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Diastylidae
Diastylidae is one of the eight most commonly recognised families of crustaceans of the order Cumacea. They are marine creatures especially common around the 30th parallel north. Anatomy Diastylidae have a medium to large, free telson, that has not fused with the last pleon segment. The telson usually bears two terminal setae. Males have generally two pairs of pleopods, though in rare cases they may be rather small or even entirely absent. The flagellum of the second antenna reaches past the pereon. In females the second antenna is much smaller than the first antenna. In males the third maxilliped and the first four pereiopods almost always have exopods (outer branches). In females they may, in rare cases, be absent from all but the third maxillipeds, and the two first pereiopods. The interior branch of the uropods are generally made up of two or three segments, but in some rare case may have just one. Members of this family frequently show clear sexual dimorphism. Genera T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dimorphostylis
''Dimorphostylis'' is a genus of crustacean from the Diastylidae Diastylidae is one of the eight most commonly recognised families of crustaceans of the order Cumacea. They are marine creatures especially common around the 30th parallel north. Anatomy Diastylidae have a medium to large, free telson, that has ... family. The scientific name of this species was first published in 1921 by Zimmer. Species The following species are accepted within ''Dimorphostylis'': * '' Dimorphostylis acroplicata'' Harada, 1960 * '' Dimorphostylis asiatica'' Zimmer, 1908 * '' Dimorphostylis australis'' Foxon, 1932 * '' Dimorphostylis bathyelegans'' Akiyama, 2011 * '' Dimorphostylis brevicarpus'' Akiyama, 2011 * '' Dimorphostylis brevicaudata'' (Zimmer, 1903) * '' Dimorphostylis colefaxi'' Hale, 1945 * '' Dimorphostylis cornigera'' Harada, 1960 * '' Dimorphostylis coronata'' Gamo, 1960 * '' Dimorphostylis cottoni'' Hale, 1936 * '' Dimorphostylis echinata'' Gamo, 1962 * '' Dimorphostylis eleg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cumacea
Cumacea is an order of small marine crustaceans of the superorder Peracarida, occasionally called hooded shrimp or comma shrimp. Their unique appearance and uniform body plan makes them easy to distinguish from other crustaceans. They live in soft-bottoms such as mud and sand, mostly in the marine environment. There are more than 1,500 species of cumaceans formally described. The species diversity of Cumacea increases with depth. Anatomy Cumaceans have a strongly enlarged cephalothorax with a carapace, a slim abdomen, and a forked tail. The length of most species varies from . The carapace of a typical cumacean is composed of several fused dorsal head parts and the first three somites of the thorax. This carapace encloses the appendages that serve for respiration and feeding. In most species, there are two eyes at the front side of the head shield, often merged into a single dorsal eye lobe. The five posterior somites of the thorax form the pereon. The pleon (abdomen) consists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diastylis
''Diastylis'' is a genus of crustaceans which belong to the family Diastylidae. It includes the following species: *'' Diastylis abboti'' Gladfelter, 1975 *'' Diastylis abbreviata'' G. O. Sars, 1871 *'' Diastylis acuminata'' Jones, 1960 *''Diastylis alaskensis'' Calman, 1912 *''Diastylis algoae'' Zimmer, 1908 *'' Diastylis ambigua'' Le Loeuff & Intes, 1972 *'' Diastylis anderssoni'' Zimmer, 1907 *'' Diastylis antillensis'' Sars, 1873 *''Diastylis araruamae'' Petrescu & Bacescu, 1991 *''Diastylis argentata'' Calman, 1912 *''Diastylis aspera'' Calman, 1912 *''Diastylis bidentata'' Calman, 1912 *''Diastylis bispinosa'' (Stimpson, 1853) *''Diastylis boecki'' Zimmer, 1930 *''Diastylis bradyi'' Norman, 1879 *''Diastylis brasilianus'' Bacescu & Petrescu, 1991 *''Diastylis calderoni'' Donath-Hernandez, 1988 *''Diastylis californica'' Zimmer, 1936 *''Diastylis corniculata'' Hale, 1937 *'' Diastylis cornuifer'' Blake, 1929 *'' Diastylis cornuta'' (Boeck, 1864) *'' Diastylis crenellata'' Wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cumacea En
