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Sleeper Sharks
The Somniosidae are a family of sharks in the order Squaliformes, commonly known as sleeper sharks. The common name "''sleeper shark''" comes from their slow swimming, low activity level, and perceived non-aggressive nature. Distribution and habitat The Somniosidae can be found in: *Arctic to subantarctic waters *Shelves in cold waters *Continental and slopes *Temperate and tropical waters Diet Beaks recovered from the stomachs of sleeper sharks suggest they feed on colossal squid.Cherel, Y. & G. Duhamel 2004. ''Deep-Sea Research Part I'' 51: 17–31. Genera and species * ''Centroscymnus'' Barbosa du Bocage & Brito Capello, 1864 ** ''Centroscymnus coelolepis'' Barbosa du Bocage & Brito Capello, 1864 (Portuguese dogfish) ** ''Centroscymnus owstonii'' Garman, 1906 (roughskin dogfish) * '' Centroselachus'' Garman, 1913 ** '' Centroselachus crepidater'' Barbosa du Bocage & Brito Capello, 1864 (longnose velvet dogfish) * ''Scymnodalatias'' Garrick, 1956 ** ''Scymnodalatias ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Somniosus Microcephalus
The Greenland shark (''Somniosus microcephalus''), also known as the gurry shark or grey shark, is a large shark of the family Somniosidae ("sleeper sharks"), closely related to the Pacific sleeper shark, Pacific and southern sleeper sharks. Inhabiting the North Atlantic and Arctic Oceans, they are notable for their exceptional longevity, although they are poorly studied due to the depth and remoteness of their natural habitat. Greenland sharks have the longest lifespan of any known vertebrate, estimated to be between 250 and 500 years. They are among the largest extant shark species, reaching a maximum confirmed length of long and weighing over . They reach sexual maturity at about 150 years of age, and their pups are born alive after an estimated gestation period of 8 to 18 years. The shark is a Generalist and specialist species, generalist feeder, consuming a variety of available foods, including carrion. Greenland shark meat is Toxicity, toxic to mammals due to its high lev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scymnodalatias Albicauda
The whitetail dogfish (''Scymnodalatias albicauda'') is a very rare sleeper shark of the family Somniosidae, found from the eastern Indian Ocean round southern Australia to New Zealand, at depths of between 150 and 500 m. Its length is up to 1.1 m. The whitetail dogfish is a rare species known only from a few specimens taken by tuna longliners and trawlers. The dorsal fins are small, the pectoral fins are angular, and there is an asymmetric caudal fin with a dark-tipped upper lobe. Coloration is grey and white, mottled with large brown or black spots, the tail mostly white with black tips. The whitetail dogfish is ovoviviparous, with at least 59 pups per litter. Conservation status In June 2018 the New Zealand Department of Conservation classified the whitetail dogfish as "Data Deficient" with the qualifier "Uncertain whether Secure Overseas" under the New Zealand Threat Classification System The New Zealand Threat Classification System is used by the Department of Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edgar Ravenswood Waite
Edgar Ravenswood Waite (5 May 1866 – 19 January 1928) was a British/Australian zoologist, ichthyologist, herpetologist, and ornithologist. Waite was born in Leeds, Yorkshire, England England is a Countries of the United Kingdom, country that is part of the United Kingdom. It is located on the island of Great Britain, of which it covers about 62%, and List of islands of England, more than 100 smaller adjacent islands. It ..., the second son of John Waite, a bank clerk, and his wife Jane, ''née'' Vause. Waite was educated at Leeds Parish Church Middle Class School and at the Victoria University of Manchester. In 1888 he was appointed sub-curator of the Leeds Museum and three years later was made curator. On 7 April 1892 Waite married Rose Edith Green at St. Matthew's parish church, Leeds. In 1893 Waite became zoologist at the Australian Museum, Sydney, he was the Fish Curator there from 1893 to 1906. Waite accompanied Charles Hedley of the Australian Museum on the 189 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scymnodon Plunketi
