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Onychoteuthis
''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 Aequimanus
''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 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 l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onychoteuthidae
The hooked squid, family Onychoteuthidae, currently comprise about 20–25 species (several known from only single life stages and thus unconfirmed), in six or seven genera. They range in mature mantle length from 7 cm to a suggested length of 2 m for the largest member, ''Onykia robusta''. The family is characterised by the presence of hooks only on the tentacular clubs, a simple, straight, funnel–mantle locking apparatus, and a 'step' inside the jaw angle of the lower beak. With the exception of the Arctic Ocean, the family is found worldwide. Species *Genus '' Onychoteuthis'' Lichtenstein, 1818 **''Onychoteuthis banksii'' (Leach, 1817) – common clubhook squid **''Onychoteuthis bergii''* Lichtenstein, 1818 **''Onychoteuthis mollis''* Appelloef, 1891 **''Onychoteuthis compacta'' Berry, 1913 **''Onychoteuthis borealijaponica'' Okada, 1927 – boreal clubhook squid **''Onychoteuthis meridiopacifica'' Rancurel & Okutani, 1990 **''Onychoteuthis lacrima'' Bolsta ... [...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 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 continen ..., although it migrates into Subarctic 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?i ... [...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 (german: Museum für Naturkunde) 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 muse ..., 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 Squid Cephalopods described in 1818< ... [...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 ma ... has 22 club hooks, measuring approximately 30 mm in mature specimens. References External links Tree of Life web project: ''Onychoteuthis compacta'' Squid Molluscs described in 1913 Taxa named by Samuel Stillman Berry {{squid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squid
True squid are molluscs with an elongated soft body, large eyes, eight arms, and two tentacles in the superorder Decapodiformes, though many other molluscs within the broader Neocoleoidea are also called squid despite not strictly fitting these criteria. Like all other cephalopods, squid have a distinct head, bilateral symmetry, and a mantle. They are mainly soft-bodied, like octopuses, but have a small internal skeleton in the form of a rod-like gladius (cephalopod), gladius or pen, made of chitin. Squid diverged from other cephalopods during the Jurassic and occupy a similar role to teleost fish as open water predators of similar size and behaviour. They play an important role in the open water food web. The two long tentacles are used to grab prey and the eight arms to hold and control it. The beak then cuts the food into suitable size chunks for swallowing. Squid are rapid swimmers, moving by Aquatic locomotion#Jet propulsion, jet propulsion, and largely locate their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manus (anatomy)
The manus (Latin for ''hand'', plural manus) is the zoological term for the distal portion of the fore limb of an animal. In tetrapods, it is the part of the pentadactyl limb that includes the metacarpals and digits (phalanges). During evolution, it has taken many forms and served a variety of functions. It can be represented by the hand of primates, the lower front limb of hoofed animals or the fore paw and is represented in the wing of birds, bats and prehistoric flying reptiles (pterosaurs), the flipper of marine mammals and the 'paddle' of extinct marine reptiles, such as plesiosaurs and ichthyosaurs. In cephalopods, the ''manus'' is the end, broader part of a tentacle, and its suckers are often larger and arranged differently from those on the other arms. See also *Pes (anatomy) The pes (Latin for ''foot'') is the zoological term for the distal portion of the hind limb of tetrapod animals. It is the part of the pentadactyl limb that includes the metatarsals and digits (p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yaichirō Okada
was a Japanese zoologist. He was born in Ishikawa Prefecture. Okada studied at the Imperial Fisheries Institute (now Tokyo University of Marine Science and Technology). He was a professor at Tokyo Higher Normal School (now University of Tsukuba), and after World War II he taught at Mie University from 1950, where he was dean of Fisheries. After retirement he served as a professor at Tokai University is a private non-sectarian higher education institution located in Tokyo, Japan. It was founded by Dr. Shigeyoshi Matsumae. It was accredited under Japan's old educational system in 1946 and under the new system in 1950. In 2008, Tokai Un .... As a zoologist, has contributed in the field of fish taxonomy, as well as reptiles and amphibians. Okada's primary work in English was ''Fishes of Japan'', which published in 1955 by Maruzen and subsequently issued in revised editions. References 20th-century Japanese zoologists Japanese mammalogists 1892 births 1976 death ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William ELford Leach
William Elford Leach Royal Society, FRS (2 February 1791 – 25 August 1836) was an English zoologist and marine biologist. Life and work Elford Leach was born at Hoe Gate, Plymouth, the son of an attorney. At the age of twelve he began a medical apprenticeship at the Royal Devon and Exeter Hospital, Devonshire and Exeter Hospital, studying anatomy and chemistry. By this time he was already collecting marine animals from Plymouth Sound and along the Devon coast. At seventeen he began studying medicine at St Bartholomew's Hospital in London, finishing his training at the University of Edinburgh before graduating Doctor of Medicine, MD from the University of St Andrews (where he had never studied). From 1813 Leach concentrated on his zoological interests and was employed as an 'Assistant Librarian' (what would later be called Assistant Keeper) in the Natural History Museum, London, Natural History Department of the British Museum, where he had responsibility for the zoological ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William More Gabb
William More Gabb (January 16, 1839 – May 30, 1878) was an American paleontologist. Gabb was born and educated in Philadelphia, Pennsylvania, the leading center of American science at the time. He graduated from Jefferson Grammar School at age thirteen and was admitted to the prestigious Central High School of Philadelphia. He distinguished himself in his studies and showed an interest in natural history, conchology and geology. He graduated in 1857 with a bachelor of arts degree. Gabb chose to pursue a career in geology and sought the assistance of the notable geologist, James Hall in Albany, New York. For a time he became Hall's student and assistant before returning to Philadelphia in 1860. There he became an active member of the Academy of Natural Sciences and then briefly joined a group of young scientists studying at the Smithsonian Institution in Washington D.C . In 1861, Josiah Whitney, chief of the California Geological Survey, was searching for a qualified ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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