|
Swimming Crab
Portunidae is a family of crabs which contains the swimming crabs. Description Portunid crabs are characterised by the flattening of the fifth pair of legs into broad paddles, which are used for swimming. This ability, together with their strong, sharp claws, allows many species to be fast and aggressive predators. Examples Its members include many well-known shoreline crabs, such as the European shore crab (''Carcinus maenas''), blue crab (''Callinectes sapidus''), and velvet crab ('' Necora puber''). Two genera in the family are contrastingly named ''Scylla'' and ''Charybdis''; the former contains the economically important species black crab ('' Scylla serrata'') and '' Scylla paramamosain''. Taxonomy The circumscription of the family varies, with some authors treating "Carcinidae", "Catoptridae" and "Macropipidae" as separate families, and others considering them subfamilies of a wider Portunidae. Swimming crabs reach their greatest species diversity in the Pacific and India ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liocarcinus Depurator
''Liocarcinus depurator'', sometimes called the harbour crab or sandy swimming crab, is a species of crab found in the North Sea, Atlantic Ocean, Mediterranean Sea, and Black Sea. It grows up to in width and long, and can be distinguished from other crabs, such as the shore crab ''Carcinus maenas'', by the curved rows of white spots on its carapace. The species was first described by Carl Linnaeus in 1758, in his 10th edition of ''Systema Naturae''. It has a synonym, ''Portunus plicatus'', which was given by Antoine Risso Giuseppe Antonio Risso (8 April 1777 – 25 August 1845), called Antoine Risso, was a Niçard and natural history, naturalist. Risso was born in the city of Nice in the Duchy of Savoy, and studied under Giovanni Battista Balbis. He published ' (1 ... in 1816. The females in this species reach maturity within their first year of life. They reach their peak of reproduction during the winter time in the Mediterranean. References Portunoidea Crustacea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Ocean
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continents of Asia and Oceania in the west and the Americas in the east. At in area (as defined with a southern Antarctic border), this largest division of the World Ocean—and, in turn, the hydrosphere—covers about 46% of Earth's water surface and about 32% of its total surface area, larger than Earth's entire land area combined .Pacific Ocean . '' Britannica Concise.'' 2008: Encyclopædia Britannica, Inc. The centers of both the [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carcinus
''Carcinus'' ( '' Karkinos'') is a genus of crabs, which includes ''Carcinus maenas'', an important invasive species, and '' C. aestuarii'', a species endemic to the Mediterranean Sea. ''Carcinus maenas'' ''C. maenas'' is among the 100 "world's worst alien invasive species". It is native to the northeast Atlantic Ocean and Baltic Sea, but has colonised similar habitats in Australia, South Africa, South America, and both Atlantic and Pacific Coasts of North America. It grows to a carapace width of , and feeds on a variety of molluscs, worms, and small crustaceans, potentially impacting a number of fisheries. Its successful dispersion has occurred via a variety of mechanisms, such as on ships' hulls, packing materials, bivalves moved for aquaculture, and rafting. ''C. maenas'' is known by different names around the world. In the British Isles, it is generally referred to simply as the shore crab. In North America and South Africa, it bears the name green crab or European green ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lissocarcinus
''Lissocarcinus'' is a genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ... of crabs containing the following nine species : *'' Lissocarcinus arkati'' Kemp, 1923 *'' Lissocarcinus boholensis'' Semper, 1880 *'' Lissocarcinus echinodisci'' Derijard, 1968 *'' Lissocarcinus elegans'' Boone, 1934 *'' Lissocarcinus holothuricola'' (Streets, 1877) *'' Lissocarcinus laevis'' Miers, 1886 *'' Lissocarcinus orbicularis'' Dana, 1852 *'' Lissocarcinus ornatus'' Chopra, 1931 *'' Lissocarcinus polybioides'' Adams & White, 1849 References Portunoidea {{Crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Pacific Ocean")
