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Cycloteuthidae
The Cycloteuthidae are a family in the order Oegopsida, comprising two genera. While physically dissimilar, molecular evidence supports the relatedness of the genera. The family is found primarily in mesopelagic tropical to subtropical waters. Cycloteuthidae are characterised by a triangular funnel locking apparatus. Species *Genus '' Cycloteuthis'' **'' Cycloteuthis akimushkini'' * **'' Cycloteuthis sirventi'' * *Genus ''Discoteuthis ''Discoteuthis'' is a genus of squid in the family Cycloteuthidae. It is distinguished from the genus '' Cycloteuthis'' by the absence of a tail on the mantle. The genus occurs in tropical The tropics are the regions of Earth surrounding ...'' **'' Discoteuthis discus'' * **'' Discoteuthis laciniosa'' ** ''Discoteuthis'' sp. A * ** ''Discoteuthis'' sp. B The entries listed above with an asterisk (*) are questionable and need further study to determine if they are valid or synonyms. References External links Tree of Life web project ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oegopsida
Oegopsida is one of the two orders of squid in the superorder Decapodiformes, in the class Cephalopoda. Together with the Myopsina, it was formerly considered to be a suborder of the order Teuthida, in which case it was known as Oegopsina. This reclassification is due to Oegopsina and Myopsina not being demonstrated to form a clade. The Oegopsida are an often pelagic squid, with some nerito-oceanic species associated with sea mounts. They consist of 24 families and 69 genera. They have these characters in common: the head is without tentacle pockets, eyes lack a corneal covering, arms and tentacle clubs may have hooks, the buccal supports are without suckers, and oviducts in females are paired. Two families, the Bathyteuthidae and Chtenopterygidae, which have features characteristic of the Myopsida while retaining others common to the Oegopsina, are sometimes placed in the Bathyteuthoidea. The Oegopsida differ from the coastal Myopsida, characterised by the genus ''Loligo'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cycloteuthis Akimushkini
''Cycloteuthis'' is a genus of squid in the family Cycloteuthidae. It is distinguished from the genus ''Discoteuthis'' by the presence of a tail on the mantle. The species '' C. akimushkini'' is currently considered a junior synonym of '' C. sirventi'', however this is inconclusive and the World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. Content The content of the registry is edited and maintained by scientific specialis ... has ''C. akimushkini'' as a valid species. The genus contains bioluminescent species. References External links Tree of Life web project: Cycloteuthis Squid Cephalopod genera Bioluminescent molluscs {{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 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 jet propulsion, and largely locate their prey by sight. They are among the most intelligent o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cycloteuthis
''Cycloteuthis'' is a genus of squid in the family Cycloteuthidae. It is distinguished from the genus ''Discoteuthis'' by the presence of a tail on the mantle. The species '' C. akimushkini'' is currently considered a junior synonym of '' C. sirventi'', however this is inconclusive and the World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. Content The content of the registry is edited and maintained by scientific specialis ... has ''C. akimushkini'' as a valid species. The genus contains bioluminescent species. References External links Tree of Life web project: Cycloteuthis Squid Cephalopod genera Bioluminescent molluscs {{squid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discoteuthis
''Discoteuthis'' is a genus of squid in the family Cycloteuthidae. It is distinguished from the genus '' Cycloteuthis'' by the absence of a tail on the mantle. The genus occurs in tropical The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in the Southern Hemisphere at S. The tropics are also referred to ... and subtropical oceans worldwide. The genus contains bioluminescent species. References External links Tree of Life web project: ''Discoteuthis'' Cephalopod genera Squid Bioluminescent molluscs {{squid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discoteuthis Sp
''Discoteuthis'' is a genus of squid in the family Cycloteuthidae. It is distinguished from the genus ''Cycloteuthis'' by the absence of a tail on the mantle. The genus occurs in tropical The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in the Southern Hemisphere at S. The tropics are also referred to ... and subtropical oceans worldwide. The genus contains bioluminescent species. References External links Tree of Life web project: ''Discoteuthis'' Cephalopod genera Squid Bioluminescent molluscs {{squid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discoteuthis Laciniosa
