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Opisthoteuthis
''Opisthoteuthis'' is a genus of cirrate octopuses, sometimes known as flapjack octopuses, which are found in all the world's oceans. Behavior Like other cirrates, octopuses in Opisthoteuthis are generally small, and many dwell in the deep sea. They have cirri on their arms, internal shells to support their bodies, and muscular fins for steering. Like octopuses of Grimpoteuthis ''Grimpoteuthis'' is a genus of pelagic umbrella octopuses known as the dumbo octopuses. The name "dumbo" originates from their resemblance to the title character of Disney's 1941 film ''Dumbo'', having a prominent ear-like fin which extends from ..., opisthoteuthids have been seen resting or crawling on the seafloor. Species The following 24 species have been placed in ''Opisthoteuthis'': Notes References External links * * {{Taxonbar, from=Q3816282 Octopuses Cephalopod genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opisthoteuthis Depressa - National Museum Of Nature And Science, Tokyo - DSC07566
''Opisthoteuthis'' is a genus of cirrate octopuses, sometimes known as flapjack octopuses, which are found in all the world's oceans. Behavior Like other cirrates, octopuses in Opisthoteuthis are generally small, and many dwell in the deep sea. They have cirri Giovanni Battista Cirri (1 October 1724 – 11 June 1808) was an Italian cellist and composer in the 18th century. Biography Cirri was born in Forlì in the Emilia-Romagna Region of Italy. He had his first musical training with his brother ... on their arms, internal shells to support their bodies, and muscular fins for steering. Like octopuses of Grimpoteuthis, opisthoteuthids have been seen resting or crawling on the seafloor. Species The following 24 species have been placed in ''Opisthoteuthis'': Notes References External links * * {{Taxonbar, from=Q3816282 Octopuses Cephalopod genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opisthoteuthis Agassizii
''Opisthoteuthis agassizii'' is a lesser-known, deep-sea octopus first described in 1883 by Addison E. Verrill. Like all cirrate octopuses, ''O. agassizii'' has fleshy fins to aid in swimming and a small internal shell. Males are up to four times heavier than females, and their suckers are proportionally larger. Both sexes are small. This species is found found in the north-west, and western Atlantic coasts, over depths of 277 to 1,935 meters (historic records from east Atlantic coasts were likely misidentifications with other ''Opisthoteuthis''). Like other opisthoteuthids, they occupy the benthic zone, living on or near the seafloor. These octopuses most likely prey on polychaete worms and crustaceans that live on or just above the seafloor. All females of ''O. agassizii'' become sexually mature when they reach 190 grams (6.702 oz.) and all males are sexually mature once they reach 95 g (3.351 oz.). However, both sexes continue to grow after they reach maturity. While '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opisthoteuthis Californiana
''Opisthoteuthis californiana'', also known as the flapjack octopus or adorabilis, is a species of umbrella octopus. Description The flapjack octopus usually appear pinkish. They have fins above their eyes, similar to those found on some species of squid. Their maximum size is mantle length. They have eight jointed legs which are affixed together in an umbrella shape. They have a gelatinous body, which spreads into a parachute shape when maneuvering through dimly lit water. They swim by moving their fins, pulsing their webbed arms, pushing water through their funnel for jet propulsion, or all three at once. Distribution ''Opisthoteuthis californiana'' has a distribution in the northern and northeastern Pacific, ranging in the west from off central Honshū (Japan) and the Sea of Okhotsk, its northernmost range is the Bering Sea, and its eastern range is along the western coast of North America as far south as Eureka Bar, California (the type locality, at 350 m depth). The dept ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opisthoteuthis Calypso
''Opisthoteuthis calypso'' is a species of genus ''Opisthoteuthis'', which are known as the Cirrina, cirrate octopuses. Octopuses in this genus are known as the flapjack octopuses and can be found in a variety of oceans across the world. Anatomy and morphology The species of this genus show distinctive characteristics among the class Cephalopoda, including an oval shaped body compressed along the longitudinal axis, a gelatinous consistence and a large interbarachil web. This species generally has a mantle length of 5 cm. This web is what has given them their common name "flapjack" or "pancake devil fish".Norman M., 2000. Cephalopods, a world guide. Conchbooks Hackenheim, Germany, 320 pp. Other distinctive features include the presence of two small fins on the mantle, an internal U-shaped shell that has a groove along its outer surface. This particular species has eight, subequal arms (of an uneven length).Villanueva, Roger, Michael Vecchione, and Richard E. Young. 2006. Opi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opisthoteuthis Borealis
''Opisthoteuthis borealis'' is a lesser-known species of octopus found near Greenland and Iceland, especially in the Davis Strait. The species was described from 9 specimens, and is one of the most recent Opisthoteuthis species described. Not much is known about it besides its anatomy and habitat. Description ''Opisthoteuthis borealis'' belongs to the order Cirrata, a subdivision of octopuses which have fleshy fins to assist in swimming, internal shells supporting their bodies, and two threadlike structures called cirri for each sucker. Many cirrate octopuses live in deep water. Octopuses in the species ''Opisthoteuthis borealis'' have mantles up to long. They are medium-sized when compared to closely related species. They have long arms and large eyes. Males of ''O. borealis'' have some enlarged suckers; their purpose is unknown. Females don't have enlarged suckers. This specific kind of sex difference, or sexual dimorphism, is also seen in Opisthoteuthis albatrossi and Opist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opisthoteuthis Bruuni
