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Etmopterus
''Etmopterus'' is a genus of lantern sharks in the squaliform family Etmopteridae. They are found in deep sea ecosystems of the Atlantic, Indian and Pacific Oceans. Ecology A number of species in this genus function as host to the specialized parasitic barnacle '' Anelasma squalicola'', which embeds itself into the skin of the shark and extracts nutrients from its bloodstream. Species There are currently 45 recognized species in this genus: * '' Etmopterus alphus'' Ebert, Straube, Leslie & Weigmann, 2016 (whitecheek lanternshark) * ''Etmopterus baxteri'' Garrick, 1957 (New Zealand lanternshark) * ''Etmopterus benchleyi'' Vásquez, Ebert & D. J. Long, 2015 (ninja lanternshark) * ''Etmopterus bigelowi'' Shirai & Tachikawa, 1993 (blurred lanternshark) * ''Etmopterus brachyurus'' H. M. Smith & Radcliffe, 1912 (short-tail lanternshark) * '' Etmopterus brosei'' Ebert, Leslie & Weigmann, 2021 * '' Etmopterus bullisi'' Bigelow & Schroeder, 1957 * '' Etmopterus burgessi'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Velvet Belly Lanternshark
The velvet belly lanternshark (or simply velvet belly) (''Etmopterus spinax'') is a species of dogfish shark in the family Etmopteridae. One of the most common deepwater sharks in the northeastern Atlantic Ocean, the velvet belly is found from Iceland and Norway to Gabon and South Africa at a depth of . A small shark generally no more than long, the velvet belly is so named because its black underside is abruptly distinct from the brown coloration on the rest of its body. The body of this species is fairly stout, with a moderately long snout and tail, and very small gill slits. Like other lanternsharks, the velvet belly is bioluminescent, with light-emitting photophores forming a species-specific pattern over its flanks and abdomen. The ventral photophores are thought to function in counter-illumination, which camouflages the shark against predators and prey. The bioluminescent flank markings may play a role in intraspecific communication. Young velvet bellies feed mainly on kr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Etmopterus Bigelowi
The blurred lanternshark (''Etmopterus bigelowi'') is a little-known species of dogfish shark in the family Etmopteridae, found around the world in benthic and pelagic habitats from a depth of to over down. This shark forms the '' E. pusillus'' species group with the smooth lanternshark, which are distinguished from other members of its family by having irregularly arranged, flat-topped dermal denticles that give them a "smooth" appearance. Both species are slender-bodied with long heads, two dorsal fins bearing spines, no anal fins, and light-emitting photophores. The blurred lanternshark is larger, reaching or more in length. This species feeds on small squid, fishes, and fish eggs, and is ovoviviparous. It has been assessed as of Least Concern by the International Union for Conservation of Nature, because of its wide distribution and lack of threat from fishing pressure. Taxonomy and phylogeny Japanese ichthyologists Shigeru Shirai and Hiroyuki Tachikawa described the blurr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Etmopterus Benchleyi
The ninja lanternshark (''Etmopterus benchleyi'') is a lanternshark of the family Etmopteridae found in the eastern Pacific Ocean from Nicaragua, south to Panama and Costa Rica. The depth range of collections is from 836 to 1443 m along the continental slope. ''E. benchleyi'' is the only ''Etmopterus'' species presently known from the Pacific Coast of Central America. Type The species was described from eight specimens collected off the Pacific Coast of Central America during an expedition of the Spanish research ship ''Miguel Oliver'' by D. Ross Robertson, a researcher at the Smithsonian Tropical Research Institute. One holotype and four paratypes were described and deposited with the United States National Museum of Natural History, Smithsonian Institution, Washington D.C. Description The ninja lanternshark is coloured black with the mouth and eyes having white markings around them. The maximum length of male specimens collected during the ''Miguel Oliver'' voyages is w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Etmopterus Brachyurus
The short-tail lanternshark (''Etmopterus brachyurus'') is a shark of the family Etmopteridae found in the western Pacific between latitudes 37°N and 30°S, at depths of between . Its length is up to . Reproduction is ovoviviparous Ovoviviparity, ovovivipary, ovivipary, or aplacental viviparity is a term used as a "bridging" form of reproduction between egg-laying oviparous and live-bearing viviparous reproduction. Ovoviviparous animals possess embryos that develop insi .... References * * Compagno, Dando, & Fowler, ''Sharks of the World'', Princeton University Press, New Jersey 2005 {{DEFAULTSORT:Short-tail lanternshark Etmopterus Taxa named by Hugh McCormick Smith Taxa named by Lewis Radcliffe Fish described in 1912 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Lanternshark
The green lanternshark (''Etmopterus virens'') is a species of dogfish shark in the family Etmopteridae, found in the western central Atlantic Ocean. This species usually occurs on the upper continental slope below a depth of . Reaching in length, the green lanternshark has a slender body with a long, thin tail and low, conical dermal denticles on its flanks. It is dark brown or gray with ventral black coloration, which contain light-emitting photophores that may serve a cryptic and/or social function. Green lanternsharks are thought to be gregarious and may attack their prey, squid and octopus often larger than themselves, in packs. Reproduction is aplacental viviparous, with females giving birth to litters of one to three young. This relatively common shark is an occasional, valueless bycatch of commercial fisheries; currently it does not appear to be significantly threatened by human activities. Taxonomy The green lanternshark was scientifically described in 1953 by Henry B. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Etmopterus Baxteri
