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Pterygioteuthis
''Pterygioteuthis'' is a genus of squid in the family Pyroteuthidae. Members are differentiated from the genus ''Pyroteuthis ''Pyroteuthis'' is a genus of squid in the family Pyroteuthidae. It is differentiated from the genus '' Pterygioteuthis'' by size, head shape and behaviour. Species within the genus are separated by the arrangement of tentacular photophores; the ...'' due to size and head shape. The genus is characterised by the presence of a lidded photophore over each eye. References External linksTree of Life web project: ''Pterygioteuthis'' Pyroteuthidae Bioluminescent molluscs {{squid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pterygioteuthis Giardi
''Pterygioteuthis giardi'' is a species of squid in the family Pyroteuthidae. It is known as the roundear enope squid. The Specific name (zoology), specific name honors the France, French Zoology, zoologist and Marine Biology, marine biologist Alfred Mathieu Giard (1846-1908). Anatomy and morphology Squid in the family Pyroteuthidae have Photophores (small, light-producing organs) on viscera (internal organs), stalk of tentacles, and five large and ten small photophores underneath the eyes. The squid has a wide, triangular mantle with a rounded posterior end and rounded fins on the distal dorsal end of the mantle. Their mantles are generally less than 34 mm long. Their tentacles look like bent clubs due to their permanent constriction. Adult squid in the ''Pterygioteuthis'' genera lack hooks on their tentacular clubs, but do have some hooks on the arms. Male squid have a specialized arm used to transfer sperm to females called hectocotyli. Females do not have suckers o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pterygioteuthis
''Pterygioteuthis'' is a genus of squid in the family Pyroteuthidae. Members are differentiated from the genus ''Pyroteuthis ''Pyroteuthis'' is a genus of squid in the family Pyroteuthidae. It is differentiated from the genus '' Pterygioteuthis'' by size, head shape and behaviour. Species within the genus are separated by the arrangement of tentacular photophores; the ...'' due to size and head shape. The genus is characterised by the presence of a lidded photophore over each eye. References External linksTree of Life web project: ''Pterygioteuthis'' Pyroteuthidae Bioluminescent molluscs {{squid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pterygioteuthis Gemmata
''Pterygioteuthis gemmata'' is a species of squid in the family Pyroteuthidae Pyroteuthidae (the fire squids) is a family of squids. The family comprises two genera. Species are diurnally mesopelagic, migrating into surface waters during the night. The family is characterised by the tentacles, which have a permanent con .... References External linksTree of Life web project: ''Pterygioteuthis gemmata'' Pterygioteuthis Cephalopods described in 1908 [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pterygioteuthis Microlampas
''Pterygioteuthis microlampas'' is a species of squid in the family Pyroteuthidae. They occur from northern New Zealand oceans to the Hawaiian Islands, but they do not overlap with the species '' P. gemmata'', which lives in more southern waters. While there are numerous similarities between these two species, they are separated by the smaller mature size of ''P. microlampas'' (maximum mantle A mantle is a piece of clothing, a type of cloak. Several other meanings are derived from that. Mantle may refer to: *Mantle (clothing), a cloak-like garment worn mainly by women as fashionable outerwear **Mantle (vesture), an Eastern Orthodox ve ... length of 23 mm) and the fewer number of hooks on males. The species reproduce sexually during the late autumn to early winter, producing eggs with a diameter of 0.9 mm. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pterygioteuthis Hoylei
''Pterygioteuthis hoylei'' is a species of squid in the family Pyroteuthidae. It is considered conspecific with '' Pterygioteuthis giardi'' by some authorities. It can be identified from ''P. giardi'' by having four photophores on the tentacles and many chromatophores spread along the tentacle stalk and around the aboral surface of the tentacular club. It is also slightly larger than ''P. giardi'', it has been so far recorded only from the eastern tropical Pacific Ocean where it is the only species of in the family Pyroteuthidae to occur there, although its actual distribution may be wider than currently known. The specific name honours the British malacologist William Evans Hoyle Dr William Evans Hoyle FRSE (28 January 1855 – 7 February 1926) was a noted British zoologist. A specialist in deep sea creatures he worked on classification and illustrations from the Challenger Expedition from 1882 to 1888. Life Hoyle ... (1855–1926). References {{Taxonbar, from= ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyroteuthidae
