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Lithodidae
King crabs are a taxon of decapod crustaceans chiefly found in cold seas. Because of their large size and the taste of their meat, many species are widely caught and sold as food, the most common being the red king crab (''Paralithodes camtschaticus''). King crabs are generally thought to be derived from hermit crab-like ancestors within the Paguridae, which may explain the asymmetry still found in the adult forms. This ancestry is supported by several anatomical peculiarities which are present only in king crabs and hermit crabs. Although some doubt still exists about this hypothesis, king crabs are the most widely quoted example of carcinisation among the Decapoda. The evidence for this explanation comes from the asymmetry of the king crab's abdomen, which is thought to reflect the asymmetry of hermit crabs, which must fit into a spiral shell. Controversial taxon Although formerly classified among the hermit crabs in the superfamily Paguroidea, king crabs are now placed i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lithodoidea
King crabs are a taxon of decapod crustaceans chiefly found in cold seas. Because of their large size and the taste of their meat, many species are widely caught and sold as food, the most common being the red king crab (''Paralithodes camtschaticus''). King crabs are generally thought to be derived from hermit crab-like ancestors within the Paguridae, which may explain the asymmetry still found in the adult forms. This ancestry is supported by several anatomical peculiarities which are present only in king crabs and hermit crabs. Although some doubt still exists about this hypothesis, king crabs are the most widely quoted example of carcinisation among the Decapoda. The evidence for this explanation comes from the asymmetry of the king crab's abdomen, which is thought to reflect the asymmetry of hermit crabs, which must fit into a spiral shell. Controversial taxon Although formerly classified among the hermit crabs in the superfamily Paguroidea, king crabs are now placed in a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhinolithodes
''Rhinolithodes wosnessenskii'', also called the ''rhinoceros crab'' or ''golf-ball crab'', is a species of king crab, the only species in the genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ... ''Rhinolithodes''. The species is named after Ilya Gavrilovich Voznesenski. It is found at depths of in the north-east Pacific Ocean from Kodiak, Alaska to Crescent City, California. ''R. wosnessenskii'' grows to across the carapace, which is triangular and has a deep semicircle, semicircular depression. The arthropod leg, legs are covered in spines and long setae. It lives in crevices on rocky or gravel bottoms, and is only rarely encountered. References King crabs Crustaceans of the eastern Pacific Ocean Monotypic arthropod genera {{decapod-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paralithodes Californiensis
The Paralithodes californiensis, also known as the spiny king crab and the California king crab, is a species of king crab found in the East Pacific 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 contine .... References External links * Fauna of California King crabs Crustaceans of the eastern Pacific Ocean Edible crustaceans Commercial crustaceans Crustaceans described in 1895 {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hermit Crab
Hermit crabs are anomuran decapod crustaceans of the superfamily Paguroidea that have adapted to occupy empty scavenged mollusc shells to protect their fragile exoskeletons. There are over 800 species of hermit crab, most of which possess an asymmetric abdomen concealed by a snug-fitting shell. Hermit crabs' soft (non-calcified) abdominal exoskeleton means they must occupy shelter produced by other organisms or risk being defenseless. The strong association between hermit crabs and their shelters has significantly influenced their biology. Almost 800 species carry mobile shelters (most often calcified snail shells); this protective mobility contributes to the diversity and multitude of crustaceans found in almost all marine environments. In most species, development involves metamorphosis from symmetric, free-swimming larvae to morphologically asymmetric, benthic-dwelling, shell-seeking crabs. Such physiological and behavioral extremes facilitate a transition to a sheltered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glyptolithodes
''Glyptolithodes cristatipes'', also known as the Peruvian centolla, is a species of king crab, and the only species in the genus ''Glyptolithodes''. The species was briefly placed in the related genus ''Rhinolithodes'' after its initial alpha taxonomy, description, but was soon moved to its own genus. Distribution ''G. cristatipes'' is found off the Pacific Ocean, Pacific coasts of South America, especially Chile and Peru, and extending as far northwards as Southern California, and as far south as 33° 35' S. The most closely related genera to ''Glyptolithodes'' all live in the Northern Hemisphere, suggesting that ''Glyptolithodes'' has migrated from its ancestral home to the Southern Hemisphere, where it is now most abundant. Dimorphism This species shows notable sexual dimorphism, with the males having a right cheliped which is larger than the left. References {{Taxonbar, from=Q15730761 King crabs Edible crustaceans Crustaceans of the eastern Pacific Ocean Western Sout ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paguroidea