The plunket shark or Plunket's shark (''Scymnodon plunketi'') is a sleeper shark of the family Somniosidae, found around south eastern Australia, and New Zealand, at depths of between 220 and 1,550 m over continental shelves A continental shelf is a portion of a continent that is submerged under an area of relatively shallow water, known as a shelf sea. Much of these shelves were exposed by drops in sea level during glacial periods. The shelf surrounding an island .... It reaches a length of 130 cm.White, W.T., Vaz, D.F.B., Ho, H.-C., Ebert, D.A., Carvalho, M.R.d., Corrigan, S., Rochel, E., Carvalho, M.d., Tanaka, S. & Naylor, G.J.P. (2014): Redescription of ''Scymnodon ichiharai'' Yano and Tanaka 1984 (Squaliformes: Somniosidae) from the western North Pacific, with comments on the definition of somniosid genera. ''Ichthyological Research, 62 (2): 213-229.'' References * Scymnodon Taxa named by Edgar Ravenswood Waite Fish described in 1910 {{Shark- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Tate Regan
Charles Tate Regan (1 February 1878 – 12 January 1943) was a British ichthyology, ichthyologist, working mainly around the beginning of the 20th century. He did extensive work on fish classification schemes. Born in Sherborne, Dorset, he was educated at Derby School and Queens' College, Cambridge and in 1901 joined the staff of the Natural History Museum, London, Natural History Museum, where he became Keeper of Zoology, and later director of the entire museum, in which role he served from 1927 to 1938. Regan was elected Fellow of the Royal Society in 1917. Regan mentored a number of scientists, among them Ethelwynn Trewavas, who continued his work at the British Natural History Museum. Taxon described by him *See :Taxa named by Charles Tate Regan Among the species he described is the Siamese fighting fish (''Betta splendens''). In turn, a number of fish species have been named ''regani'' in his honour: Taxon named in his honor *A Thorny Catfish ''Anadoras regani'' (Stein ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scymnodon Macracanthus
The largespine velvet dogfish (''Scymnodon macracanthus'') is a shark of the family Somniosidae, found on the lower continental slopes between latitudes 50°S and 54°S in the southeast Pacific Ocean from the Straits of Magellan, and the southwest Pacific from New Zealand, at depths of between . Its length is up to . It was originally in the genus '' Centroscymnus'' because of the shape of its dermal denticles and dorsal fin spines but some argued to put it in the genus ''Scymnodon'' because of its shape of dermal denticles. While some wanted to allocate these in ''Centroscymnus'' because of the shape of its lower teeth but later it was allocated to a distinct genus called ''Proscymnodon''. Conservation status The New Zealand Department of Conservation has classified the largespine velvet dogfish as "Not Threatened" with the qualifier "Uncertain whether Threatened Overseas" under the New Zealand Threat Classification System The New Zealand Threat Classification System ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shigeho "Sho" Tanaka
was a Japanese ichthyologist and professor of zoology at the Imperial University of Tokyo. He published numerous works on fishes and sharks and co-authored a book on Japanese fish with famous American scientist David Starr Jordan David Starr Jordan (January 19, 1851 – September 19, 1931) was the founding president of Stanford University, serving from 1891 to 1913. He was an ichthyologist during his research career. Prior to serving as president of Stanford Universi .... Publications Jordan, D. S., S. Tanaka, and J. O. Snyder. 1913. A catalogue of the fishes of Japan. J. Coll. Sci. Imp. Univ. Tokyo, Vol. 33 (article 1): 1–497. Tribute The genus Tanakia D. S. Jordan & W. F. Thompson 1914 was named for Tanaka, as an “accomplished” ichthyologist of the Imperial University of Tokyo, who described '' Tanakia shimazui'' in 1908 and '' Pseudorhodeus tanago'' in 1909. Taxon described by him *See :Taxa named by Shigeho Tanaka References *''Kochi University Biography' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kazunari Yano
