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Onychoteuthidae
The hooked squid, family (biology), family Onychoteuthidae, currently comprise about 20–25 species (several known from only single life stages and thus unconfirmed), in six or seven genus, genera. They range in mature mantle (mollusc), mantle length from to a suggested length of for the largest member, ''Onykia robusta''. The family is characterised by the presence of hooks only on the cephalopod limb, tentacular clubs, a simple, straight, funnel–mantle locking apparatus, and a 'step' inside the jaw angle of the cephalopod beak, lower beak. With the exception of the Arctic Ocean, the family is found worldwide. Species *Genus ''Onychoteuthis'' Hinrich Lichtenstein, Lichtenstein, 1818 **''Onychoteuthis banksii'' (William Elford Leach, Leach, 1817) – common clubhook squid **''Onychoteuthis bergii''* Lichtenstein, 1818 **''Onychoteuthis mollis''* Adolf Appelloef, Appelloef, 1891 **''Onychoteuthis compacta'' S. Stillman Berry, Berry, 1913 **''Onychoteuthis borealijaponica'' Y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moroteuthopsis
''Moroteuthopsis'' is a genus of squid in the family Onychoteuthidae. The type species is ''Moroteuthopsis ingens''. Prior to 2018, ''Moroteuthopsis'' was considered a subgenus of ''Onykia''; after the mitochondrial DNA of the family Onychoteuthidae was studied, ''"O." ingens'' was found to group together with ''Kondakovia'', and the subgenus ''Moroteuthopsis'' was elevated to full genus status. This genus is similar to ''Onykia'', both possessing warty or longitudinally-ridged skin, ammoniacal tissues, large body size, and the lack of photophores, but can be distinguished by ''Mo. spp.'' lacking a Y-shaped ridge in the Siphon (mollusc), funnel and symmetrical grooves on the "claw portion" of the tentacular hooks, both of these present in ''Onykia'', along with the rostrum segment of the gladius being proportionally shorter in ''Mo. spp.''. References External linksTree of Life web project: ''Kondakovia''*Laptikhovsky, V.; Arkhipkin, A.; Bolstad, K.S. 2008A second species of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onykia Robusta
''Onykia robusta'', also known as the robust clubhook squid and often cited by the older name ''Moroteuthis robusta'', is a species of squid in the family Onychoteuthidae. Reaching a mantle length of Norman, M.D. 2000. ''Cephalopods: A World Guide''. ConchBooks. it is the largest member of its family and one of the largest of all cephalopods. The largest specimen with reliable catch data was found in the Bering Sea, a male with a total length of and weighing . The tentacular clubs are slender, containing 15–18 club hooks. Arms of the species contain 50–60 suckers, and grow to 90–100% of the mantle length. It is found primarily in the boreal to Temperate Northern Pacific. Genetic diversity ''O. robusta'' has a low genetic diversity, similar to the giant squid ''Architeuthis dux''. Confusion with ''Architeuthis'' Some time before 1993, a large individual of ''O. robusta'' was photographed by Japanese diver Kubota H. in shallow water off southern Japan.Ellis, R. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cephalopod Beak
All extant taxon, extant cephalopods have a two-part beak, or Rostrum (anatomy), rostrum, situated in the buccal mass and surrounded by the muscular Cephalopod limb, head appendages. The Dorsal (anatomy), dorsal (upper) mandible fits into the ventral (lower) mandible and together they function in a scissor-like fashion.Young, R.E., M. Vecchione & K.M. Mangold (1999)Cephalopoda Glossary Tree of Life Web Project. The beak may also be referred to as the mandibles or jaws.Tanabe, K., Y. Hikida & Y. Iba (2006). Two coleoid jaws from the Upper Cretaceous of Hokkaido, Japan. ''Journal of Paleontology'' 80(1): 138–145. These beaks are different from Beak, bird beaks because they crush bone while most bird beaks do not. Fossilized remains of beaks are known from a number of cephalopod-groups, both extant and extinct, including squids, octopus, octopodes, belemnites, and vampyromorphs. Aptychus, Aptychi - paired plate-like structures found in ammonites - may also have been jaw elements. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onychoteuthis Banksii
