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Bythaelurus Canescens
The dusky catshark (''Bythaelurus canescens'') is a catshark of the family Scyliorhinidae that is endemic to the southeast Pacific Ocean, off the coasts of Peru and Chile. It grows to a maximum length of 70 cm, and is oviparous like many other chondrichthyans in the Indo-Pacific. Ecology ''Bythaelurus canescens'' is deep-sea shark, generally located between depths of 250–1260 meters. It lives primarily on mud on the upper continental slopes, but can also be found on rocky bottoms. It is an important mesopredator, and is often caught it shrimp trawl nets in northern and central Chilean coasts. Sometimes ''B. canescens'' makes up to 20.3% of the total catch. In spite of this, little is known about it because it is often thrown back without further consideration. Trophic ecology studies are often done on ''B. canescens t''o obtain a general overview of their diet. Diet Studies Much of what is known about the ecology and predicted behavior of the dusky catshark is k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Albert C
Albert may refer to: Companies * Albert (supermarket), a supermarket chain in the Czech Republic * Albert Heijn, a supermarket chain in the Netherlands * Albert Market, a street market in The Gambia * Albert Productions, a record label * Albert Computers, Inc., a computer manufacturer in the 1980s Entertainment * ''Albert'' (1985 film), a Czechoslovak film directed by František Vláčil * ''Albert'' (2015 film), a film by Karsten Kiilerich * ''Albert'' (2016 film), an American TV movie * ''Albert'' (Ed Hall album), 1988 * "Albert" (short story), by Leo Tolstoy * Albert (comics), a character in Marvel Comics * Albert (''Discworld''), a character in Terry Pratchett's ''Discworld'' series * Albert, a character in Dario Argento's 1977 film ''Suspiria'' Military * Battle of Albert (1914), a WWI battle at Albert, Somme, France * Battle of Albert (1916), a WWI battle at Albert, Somme, France * Battle of Albert (1918), a WWI battle at Albert, Somme, France People * Albert (given ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muggiaea Atlantica
''Muggiaea atlantica'' is a species of small hydrozoan, a siphonophore in the family Diphyidae. It is a cosmopolitan species occurring in inshore waters of many of the world's oceans, and it has colonised new areas such as the North Sea and the Adriatic Sea. It is subject to large population swings, and has been held responsible for the death of farmed salmon in Norway. The species was first described by J.T. Cunningham in 1892 from a specimen obtained at Plymouth, England. Description ''Muggiaea atlantica'' is a small colonial siphonophore, but one of the two nectophores (swimming bells) is undeveloped. The remaining nectophore grows to a length of about . It is translucent and has five straight, longitudinal ridges, some of which may form a keel. The hydroecium (ventral cavity) is about one third of the length of the nectophore, and the long slender somatocyst (extension of the gastrovascular system) reaches the apex of the nectosac (central cavity) and sometimes contains oi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western South American Coastal Fauna
Western may refer to: Places *Western, Nebraska, a village in the US *Western, New York, a town in the US *Western Creek, Tasmania, a locality in Australia *Western Junction, Tasmania, a locality in Australia *Western world, countries that identify with shared "Western" culture Arts and entertainment Films * ''Western'' (1997 film), a French road movie directed by Manuel Poirier * ''Western'' (2017 film), a German-Austrian film Genres *Western (genre), a category of fiction and visual art centered on the American Old West **Western fiction, the Western genre as featured in literature **Western music (North America), a type of American folk music Music * ''Westerns'' (EP), an EP by Pete Yorn *WSTRN, a British hip hop group from west London Business *The Western, a closed hotel/casino in Las Vegas, United States *Western Cartridge Company, a manufacturer of ammunition *Western Publishing, a defunct publishing company Educational institutions *Western Washington University i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fauna Of Tierra Del Fuego
Fauna is all of the animal life present in a particular region or time. The corresponding term for plants is ''flora'', and for fungi, it is ''funga''. Flora, fauna, funga and other forms of life are collectively referred to as '' biota''. Zoologists and paleontologists use ''fauna'' to refer to a typical collection of animals found in a specific time or place, e.g. the "Sonoran Desert fauna" or the "Burgess Shale fauna". Paleontologists sometimes refer to a sequence of faunal stages, which is a series of rocks all containing similar fossils. The study of animals of a particular region is called faunistics. Etymology ''Fauna'' comes from the name Fauna, a Roman goddess of earth and fertility, the Roman god Faunus, and the related forest spirits called Fauns. All three words are cognates of the name of the Greek god Pan, and ''panis'' is the Greek equivalent of fauna. ''Fauna'' is also the word for a book that catalogues the animals in such a manner. The term was first used by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Of Chile
Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and Chondrichthyes, cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of living fish species are ray-finned fish, belonging to the class Actinopterygii, with around 99% of those being teleosts. The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a vertebrate, true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed placodermi, external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) became formidable marine predators rather than ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bythaelurus