Kazunari is a masculine Japanese given name. Written forms Kazunari can be written using different kanji characters and can mean: *和成, "peace/harmony, become" *一成, "one, become" *一就, "one, settle People with the name *, Japanese baseball player *, Japanese footballer *, Japanese footballer *, Japanese baseball player *, Japanese footballer *, Japanese voice actor *, Japanese professional wrestler and mixed martial artist *, Japanese idol, singer, songwriter, actor, voice actor and radio host *, Japanese footballer *, Japanese footballer *, Japanese samurai *, Japanese baseball player *, Japanese cross-country skier *, Japanese voice actor *, Japanese baseball player *, Japanese cyclist {{given name Japanese masculine given names Masculine given names ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scymnodon Ichiharai
The Japanese velvet dogfish (''Scymnodon ichiharai'') is a harmless deepwater sleeper shark of the family Somniosidae, found in the northwest Pacific from Suruga Bay and adjacent waters of Japan at depths of between .White, W.T., Vaz, D.F.B., Ho, H.-C., Ebert, D.A., Carvalho, M.R.d., Corrigan, S., Rochel, E., Carvalho, M.d., Tanaka, S. & Naylor, G.J.P. (2014): Redescription of ''Scymnodon ichiharai'' Yano and Tanaka 1984 (Squaliformes: Somniosidae) from the western North Pacific, with comments on the definition of somniosid genera. ''Ichthyological Research, 62 (2): 213-229.'' Reproduction is ovoviviparous Ovoviviparity, ovovivipary, ovivipary, or aplacental viviparity is a "bridging" form of reproduction between egg-laying oviparity, oviparous and live-bearing viviparity, viviparous reproduction. Ovoviviparous animals possess embryos that develo .... References Scymnodon Taxa named by Kazunari Yano Taxa named by Shigeho "Sho" Tanaka II, 1984 Fish described in 1984< ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scymnodon
''Scymnodon'' is a genus of squaliform sharks in the family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ... Somniosidae. Species There are currently four recognized species in this genus: * '' Scymnodon ichiharai'' Ka. Yano & S. Tanaka (II), 1984 (Japanese velvet dogfish) White, W.T., Vaz, D.F.B., Ho, H.-C., Ebert, D.A., Carvalho, M.R.d., Corrigan, S., Rochel, E., Carvalho, M.d., Tanaka, S. & Naylor, G.J.P. (2014): Redescription of ''Scymnodon ichiharai'' Yano and Tanaka 1984 (Squaliformes: Somniosidae) from the western North Pacific, with comments on the definition of somniosid genera. ''Ichthyological Research, 62 (2): 213-229.'' * '' Scymnodon macracanthus'' ( Regan, 1906) (largespine velvet dogfish) * '' Scymnodon plunketi'' ( Waite, 1910) (Plunket's shark) * '' Scymno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gilbert Edward Archey
Sir Gilbert Edward Archey (4 August 1890 – 20 October 1974) was a New Zealand zoologist, ethnologist, World War I officer, and museum director. He wrote one of the major works on the moa, based on his own field work and collection. He also published numerous articles and described many new animal species. Early life and education Archey was born to Thomas Archey and Sarah Triffitt in York, England in 1890, and emigrated to New Zealand with his parents, at age two. He graduated from Canterbury University College, Christchurch, with the degree of M.A. with honours in zoology in 1913. Career After a period teaching at Nelson College, Archey was Assistant Curator of the Canterbury Museum from 1914 to 1923, where he studied and published papers on numerous New Zealand fauna. He particularly worked on New Zealand moa, Dinornithiformes, extinct macrofauna birds. In 1924 he participated in the 1924 Chatham Islands Expedition. He was then appointed Director of the Auckland Ins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scymnodalatias Sherwoodi
The sherwood dogfish or Sherwood's dogfish (''Scymnodalatias sherwoodi'') is a very rare sleeper shark of the family Somniosidae, found only around New Zealand. The only specimen studied was about 80 cm long. The sherwood dogfish is ovoviviparous. Conservation status In June 2018 the New Zealand Department of Conservation classified the sherwood dogfish as "Not Threatened" with the qualifier "Secure Overseas" under the New Zealand Threat Classification System The New Zealand Threat Classification System is used by the Department of Conservation to assess conservation priorities of species in New Zealand. The system was developed because the IUCN Red List, a similar conservation status system, had s .... References {{DEFAULTSORT:Sherwood dogfish Scymnodalatias Endemic marine fish of New Zealand Fish described in 1921 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