Hermit crabs are anomuran Decapoda, decapod crustaceans of the superfamily (taxonomy), superfamily Paguroidea that have adapted to occupy empty scavenged mollusc shells to protect their fragile exoskeletons. There are over 800 species of hermit crab, most of which possess an asymmetric abdomen concealed by a snug-fitting shell. Hermit crabs' soft (non-Marine biogenic calcification, calcified) abdominal exoskeleton means they must occupy shelter produced by other organisms or risk being defenseless. The strong association between hermit crabs and their shelters has significantly influenced their biology. Almost 800 species carry mobile shelters (most often calcified Gastropod shell, snail shells); this protective mobility contributes to the diversity and multitude of crustaceans found in almost all marine environments. In most species, development involves metamorphosis from symmetric, free-swimming larvae to morphologically asymmetric, benthic zone, benthic-dwelling, shell-seeking ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neolithodes
''Neolithodes'' is a genus of king crabs, in the family Lithodidae. They are found in all major oceans, both in high and low latitudes. Although there are records from water as shallow as in cold regions, most records are much deeper, typically , with the deepest confirmed at . They are fairly large to large crabs that typically are reddish in color and spiny, although the size of these spines varies depending on species (from long in species like '' N. grimaldii'' to very short in species like ''N. flindersi'', and tending to be more pronounced in small than in large individuals). Various sessile organisms such as barnacles are sometimes attached to their carapace and legs, and small commensal amphipods may live in their carapace. They are occasionally the victims of parasitic snailfish of the genus '' Careproctus'', which lay their egg mass in the gill chamber of the crab, forming a mobile "home" until they hatch. Conversely, some juvenile ''Neolithodes'' have a commensal r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carcinisation
Carcinisation (or carcinization) is an example of convergent evolution in which a crustacean evolves into a crab-like form from a non-crab-like form. The term was introduced into evolutionary biology by L. A. Borradaile, who described it as "one of the many attempts of Nature to evolve a crab". Most carcinised crustaceans belong to the infraorder Anomura. Definition of carcinised morphology It was stated by Lancelot Alexander Borradaile in 1916 that: Keiler et al., 2017 defines a carcinised morphology as follows: * "The carapace is flatter than it is broad and possesses lateral margins" * "The sternites are fused into a wide sternal plastron which possesses a distinct emargination on its posterior margin." * "The pleon is flattened and strongly bent, in dorsal view completely hiding the tergites of the fourth pleonal segment, and partially or completely covers the plastron" Examples Carcinisation is believed to have occurred independently in at least five grou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paralomis
''Paralomis'' is a genus of king crabs. It includes the following species: *''Paralomis aculeata'' Henderson, 1888 *''Paralomis africana'' Macpherson, 1982 *'' Paralomis alcockiana'' Hall & Thatje, 2009 *'' Paralomis anamerae'' Macpherson, 1988 *''Paralomis arae'' Macpherson, 2001 *'' Paralomis arethusa'' Macpherson, 1994 *''Paralomis aspera'' Faxon, 1893 *''Paralomis birsteini'' Macpherson, 1988 *'' Paralomis bouvieri'' Hansen, 1908 *''Paralomis ceres'' Macpherson, 1989 *''Paralomis chilensis'' Andrade, 1980 *''Paralomis cristata'' Takeda & Ohta, 1979 *''Paralomis cristulata'' Macpherson, 1988 *''Paralomis cubensis'' Chace, 1939 *''Paralomis danida'' Takeda & Bussarawit, 2007 *''Paralomis dawsoni'' Macpherson, 2001 *''Paralomis debodeorum'' Feldmann, 1998 †*''Paralomis diomedeae'' (Faxon, 1893) *''Paralomis dofleini'' Balss, 1911 *''Paralomis echidna'' Ahyong, 2010 *'' Paralomis elongata'' Spiridonov, Turkay, Arntz & Thatje, 2006 *''Paralomis erinacea'' Macpherson, 1988 *'' Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lithodes
''Lithodes'' is a genus of king crabs. Today there are about 30 recognized species, but others formerly included in this genus have been moved to '' Neolithodes'' and '' Paralomis''. They are found in oceans around the world, ranging from shallow to deep waters, but mostly at depths of . They are restricted to relatively cold waters, meaning that they only occur at large depths at low latitudes, but some species also shallower at high latitudes. They are medium to large crabs and some species are or were targeted by fisheries.Emmerson, W.D. (2016). A Guide to, and Checklist for, the Decapoda of Namibia, South Africa, vol. 2. Cambridge Scholar Publishing. Species ''Lithodes'' contains the following species: *''Lithodes aequispinus'' Benedict, 1895 – golden king crab *'' Lithodes aotearoa'' Ahyong, 2010 *'' Lithodes australiensis'' Ahyong, 2010 *'' Lithodes ceramensis'' Takeda & Nagai, 2004 *''Lithodes chaddertoni'' Ahyong, 2010 *'' Lithodes confundens'' Macpherson, 1988 *''Lith ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptolithodes
''Cryptolithodes'' is a genus of king crab King crabs are a taxon of decapod crustaceans chiefly found in cold seas. Because of their large size and the taste of their meat, many species are widely caught and sold as food, the most common being the red king crab (''Paralithodes camtsch ...s, containing the following species: *'' Cryptolithodes expansus'' Miers, 1879 *'' Cryptolithodes sitchensis'' Brandt, 1853 *'' Cryptolithodes typicus'' Brandt, 1848 Etymology The name "''Cryptolithodes''" means "hidden stone". References King crabs {{Decapod-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superfamily (taxonomy)
Superfamily may refer to: *Protein superfamily ** Superfamily database * Superfamily (taxonomy), a taxonomic rank * Superfamily (linguistics), also known as macrofamily * Font superfamily, a large typographic family * Superfamily (band) Superfamily was a Norwegian pop rock band from Moss, Norway. The band is composed of Steven Ray Wilson (lead vocals), Kim Granholt (keytar, synthesizer), Martin Steffensen (guitar), and Richard Lorentz (drums). Anders Nielsen, Terje Krumins and HÃ ..., a Norwegian pop band * "Super Family", a group of comic characters {{Disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
