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Panopeidae
The Panopeidae are a family containing 26 genera of morphologically similar crabs, often known as "mud crabs". Their centers of diversity are the Atlantic Ocean and eastern Pacific Ocean. Distribution Most members of the family Panopeidae live in the Atlantic Ocean or eastern Pacific Ocean. Only one species occurs in Australian waters – '' Homoioplax haswelli''. Ecology The various genera of the Panopeidae are morphologically similar, partly as a result of many instances of convergent evolution to similar habitats and food preferences. Crabs of the family Panopeidae are all free-living (not commensal or parasitic), and typically live in soft-bottomed parts of the ocean, lending them the common name "mud crabs" (a name also shared by other organisms). They burrow into the sediment and feed on a variety of marine invertebrates. Genera The World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authorita ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dyspanopeus Sayi
''Dyspanopeus sayi'' is a species of mud crab that is native to the Atlantic coast of North America. It has also become established outside its native range, living in Swansea Docks since 1960, the Mediterranean Sea since the 1970s, the North Sea since 2007 and the Black Sea since 2010. It can reach a carapace width of , and has black tips to its unequal claws. It feeds on bivalves and barnacles, and is in turn eaten by predators including the Atlantic blue crab, ''Callinectes sapidus''. Eggs are produced from spring to autumn, the offspring reach sexual maturity the following summer, and individuals can live for up to two years. The closest relative of ''D. sayi'' is '' D. texanus'', which lives in the Gulf of Mexico; the two species differ in subtle features of the genitalia and the last pair of walking legs. Description ''Dyspanopeus sayi'' is a small crab, similar in appearance to '' Eurypanopeus depressus''. It reaches a maximum carapace width of , with sexually ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 world's oceans, in freshwater, and on land, are generally covered with a thick exoskeleton, and have a single pair of pincers. They first appeared during the Jurassic Period. Description Crabs are generally covered with a thick exoskeleton, composed primarily of highly mineralized chitin, and armed with a pair of chelae (claws). Crabs vary in size from the pea crab, a few millimeters wide, to the Japanese spider crab, with a leg span up to . Several other groups of crustaceans with similar appearances – such as king crabs and porcelain crabs – are not true crabs, but have evolved features similar to true crabs through a process known as carcinisation. Environment Crabs are found in all of the world's oceans, as well as in fresh w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mud Crab (other)
Mud crab may refer to any crab that lives in or near mud, such as: *''Scylla serrata'' *''Scylla tranquebarica'' *''Scylla paramamosain'' *''Scylla olivacea'' *Members of the family Panopeidae, such as ''Panopeus herbstii'' *Members of the family Xanthidae *''Helice crassa'', the tunnelling mud crab The tunnelling mud crab, ''Austrohelice crassa'', is a marine (ocean), marine large-eyed crab of the family (biology), family Grapsidae, endemism, endemic to the sea coasts of New Zealand. Their carapace width is up to 40 mm. References E ... {{animal common name Crabs ja:ノコギリガザミ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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