''Onychoteuthis banksii'', the common clubhook squid, is a species of squid in the family Onychoteuthidae. It is the type species of the genus '' Onychoteuthis''. This species was thought to have a worldwide distribution but with the revision of the genus '' Onychoteuthis'' in 2010, it is now accepted that ''Onychoteuthis banksii'' is restricted to the central and northern Atlantic and the Gulf of Mexico while a recently described species, '' Onychoteuthis horstkottei'', is found in the Pacific Ocean. The type locality is the Gulf of Guinea. Description The maximum mantle length is . The eight arms are all of equal size and the tentacles are 27% of the mantle length. The clubs on the end of the tentacles bear two rows of strongly recurved hooks. There are two intestinal photophores, the anterior one being larger than the posterior one; there are also photophores in the form of whitish patches on the underside of the eyeballs. Most squid live in deep water, and in these, the len ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Filippovia
''Filippovia knipovitchi'', the smooth hooked squid, is a species of squid in the family Onychoteuthidae and the sole member of the genus ''Filippovia''. It is found in the Antarctic and Atlantic Ocean The Atlantic Ocean is the second largest of the world's five borders of the oceans, oceanic divisions, with an area of about . It covers approximately 17% of Earth#Surface, Earth's surface and about 24% of its water surface area. During the ...s, and reaches a mantle length of 35 cm. References *Bolstad, K.S.R. 2010. Systematics of the Onychoteuthidae Gray, 1847 (Cephalopoda: Oegopsida). ''Zootaxa'' 2696: 1–186Preview External links Tree of Life web project: ''Filippovia knipovitchi '' Hooked squid Cephalopods described in 1972 {{squid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cephalopod Limb
All cephalopods possess flexible limbs extending from their heads and surrounding their beaks. These appendages, which function as muscular hydrostats, have been variously termed arms, legs or tentacles. Description In the scientific literature, a cephalopod ''arm'' is often treated as distinct from a '' tentacle'', though the terms are sometimes used interchangeably, often with the latter acting as an umbrella term for cephalopod limbs. Generally, arms have suckers along most of their length, as opposed to tentacles, which have suckers only near their ends.Young, R.E., M. Vecchione & K.M. Mangold 1999Cephalopoda Glossary Tree of Life web project. Barring a few exceptions, octopuses have eight arms and no tentacles, while squid and cuttlefish have eight arms (or two "legs" and six "arms") and two tentacles.Norman, M. 2000. ''Cephalopods: A World Guide''. ConchBooks, Hackenheim. p. 15. "There is some confusion around the terms ''arms'' versus ''tentacles''. The numerous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onychoteuthis Meridiopacifica
''Onychoteuthis meridiopacifica'' is a species of squid in the family Onychoteuthidae. Males become mature at 40 mm, and the species is believed to reach a maximum mantle (mollusc), mantle length of 90 mm, the smallest species in the genus ''Onychoteuthis''. The tentacular club reaches a length of 20-25% of the mantle length, and contains 16-19 club hooks. Cephalopod arm, Arms reach 27-44% of the mantle length, and each contain 50-60 suckers. 8-12 Nuchal crest (cephalopod), nuchal folds are present on each side of the head. Its short, broad fins and the possession of a small number marginal suckers on the tentacular clubs of adults are distinguishing characteristics of this species. It is found off eastern Australia and probably extends into seas off Indonesia as well as east to Tonga and Vanuatu. References Onychoteuthis Cephalopods described in 1990 {{squid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onychoteuthis Borealijaponica
''Onychoteuthis borealijaponica'', the boreal clubhook squid, is a species of squid in the family Onychoteuthidae. It is the largest member of the genus ''Onychoteuthis'', reaching a mantle length of 30 cm in males and 37 cm in females. Maturity is reached at 250 mm for males, and 300–350 mm in females. There are 24–27 hooks on each club, which is more than any other species in the genus ''Onychoteuthis''. It is a pelagic species native to the North Pacific, although it migrates into Subarctic The subarctic zone is a region in the Northern Hemisphere immediately south of the true Arctic, north of hemiboreal regions and covering much of Alaska, Canada, Iceland, the north of Fennoscandia, Northwestern Russia, Siberia, and the Cair ... waters during the summer from its more southerly winter spawning grounds. References *''Onychoteuthis borealijaponica'', Boreal Clubhook Squid, SeaLifeBase. http://www.sealifebase.org/Summary/SpeciesSummary.php?id=57 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onychoteuthis Compacta