''Opisthoteuthis bruuni'' is a species of finned cirrate octopus found along the western coast of South America. Their tissue is almost jelly-like, and they have short, round bodies. The species was originally described from 16 young specimens collected off Antofagasta, Chile, at 250 to 360 m depth. They were smaller than other known opisthoteuthids, reaching a maximum of mantle length. Even at this small, immature stage, the octopuses displayed sexual dimorphism (sex differences). The males had some enlarged suckers; three enormous suckers on each arm near the mouth were the most prominent, with a small cluster of enlarged suckers also present near the arm tips. This sort of sexual dimorphism is also found in other opisthoteuthids. Further specimens of ''O. bruuni'' have been collected from off Chile and Peru (between 5 and 33 degrees south), over a greater bathymetric range of 250 to 512 m depth. This later research also indicates a larger maximum body size (50 mm mant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opisthoteuthis Grimaldii
''Opisthoteuthis grimaldii'' is an octopus found near the Azores. ''O. grimaldii'' lives in the Northeast Atlantic Ocean from deep. This species lives far deeper than other Opisthoteuthis members in the Atlantic. The type specimen, upon which the species' description was based, was captured near Faial Island. The octopus has been found as far south as Namibian waters and as far north as British waters. In the early 1900s, many octopuses living all over the Atlantic and Indian oceans were classed as ''Opisthoteuthis grimaldii'', but later scientists decided that only those specimens found in the Eastern Atlantic Ocean actually belonged to the species. This octopus occupies in the bathyal zone, a deep area of the ocean where no sunlight reaches. Like many other cirrate octopuses, it lives on or just above the seafloor. ''Opisthoteuthis grimaldii'' is anatomically very similar to ''Opisthoteuthis borealis'', but the two species have differently structured digestive systems. It h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opisthoteuthis Albatrossi
''Opisthoteuthis albatrossi'' (common name in ja, オオクラゲダコ) is a cirrate octopus originally found off Kinkasan in Japan. This species was described from only four specimens. It is similar to ''Opisthoteuthis californiana;'' the two may be the same species. It is also similar to '' Opisthoteuthis japonica.'' ''O. albatrossi'' lives in the North Pacific, from Japanese waters to the Sea of Okhotsk. It exists at recorded depths of below the surface. Description ''Opisthoteuthis albatrossi'' is a small octopus; its total length is . Each arm has more than 80 suckers, and males have some very enlarged suckers, typical to opisthoteuthids. Like other cirrate octopuses, it has a thick, fleshy web connecting its arms; a small internal shell to support its body; and cirri Giovanni Battista Cirri (1 October 1724 – 11 June 1808) was an Italian cellist and composer in the 18th century. Biography Cirri was born in Forlì in the Emilia-Romagna Region of Italy. He ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opisthoteuthis Chathamensis
''Opisthoteuthis chathamensis'' is a species of cirrate octopus restricted to demersal habitats surrounding the Chatham Rise in New Zealand. It is commonly known as the roughy umbrella octopus. Distribution, description & threats Specimens have been recorded solely on soft sediments from 900-1438 meters deep. The type locality of ''O. chathamensis'' is near the Chatham Islands at 44°44'S, 77°15'W, 1180 m. The species is known only from this area of the Chatham Rise and off the eastern coast of the North Island of New Zealand. ''O. chathamensis'' reaches a maximum length of 18 cm TL, and a mantle length of 5.4 cm. They are described as having subequal arms with around 41-45 suckers in males and 45-55 suckers in females. Their oral surface and the webbing between their tentacles is maroon and the suckers are a pale cream. ''O. chathamensis'' is listed as Critically Endangered by the IUCN due to a 70% decrease in population size in recent years, and has not been seen since 1999, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opisthoteuthis Extensa
''Opisthoteuthis extensa'' is a species of octopus found off the west coast of Sumatra, an Indonesian island. It lives at a recorded depth of . ''O. extensa'' lives in a benthic The benthic zone is the ecological region at the lowest level of a body of water such as an ocean, lake, or stream, including the sediment surface and some sub-surface layers. The name comes from ancient Greek, βένθος (bénthos), meaning "t ... habitat, like many other cirrate octopuses. It occupies a deep part of the ocean where little sunlight penetrates. The species has not been studied in-depth; not much is known besides its habitat and anatomical description. It is only known from a single female specimen. The type specimen, upon which the description is based, has small suckers, small eyes, and arms that do not vary much in length. The fins, which it uses for locomotion, are also very small. ''O. extensa'' may be the same species as '' Opisthoteuthis pluto''. References {{Taxonbar, f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opisthoteuthis Dongshaensis
''Opisthoteuthis dongshaensis'' is a species of octopus located in the South China Sea. Name and habitat The type specimens, the animals used to formally describe the species, were found off Pratas Island. This is also known as Dong Sha Island, hence the species name. In Chinese ( transliterated to the Latin alphabet), ''O. dongshaensis'' is called . The species is only known from waters near Dong Sha Island. ''O. dongshaensis'' lives deep. ''O. dongshaensis'' occupies the benthic zone, living on or near the seafloor. It may be threatened by fishing in the area; however, further research is still needed. The type specimens of the species are held by the National Museum of Natural Science in Taichung, Taiwan. Anatomy ''O. dongshaensis'' is small and has a roughly bell-shaped body. The males, like many other octopuses in the genus ''Opisthoteuthis'', have some enlarged suckers. Males have oversized suckers in the distal field (at the ends of the arms; far from the body). Thes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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