''Bythaelurus'' is a genus of deep-water catsharks and part of the family Scyliorhinidae. The genus ''Bythaelurus'' Compagno 1988 was first described as a subgenus of ''Halaelurus'' Gill 1862 based on several morphological characteristics including a soft body with thin skin, a bluntly rounded snout without a pointed, knob-like tip, and eyes not noticeably elevated on the dorsal surface of the head. Members of this genus are generally found in deep water and have more somber body coloration. Species There are currently 14 recognized species in this genus: * ''Bythaelurus alcockii'' ( Garman, 1913) (Arabian catshark) * ''Bythaelurus bachi'' Weigmann ''et al.'', 2016 (Bach's catshark) * ''Bythaelurus canescens'' ( Günther, 1878) (dusky catshark) * ''Bythaelurus clevai'' ( Séret, 1987) (broadhead catshark) * ''Bythaelurus dawsoni'' ( S. Springer, 1971) (New Zealand catshark) * ''Bythaelurus giddingsi'' J. E. McCosker, Long & C. C. Baldwin, 2012 (Galápagos catshark) * ''Byth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterocarpus
''Heterocarpus'' is a genus of deep-sea Caridea, shrimp, mainly of tropical areas all over the world. Description ''Heterocarpus'' is characterised by the highly unequal second pair of pereiopods: one side is long and thin and the other is short but stronger, besides the carapace with one or more longitudinal carinae. Species So far, 30 species have been described for this genus, ''Heterocarpus ensifer'' being the type species. The described species of this genus are: *''Heterocarpus abulbus'' Yang, Chan & Chu, 2010 *''Heterocarpus affins'' Faxon, 1893 *''Heterocarpus alexandri'' A. Milne-Edwards, 1883 *''Heterocarpus amacula'' Crosnier, 1988 *''Heterocarpus calmani'' Crosnier, 1988 *''Heterocarpus chani'' Li, 2006 *''Heterocarpus corona'' Yang, Chan & Chu, 2010 *''Heterocarpus cutressi'' Monterossa, 1988 *''Heterocarpus dorsalis'' Bate, 1888 *''Heterocarpus ensifer'' A. Milne-Edwards, 1881 *''Heterocarpus inopinatus'' Tavares, 1999 *''Heterocarpus intermedius'' Crosnier, 1999 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diel Vertical Migration
Diel vertical migration (DVM), also known as diurnal vertical migration, is a pattern of movement used by some organisms, such as copepods, living in the ocean and in lakes. The word ''diel'' comes from the Latin ''dies'' day, and means a 24-hour period. The migration occurs when organisms move up to the uppermost layer of the sea at night and return to the bottom of the daylight zone of the oceans or to the dense, bottom layer of lakes during the day. It is important to the functioning of deep-sea food webs and the biologically driven sequestration of carbon. In terms of biomass, it is the largest synchronous migration in the world. It is not restricted to any one taxon as examples are known from crustaceans (copepods), molluscs (squid), and ray-finned fishes (trout). The phenomenon may be advantageous for a number of reasons, most typically to access food and avoid predators. It is triggered by various stimuli, the most prominent being response to changes in light i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Demersal Fish
Demersal fish, also known as groundfish, live and feed on or near the bottom of seas or lakes (the demersal zone).Walrond Carl . "Coastal fish - Fish of the open sea floor"Te Ara - the Encyclopedia of New Zealand. Updated 2 March 2009 They occupy the sea floors and lake beds, which usually consist of mud, sand, gravel or rocks. In coastal waters they are found on or near the continental shelf, and in deep waters they are found on or near the continental slope or along the continental rise. They are not generally found in the deepest waters, such as abyssal depths or on the abyssal plain, but they can be found around seamounts and islands. The word ''demersal'' comes from the Latin ''demergere'', which means ''to sink''. Demersal fish are bottom feeders. They can be contrasted with pelagic fish which live and feed away from the bottom in the open water column. Demersal fish fillets contain little fish oil (one to four percent), whereas pelagic fish can contain up to 30 percent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benthos
Benthos (), also known as benthon, is the community of organisms that live on, in, or near the bottom of a sea, river, lake, or stream, also known as the benthic zone.Benthos from the Census of Antarctic Marine Life website This community lives in or near marine or freshwater sedimentary environments, from s along the , out to the , and t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diphyidae
The Diphyidae are a family of siphonophores. These are colonial siphonophores with two nectophores (swimming bells) arranged one behind the other. The front one includes a somatocyst (extension of the gastrovascular system), while the hind one does not. The somatocyst often contains an oil droplet for buoyancy control. A nectosac (central cavity with muscular walls) in each nectophore allows the organism to swim efficiently. Systematics The World Register of Marine Species includes the following taxa in the family Diphyidae: *Subfamily Diphyinae Quoy & Gaimard, 1827 ** Genus '' Chelophyes'' Totton, 1932 *** ''Chelophyes appendiculata'' (Eschscholtz, 1829) *** ''Chelophyes contorta'' (Lens & van Riemsdijk, 1908) ** Genus '' Dimophyes'' Moser, 1925 *** ''Dimophyes arctica'' (Chun, 1897) ** Genus '' Diphyes'' Cuvier, 1817 *** ''Diphyes antarctica'' Moser, 1925 *** ''Diphyes bojani'' (Eschscholtz, 1825) *** ''Diphyes chamissonis'' Huxley, 1859 *** ''Diphyes dispar'' Chamisso & Ey ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catshark
Catsharks are ground sharks of the family Scyliorhinidae. They are the largest family of sharks with around 160 species placed in 17 genera. Although they are generally known as catsharks, some species can also be called dogfish due to previous naming. However, a dogfish may generally be distinguished from a catshark as catsharks lay eggs while dogfish have live young. Like most bottom feeders, catsharks feed on benthic invertebrates and smaller fish. They are not harmful to humans. The family is paraphyletic, containing several distinct lineages that do not form a monophyletic group. Genera The family includes 17 genera and over 150 species, making it the largest family of sharks. * '' Akheilos'' White, Fahmi & Weigmann, 2019 * ''Apristurus'' Garman, 1913 * ''Asymbolus'' Whitley, 1939 * ''Atelomycterus'' Garman, 1913 * ''Aulohalaelurus'' Fowler, 1934 * ''Bythaelurus'' Compagno, 1988 * ''Cephaloscyllium'' T. N. Gill, 1862 * ''Cephalurus'' Bigelow and Schroeder, 1941 * ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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