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Pencil Squid
Loliginidae, commonly known as pencil squids, is an aquatic Family (biology), family of squid classified in the order Myopsida. Taxonomy The family Loliginidae was formerly classified in the order Teuthida. Taxonomic list The classification below (including 47 species) follows Vecchione ''et al.'' (2005) and the Tree of Life Web Project (2010).Vecchione, M. & R.E. Young. (2010)Loliginidae Lesueur, 1821 The Tree of Life Web Project. Several doubtfully distinct species have also been described; see the genus articles for these. *Genus ''Afrololigo'' **''Afrololigo mercatoris'', Guinean thumbstall squid *Genus ''Alloteuthis'' **''Alloteuthis africana'', African squid **''Alloteuthis media'', midsize squid **''Alloteuthis subulata'', European common squid *Genus ''Doryteuthis'' **Subgenus ''Amerigo'' ***''Doryteuthis gahi'', Patagonian squid ***''Doryteuthis ocula'', bigeye inshore squid ***''Doryteuthis opalescens'', opalescent inshore squid ***''Doryteuthis pealeii'', longfi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene
The Eocene ( ) is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes from the Ancient Greek (''Ēṓs'', 'Eos, Dawn') and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch.See: *Letter from William Whewell to Charles Lyell dated 31 January 1831 in: * From p. 55: "The period next antecedent we shall call Eocene, from ήως, aurora, and χαινος, recens, because the extremely small proportion of living species contained in these strata, indicates what may be considered the first commencement, or ''dawn'', of the existing state of the animate creation." The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isoto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alloteuthis Media
''Alloteuthis media'', the midsize squid or little squid, is a species of squid in the family Loliginidae from the eastern Atlantic and the Mediterranean Sea. It is generally a by-catch species in trawl fisheries, although there is an active fishery in the western Mediterranean. Description ''Alloteuthis media'' is hard to tell apart from '' Alloteuthis subulata''. The arms and tentacles of ''A. media'' are proportionately slender compared to ''A. subulata'' but the two species are best separated by the lateral edge of the mantle, which in ''A. media'' extends into a short pointed tail of up to 10mm in length in adults. It grows to a total body length of 200 mm long, with a maximum mantle length of 120mm and the females being larger than the males, with the length of the heart-shaped fins, including the tail, is less than a half the length of the mantle. The hear shape of the fins is produced by their convex anterior ends and then their narrowing posterior edges which becom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loligo
''Loligo'' is a genus of squid and one of the most representative and widely distributed groups of myopsid squid. The genus was first described by Jean Baptiste Lamarck in 1798. However, the name had been used earlier than Lamarck ( Schneider, 1784; Linnaeus, 1758) and might even have been used by Pliny. In the early 19th century, this generic name was often used as a grouping for all true squid. All three species of ''Loligo'' are caught by commercial fisheries, most abundantly by traditional trawling methods (mobile gear). In the United States of America, Longfin squid are federally regulated under the Atlantic Mackerel, Squid, and Butterfish Management Plan. '' Loligo vulgaris'' and others are noted for being attracted to lights at night; they can therefore be fished using different light-attraction methods. Commercial fishing is heavily regulated in the United States, and fishing using mobile gear is only permitted during daylight hours. However, the recreational fishe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterololigo Bleekeri
''Heterololigo'' is a monotypic genus of squids containing the single species ''Heterololigo bleekeri''. It was formerly classified in the genus ''Loligo''; some authors still include it there, but DNA evidence supports its separation into a genus of its own. This species is known by the common name spear squid, or ''yari-ika'' in Japanese. Lifespan It has a life span of about one year. Description It can be distinguished from other species in its family by its shorter tentacles. Habitat and distribution This squid is native to the western Pacific Ocean along the coast of Asia. It spawns in spring and summer in the northern part of its range, and in winter farther south. They are pelagic, found from around . Reproduction Like most Cephalopods, they are gonochoric. Male adults will usually die after spawning, and female adults after brooding. A unique aspect of the reproduction of this species has been well studied. The female has two sperm-storage sites in its body. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doryteuthis Sanpaulensis
''Doryteuthis'' is a genus of squid from the waters of the western Atlantic and eastern Pacific, off the coast of the Americas. The various species are the common inshore squids of American waters. Some species are important quarry species for fisheries. In ''Doryteuthis'' the tentacular clubs are expanded and bear suckers in 4 series. The hectocotylus is on the left ventral arm IV with unmodified suckers near the base, lack of a ventral crest while the reduced on elongated stalks form papillae on the dorsal series or on both dorsal and ventral series. The fins are situated in a posterior position. The spermatophore has a short, cement body cement body and they do not have any photophores. Taxonomy ''Doryteuthis'' is divided into two subgenera, ''Amerigo'' and ''Doryteuthis''. The species in each subgenus are: * Subgenus ''Amerigo'' ** '' Doryteuthis gahi'' (d'Orbigny, 1835) Patagonian squid ** '' Doryteuthis ocula'' (Cohen, 1976) bigeye inshore squid ** '' Doryteuthis opalesc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doryteuthis Roperi