Pyroteuthidae (the fire squids) is a family of squids. The family comprises two genera. Species are diurnally mesopelagic, migrating into surface waters during the night. The family is characterised by the tentacles, which have a permanent constriction and bend near the base; and photophores occurring on the tentacles, eyeballs, and viscera In biology, an organ is a collection of tissues joined in a structural unit to serve a common function. In the hierarchy of life, an organ lies between tissue and an organ system. Tissues are formed from same type cells to act together in a f .... Members reach mantle lengths of 23–50 mm. Paralarvae of the family are common around the Hawaiian Islands, with up to 17% of collected specimens in the area belonging to Pyroteuthidae.John R. Bower, Michael P. Seki, Richard E. Young, Keith A. Bigelow, Jed Hirota, Pierre FlamentCephalopod paralarvae assemblages in Hawaiian Islands waters 14 November 2008. Species *Genus '' Pterygiote ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyroteuthis
''Pyroteuthis'' is a genus of squid in the family Pyroteuthidae. It is differentiated from the genus '' Pterygioteuthis'' by size, head shape and behaviour. Species within the genus are separated by the arrangement of tentacular photophores; the shape of the hectocotylus, and the shape of the hectocotylus hooks. With the exception of the Tropical Eastern Pacific, the genus is circumpolar in tropical and temperate oceans. The species '' P. addolux'' is the only member to occur in the 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 .... References External linksTree of Life web project: ''Pyroteuthis'' Pyroteuthidae Cephalopod genera Bioluminescent molluscs Taxa named by William Evans Hoyle {{squid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henri Fischer
Henri is an Estonian, Finnish, French, German and Luxembourgish form of the masculine given name Henry. People with this given name ; French noblemen :'' See the 'List of rulers named Henry' for Kings of France named Henri.'' * Henri I de Montmorency (1534–1614), Marshal and Constable of France * Henri I, Duke of Nemours (1572–1632), the son of Jacques of Savoy and Anna d'Este * Henri II, Duke of Nemours (1625–1659), the seventh Duc de Nemours * Henri, Count of Harcourt (1601–1666), French nobleman * Henri, Dauphin of Viennois (1296–1349), bishop of Metz * Henri de Gondi (other) * Henri de La Tour d'Auvergne, Duke of Bouillon (1555–1623), member of the powerful House of La Tour d'Auvergne * Henri Emmanuel Boileau, baron de Castelnau (1857–1923), French mountain climber * Henri, Grand Duke of Luxembourg (born 1955), the head of state of Luxembourg * Henri de Massue, Earl of Galway, French Huguenot soldier and diplomat, one of the principal commanders of Batt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Chun
Carl Chun (1 October 1852 – 11 April 1914) was a German marine biologist. Chun was born in Höchst, today a part of Frankfurt, and studied zoology at the University of Leipzig, where from 1878 to 1883 he was privat-docent of zoology and an assistant to Rudolf Leuckart. After professorial posts in Königsberg (1883–1891) and Breslau (1891–1898), he returned to Leipzig as a professor of zoology.UNI Leipzig Professorenkatalog (biographical sketch) In 1888, Chun described seasonal vertical migration (SVM) which has a periodicity of ca. 1 year. Chun examined depth-stratified net samples from the |
Georg Johann Pfeffer
Georg Johann Pfeffer (1854–1931) was a German zoologist, primarily a malacologist, a scientist who studies mollusks. Pfeffer was born in Berlin. In 1887 he became curator of the , which was established in 1843 and destroyed during World War II. Pfeffer's published writings were mainly about cephalopods. The World Register of Marine Species database lists 133 marine taxa named by Pfeffer When Pfeffer's name is listed as an authority for a taxon such as the land snail genus ''Lamellaxis'' Strebel & Pfeffer, 1882, his name is ''not'' simply an orthographic error for the more commonly encountered molluscan authority Pfeiffer, i.e. Ludwig Karl Georg Pfeiffer, who lived 50 years earlier, from 1805 to 1877. Georg Johann Pfeffer also studied amphibians and reptiles, naming several new species. Two species of reptiles are named in his honor, ''Calamaria pfefferi Pfeffer's reed snake, ''Calamaria pfefferi'', is a species of dwarf snake in the family Colubridae. The spe ... [...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 (cephalopod), 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 Aquatic locomotion#Jet propulsion, jet propulsion, and largely locate their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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, however unlike an eye it is optimized to produce light, not absorb it. The bioluminescence can variously be produced from compounds during the digestion of prey, from specialized mitochondrial cells in the organism called photocytes ("light producing" cells), or, similarly, associated with symbiotic bacteria in the organism that are cultured. The character of photophores is important in the identification of deep sea fishes. Photophores on fish are used for attracting food or for camouflage from predators by counter-illumination. Photophores are found on some cephalopods including the firefly squid, which can create impressive light displays, as well as numerous other deep sea organisms such as the pocket shark Mollisquama mississippien ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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