar animals. They are abundant in all marine environments and have colonised freshwater and terrestrial habitats. They are segmented animals, united by a common body plan comprising 20 body segments (rarely 21), and divided into a head, thorax, and abdomen. Etymology The name Malacostraca was coined by a French zoologist Pierre André Latreille in 1802. He was curator of the arthropod collection at the National Museum of Natural History in Paris. The name comes from the Greek roots (', meaning "soft") and (', meaning "shell"). The name is misleading, since the shell is soft only immediately after moulting, and is u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Decapoda
The Decapoda or decapods (literally "ten-footed") are an order of crustaceans within the class Malacostraca, including many familiar groups, such as crabs, lobsters, crayfish, shrimp and prawns. Most decapods are scavengers. The order is estimated to contain nearly 15,000 species in around 2,700 genera, with around 3,300 fossil species. Nearly half of these species are crabs, with the shrimp (about 3,000 species) and Anomura including hermit crabs, porcelain crabs, squat lobsters (about 2500 species) making up the bulk of the remainder. The earliest fossil decapod is the Devonian ''Palaeopalaemon''. Anatomy Decapods can have as many as 38 appendages, arranged in one pair per body segment. As the name Decapoda (from the Greek , ', "ten", and , '' -pod'', "foot") implies, ten of these appendages are considered legs. They are the pereiopods, found on the last five thoracic segments. In many decapods, one pair of these "legs" has enlarged pincers, called chelae, with the legs be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