''Onychoteuthis compacta'' is a species of squid in the family Onychoteuthidae, known to occur in Hawaiian waters. as well as in other areas of the Central Pacific and western north-central Atlantic, it probably has a circumglobar distribution. The species is known to have a mantle length of at least 122 mm for females and 127 mm for males. Each tentacle In zoology, a tentacle is a flexible, mobile, and elongated organ present in some species of animals, most of them invertebrates. In animal anatomy, tentacles usually occur in one or more pairs. Anatomically, the tentacles of animals work main ... has 22 club hooks, measuring approximately 30 mm in mature specimens. References External links Tree of Life web project: ''Onychoteuthis compacta'' Onychoteuthis Cephalopods described in 1913 Taxa named by Samuel Stillman Berry Molluscs of Hawaii {{squid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onychoteuthis Mollis
''Onychoteuthis'' is a genus of squid in the family Onychoteuthidae. The type species is ''Onychoteuthis bergii''. While the genus is found worldwide in tropical and subtropical oceans, they can also occur in the North Pacific Ocean. There were previously considered to be four species in the genus but there are now considered to be roughly 10. These squid are frequently observed in the surface waters at night and they are often caught using dipnet at nightlight stations. The young squid are usually the only specimens captured using standard midwater trawls, the older squid are apparently able to avoid the trawls. They can, however be collected from the air as individuals are able to leap high out of the water, sometimes even landing on the deck of a ship. Anatomy Most species belonging to the genus have a mantle length of under 200 mm, however the larger members may measure over 300 mm. The species in this genus have a densely muscular, cylindrical mantle which is tap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onychoteuthis Bergii
''Onychoteuthis bergii'' is a species of hooked squid from the family Onychoteuthidae. The species was originally described by Hinrich Lichtenstein from specimens taken near the Cape of Good Hope and is the type species of the genus ''Onychoteuthis''. Until recently it was considered to be a junior synonym of ''Onychoteuthis banksii'', but a re-examination of the type material, the lectotype and paralectotype which are deposited in the Natural History Museum, Berlin The Natural History Museum () is a natural history museum located in Berlin, Germany. It exhibits a vast range of specimens from various segments of natural history and in such domain it is one of three major museums in Germany alongside Natur ..., showed that there were morphological differences which supported the status of ''O. bergii'' as a valid species. The species is found in the eastern South Atlantic and Indian Oceans. References {{Taxonbar, from=Q13924104 Onychoteuthis Cephalopods described in 18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onykia Sp
''Onykia'' is a genus of squids in the family Onychoteuthidae. Due to similarities between the genera, several recent authors consider the genus ''Moroteuthis'' a junior synonym of ''Onykia''. The type species is '' Onykia carriboea'', the tropical clubhook squid. Species The following are the valid species currently recognised as members of the genus ''Onkyia'' by the World Register of Marine Species: *''Onykia aequatorialis'' ( Thiele, 1920) *'' Onykia carriboea'' Lesueur, 1821 *''Onykia indica'' Okutani, 1981 *''Onykia ingens'' ( E. A. Smith, 1881) *''Onykia loennbergii'' (Ishikawa & Wakiya, 1914) *''Onykia robsoni'' (Adam, 1962) *''Onykia robusta ''Onykia robusta'', also known as the robust clubhook squid and often cited by the older name ''Moroteuthis robusta'', is a species of squid in the family Onychoteuthidae. Reaching a mantle length of Norman, M.D. 2000. ''Cephalopods: A World Gu ...'' (Verrill, 1876) References External links Tree of Life web project: Onykia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