Cumacea is an order of small marine crustaceans of the superorder Peracarida, occasionally called hooded shrimp or comma shrimp. Their unique appearance and uniform body plan makes them easy to distinguish from other crustaceans. They live in soft-bottoms such as mud and sand, mostly in the marine environment. There are more than 1,500 species of cumaceans formally described. The species diversity of Cumacea increases with depth. Anatomy Cumaceans have a strongly enlarged cephalothorax with a carapace, a slim abdomen, and a forked tail. The length of most species varies from . The carapace of a typical cumacean is composed of several fused dorsal head parts and the first three somites of the thorax. This carapace encloses the appendages that serve for respiration and feeding. In most species, there are two eyes at the front side of the head shield, often merged into a single dorsal eye lobe. The five posterior somites of the thorax form the pereon. The pleon (abdomen) consists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diastylis Laevis
''Diastylis laevis'' is a species of crustacean belonging to the order Cumacea and the genus '' Diastylis''. It occurs from Skagerrak to the Côte d'Ivoire, but not in the Mediterranean Sea The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Western and Southern Europe and Anatolia, on the south by North Africa, and on the .... It grows up to long. References Cumacea Crustaceans of the Atlantic Ocean Crustaceans described in 1869 {{Malacostraca-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crustaceans
Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group can be treated as a subphylum under the clade Mandibulata. It is now well accepted that the hexapods emerged deep in the Crustacean group, with the completed group referred to as Pancrustacea. Some crustaceans (Remipedia, Cephalocarida, Branchiopoda) are more closely related to insects and the other hexapods than they are to certain other crustaceans. The 67,000 described species range in size from '' Stygotantulus stocki'' at , to the Japanese spider crab with a leg span of up to and a mass of . Like other arthropods, crustaceans have an exoskeleton, which they moult to grow. They are distinguished from other groups of arthropods, such as insects, myriapods and chelicerates, by the possession of biramous (two-parted) limbs, and by th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sexual Dimorphism
Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most animals and some plants. Differences may include secondary sex characteristics, size, weight, colour, markings, or behavioural or cognitive traits. These differences may be subtle or exaggerated and may be subjected to sexual selection and natural selection. The opposite of dimorphism is ''monomorphism'', which is when both biological sexes are phenotypically indistinguishable from each other. Overview Ornamentation and coloration Common and easily identified types of dimorphism consist of ornamentation and coloration, though not always apparent. A difference in coloration of sexes within a given species is called sexual dichromatism, which is commonly seen in many species of birds and reptiles. Sexual selection leads to the exaggerated dim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annals And Magazine Of Natural History
The ''Journal of Natural History'' is a scientific journal published by Taylor & Francis focusing on entomology and zoology. The journal was established in 1841 under the name ''Annals and Magazine of Natural History'' (''Ann. Mag. Nat. Hist.'') and obtained its current title in 1967. The journal was formed by the merger of the ''Magazine of Natural History'' (1828–1840) and the ''Annals of Natural History'' (1838–1840; previously the ''Magazine of Zoology and Botany'', 1836–1838) and '' Loudon and Charlesworth's Magazine of Natural History''. In September 1855, the ''Annals and Magazine of Natural History'' published "On the Law which has Regulated the Introduction of New Species", a paper which Alfred Russel Wallace had written while working in the state of Sarawak on the island of Borneo in February of that year. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cuma (genus)
Cuma or CUMA may refer to: Places and jurisdictions ;In Europe * Cuma (Euboea), former name of Kymi, a coastal town on Euboea island, Greece * Cuma (Italy), an ancient Greek colony, near Naples ** its Diocese of Cuma (Italy), former bishopric and present Latin titular see * Monte di Cuma, a mountain near Licola, Italy, in Naples province * Cuma-ı Bala, an old Turkish name for Blagoevgrad in Bulgaria * Eski Cuma, an old Turkish name for Targovishte in Bulgaria ;Elsewhere * Cuma (Aeolis), an Aeolian city in Asia Minor ** its Diocese of Cuma (Asia Minor), former bishopric and present Latin titular see * Cuma, Azerbaijan, a village in Azerbaijan * Cuma, Namibia, a village in the Rundu Rural East constituency of Namibia People * Tyler Cuma, a Canadian major junior ice hockey defenceman * Cuman people, nomadic people in Eurasia Mythology * Čuma, a personification of plague in Serbian mythology Abbreviations * CUMA, a type of frogman's rebreather designed and made ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