The New Zealand lanternshark (''Etmopterus baxteri'') is a shark of the family Etmopteridae found off New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count .... Some taxonomic authorities consider it to be conspecific with the southern lanternshark. References Etmopterus Fish described in 1957 Taxa named by Jack Garrick {{Shark-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anelasma Squalicola
''Anelasma'' is a monotypic genus of goose barnacles that live as parasites on various shark hosts. Taxonomy The genus ''Anelasma'' contains a single species, ''Anelasma squalicola''. The nominal species, however, has a very broad distribution and may in fact be a species complex that contain several undescribed species. It has been suggested that ''Anelasma'' diverged from the ancestor it shares with its current closest relatives (the free-living, suspension-feeding species in the genera ''Capitulum'' and '' Pollicipes'') a long time ago. The species may represent the only remaining representative of a previously more numerous clade that made the evolutionary transition from filter-feeding to parasitism. Description left, Velvet belly lanternshark with ''Anelasma'' This barnacle reaches a length of approximately 25 mm. Unlike most barnacles, it has no shell; the outermost integument is its tough, purplish-black mantle, without any calcareous plates. The body protrudes f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Etmopterus Alphus
The whitecheek lanternshark (''Etmopterus alphus'') is a shark of the family Etmopteridae found in the western Indian Ocean The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or ~19.8% of the water on Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia to the east. To the south it is bounded by th .... References Etmopterus Fish described in 2016 {{Shark-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Etmopteridae
The Etmopteridae are a family of sharks in the order Squaliformes, commonly known as lantern sharks. Their name comes from the presence of light-producing photophore A photophore is a glandular organ that appears as luminous spots on various marine animals, including fish and cephalopods. The organ can be simple, or as complex as the human eye; equipped with lenses, shutters, color filters and reflectors, ...s on their bodies. The members of this family are small, under long, and are found in deep waters worldwide. The 45 species are placed in five genera. Three-quarters of the species are in the genus ''Etmopterus''. Genera * '' Aculeola'' * '' Centroscyllium'' * '' Etmopterus'' * †'' Paraetmopterus'' * '' Trigonognathus'' References {{Taxonbar, from=Q720466 Shark families Taxa named by Henry Weed Fowler ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squaliformes
The Squaliformes are an order (biology), order of sharks that includes about 126 species in seven families. Members of the order have two dorsal fins, which usually possess spines, they usually have a sharp head, no anal fin or nictitating membrane, and five to seven gill slits. In most other respects, however, they are quite variable in form and size. Most species of the squaliform order live in saltwater or brackish water. They are found worldwide, from northern to tropical waters, and from shallow coastal seas to the open ocean. All members of the family Eptomeridae and Dalatiidae and ''Zameus squamulosus'' possess photophores, luminous organs, and exhibit intrinsic bioluminescence. Bioluminescence evolved once in Squaliformes, approximately 111–153 million years ago, and helped the Squaliformes radiate and adapt to the deep sea. The common ancestor of Dalatiidae, Etmopteridae, Somniosidae, and Oxynotidae possessed a luminous organ and used bioluminescence for camouf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shigeru Shirai
is a Japanese ichthyologist specializing in elasmobranchs, especially sharks. He graduated from Hokkaido University's Laboratory of Marine Zoology with a PhD in Fisheries Science. He is an editor of Japan's ''Ichthyological Research ''Ichthyological Research'' is a quarterly peer-reviewed scientific journal covering various aspects of ichthyology research. It is published by Springer Science+Business Media and was established in 1988. The editor-in-chief is Tomoyuki Kokita ...'' journal and author of the book, ''Squalean Phylogeny''. He died at the age of 63 on September 9, 2020. Taxon described by him *See :Taxa named by Shigeru Shirai References 4. 白井 滋さんを偲んでJapanese Society for Elasmobranch Studies Vol.53. March 2021. Japanese ichthyologists Japanese scientists Living people Year of birth missing (living people) {{japan-scientist-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robin W
Robin may refer to: Animals * Australasian robins, red-breasted songbirds of the family Petroicidae * Many members of the subfamily Saxicolinae (Old World chats), including: **European robin (''Erithacus rubecula'') **Bush-robin **Forest robin **Magpie-robin ** Scrub-robin **Robin-chat, two bird genera ** Bagobo robin **White-starred robin **White-throated robin ** Blue-fronted robin **Larvivora (6 species) **Myiomela (3 species) * Some red-breasted New-World true thrushes (''Turdus'') of the family Turdidae, including: ** American robin (''T. migratorius'') (so named by 1703) ** Rufous-backed thrush (''T. rufopalliatus'') ** Rufous-collared thrush (''T. rufitorques'') ** Formerly other American thrushes, such as the clay-colored thrush (''T. grayi'') * Pekin robin or Japanese (hill) robin, archaic names for the red-billed leiothrix (''Leiothrix lutea''), red-breasted songbirds * Sea robin, a fish with small "legs" (actually spines) Arts, entertainment, and media Fictional c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