''Doryteuthis roperi'', commonly known as the roper inshore squid, is a small-sized species of squid in the Loliginidae family. It has a maximum mantle length of . It is found in the Western Atlantic Ocean; the Caribbean Sea and the Gulf of Mexico The Gulf of Mexico () is an oceanic basin and a marginal sea of the Atlantic Ocean, mostly surrounded by the North American continent. It is bounded on the northeast, north, and northwest by the Gulf Coast of the United States; on the southw ..., at a depth of between . Anatomy ''Doryteuthis roperi'' has a long, slender mantle and rhombodial shaped fins. References Molluscs of the Atlantic Ocean roperi Molluscs described in 1976 {{Squid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doryteuthis Plei
''Doryteuthis plei'', also known as the slender inshore squid or arrow squid, is a medium-sized squid belonging to the family Loliginidae. It occurs abundantly in coastal waters of the Atlantic Ocean, from Argentina northward to North Carolina. Description As both common names imply, these squid have elongate, cylindrical bodies with a length to width ratio of 7:1. The arms are in contrast short and weak; the two tentacles are somewhat less than the mantle length. The rhombus-shaped fins are large, up to about 50 percent of the mantle length. Running the ventral length of the mantle is a noticeable ridge. The squid are a reddish orange colour with a large complement of chromatophores. The suckers of the arms possess blunt teeth. On the meaty ends (''clubs'') of the tentacles, there are four rows of suckers; the inner two (''mesial'') rows are three times as large as the outer two (''marginal'') rows. The larger suckers have horny rings with up to 45 teeth. These squid reach ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doryteuthis Surinamensis
''Doryteuthis surinamensis'', also known as the Surinam squid, is a small species of squid in the Loliginidae family. It is found in the west South Atlantic Ocean, off the coast of Suriname Suriname, officially the Republic of Suriname, is a country in northern South America, also considered as part of the Caribbean and the West Indies. It is a developing country with a Human Development Index, high level of human development; i ..., in depths between 27 and 37 meters. It grows to up to 12cm. References surinamensis Molluscs of the Atlantic Ocean Molluscs described in 1974 {{Squid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doryteuthis Pealeii
The longfin inshore squid (''Doryteuthis pealeii'') is a species of squid of the family Loliginidae. Description This species of squid is often seen with a reddish hue, but like many types of squid can manipulate its color, varying from a deep red to a soft pink. The dorsal mantle length of some males can reach up to 50 cm, although most squid commercially harvested are smaller than 30 cm long. This species exhibits sexual dimorphism, with most males growing faster and reaching larger sizes than females. Distribution The longfin inshore squid is found in the North Atlantic, schooling in continental shelf and slope waters from Newfoundland to the Gulf of Venezuela. It is commercially exploited, especially in the range from the Southern Georges Bank to Cape Hatteras. The population makes seasonal migrations that appear to be related to bottom water temperatures; they move offshore during late autumn to overwinter along the edge of the continental shelf and return i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doryteuthis Opalescens
''Doryteuthis opalescens'', the opalescent inshore squid or market squid, is a small species of squid in the family Loliginidae. It is a myopsid squid, a near shore group with corneas over their eyes. The species is found in the eastern Pacific Ocean from Baja California peninsula, Baja California, Mexico to Alaska, United States, and as an inshore squid can be found within a range of off the coast. Description Adult ''Doryteuthis opalescens'' can reach a total size of 11 inches (28 cm). Males are typically larger with a mantle (mollusc), mantle length of 5 – 3 1/2 inches (7.5 to 9 cm), while females are 5 –7 inches (13 to 19 cm) in mantle length.Morris, Robert H., Donald P. Abbott, Eugene R. Haderlie. 1980. ''Intertidal Invertebrates of California''. Stanford: Stanford University Press. The mantle of ''D. opalescens'' is not fused to the head and its body is 4 to 5 times longer than it is wide, with fins equal in both length and width. This squid has 8 arms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doryteuthis Ocula
''Doryteuthis ocula'', commonly known as the bigeye inshore squid, is a species of squid in the family Loliginidae. It is also known as ''Loligo ocula''. It is found in the Caribbean Sea, and the Western Atlantic around Cuba Cuba, officially the Republic of Cuba, is an island country, comprising the island of Cuba (largest island), Isla de la Juventud, and List of islands of Cuba, 4,195 islands, islets and cays surrounding the main island. It is located where the .... It is found in depths between 250m and 360m from the surface. Anatomy ''D. ocula'' has a blunt mantle, with rounded rhomboidal fins. It is a small-sized squid, with a mantle length up to 127mm. It has robust tentacles, clubs expanded. References Cephalopods described in 1976 ocula {{Squid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