''Discoteuthis laciniosa'' is a species of squid in the family Cycloteuthidae. The species occurs throughout the Atlantic, Indian and Pacific Ocean 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 contin ...s. References External links Tree of Life web project: ''Discoteuthis laciniosa'' Molluscs described in 1969 Molluscs of the Indian Ocean Molluscs of the Atlantic Ocean Molluscs of the Pacific Ocean Squid {{squid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discoteuthis Discus
''Discoteuthis discus'' is a species of squids in the family Cycloteuthidae. They occur in the tropical and subtropical Atlantic Ocean and the central 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 .... While mature specimens have not been found, the unnamed species ''Discoteuthis'' sp. A has been hypothesised as the mature form. References External links Tree of Life web project: ''Discoteuthis discus'' Squid Molluscs described in 1969 {{squid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cycloteuthis Sirventi
''Cycloteuthis sirventi'' is a species of squid in the family Cycloteuthidae, of which it is the most common. It is possible that ''C. akimushkini'' is a junior synonym of ''C. sirventi''. The species occurs in the tropical to polar western Atlantic Ocean The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe .... References External linksTree of Life web project: ''Cycloteuthis sirventyi'' Squid [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adolf Naef
Adolf Naef (1 May 1883 – 11 May 1949) was a Swiss zoologist and palaeontologist who worked on cephalopods and systematics. Although he struggled with academic politics throughout his career and difficult conditions during World War I and II, his work had lasting influences on the fields of phylogenetics, morphology, and embryology. Life Naef was born in Herisau, Switzerland, to parents Martin and Berta. In 1904, he began studying philosophy and literature at the University of Zurich, but soon switched to natural sciences. He graduated in 1908 and went on to pursue a PhD under the guidance of Arnold Lang (1855—1914), a former Professor of Jena University and close friend of Ernst Haeckel as well as a long-time associate of Anton Dohrn.Rieppel, Olivier (2016). ''Phylogenetic Systematics: Haeckel to Hennig.'' CRC Press. Naef visited Dohrn's Zoological Station in Naples, Italy in 1908. Although initially planning to collect eggs from a variety of animals, he ended up stu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tropical
The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in the Southern Hemisphere at S. The tropics are also referred to as the tropical zone and the torrid zone (see geographical zone). In terms of climate, the tropics receive sunlight that is more direct than the rest of Earth and are generally hotter and wetter as they aren't affected as much by the solar seasons. The word "tropical" sometimes refers to this sort of climate in the zone rather than to the geographical zone itself. The tropical zone includes deserts and snow-capped mountains, which are not tropical in the climatic sense. The tropics are distinguished from the other climatic and biomatic regions of Earth, which are the middle latitudes and the polar regions on either side of the equatorial zone. The tropics constitute 40% of Earth's surface area and contain 36% of Earth's landmass. , t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Funnel–mantle Locking Apparatus
The funnel–mantle locking apparatus is a structure found in many cephalopods that connects the mantle and hyponome (funnel) and restricts their movement relative to each other.Young, R.E., M. Vecchione & K.M. Mangold (1999)Cephalopoda Glossary Tree of Life Web Project. It consists of two interlocking components: one located on the mantle (often fibrous) and the other on the funnel (often cartilaginous). The apparatus may permit some anterior–posterior displacement or prevent movement altogether. Function Variability Funnel component Six major forms of the funnel locking apparatus are recognised among teuthids (lazy-T shape, inverted-T shape, straight shape, triangular shape, oval with tragus and/or antitragus, and oval shape) and several more are found in the sepioids (including the boomerang shape and keyhole shape).Young, R.E., M. Vecchione & K.M. Mangold (1997)Cephalopod Funnel Locking-Apparatus Tree of Life Web Project The Tree of Life Web Project is an Interne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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