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Mysidae
Mysidae is the largest family (biology), family of crustaceans in the order (biology), order Mysida, with over 1000 species in around 170 genera. Characteristics Members of the family Mysidae are distinguished from other mysids by the fact that the first pereopod (walking leg) has a well-developed exopod (outer branch), the carpopropodus of the endopod (inner branch) of the 3rd to 8th pereopods is divided into sub-segments and there are statocysts on the endopod of the uropods (posterior appendages). Female petalophthalmidans have two or three oostegites (flexible bristly flaps) forming the base of the Brood pouch (Peracarida), marsupium or brood pouch under the thorax, apart from the subfamily Boreomysinae, which has seven pairs of oostegites. Subfamilies and genera The following subfamilies and genera are recognised: ;Boreomysinae Holt & Tattersall, 1905 *''Neobirsteiniamysis'' Hendrickx et Tchindonova, 2020 *''Boreomysis'' G. O. Sars, 1869 ;Erythropinae Hansen, 1910 *''Aberom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mysida
Mysida is an order (biology), order of small, shrimp-like crustaceans in the malacostracan superorder Peracarida. Their common name opossum shrimps stems from the presence of a Brood pouch (Peracarida), brood pouch or "marsupium" in females. The fact that the Crustacean larvae, larvae are reared in this pouch and are not Motility, free-swimming characterises the order. The mysid's head bears a pair of stalked eyes and two pairs of antennae. The thorax consists of eight segments each bearing branching limbs, the whole concealed beneath a protective carapace and the abdomen has six segments and usually further small limbs. Mysids are found throughout the world in both shallow and deep marine waters where they can be Benthos, benthic or pelagic, but they are also important in some fresh water and brackish water, brackish ecosystems. Many benthic species make Diel vertical migration, daily vertical migrations into higher parts of the water column. Mysids are filter feeders, omnivores ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neobirsteiniamysis
''Neobirsteiniamysis'' is a mysid crustacean genus of the subfamily Boreomysinae of the family Mysidae Mysidae is the largest family (biology), family of crustaceans in the order (biology), order Mysida, with over 1000 species in around 170 genera. Characteristics Members of the family Mysidae are distinguished from other mysids by the fact that .... Some of the largest mysids. Exclusively deep water. Cosmopolitan. 2 species. Description The eyes are lacking pigmentation, concave laterally, with the microfibrous microstructures on the concave surface. The telson lateral margins are as wide as or wider than the anterion part of the telson. The statocyst is poorly developed. Taxonomy Type species of the genus is '' Petalophthalmus inermis'' Willemoes-Suhm, 1874. The name comes from the ''neo-'' (Greek ''new'') and ''Birsteiniamysis'' (the unavailable genus-name, replaced by ''Neobirsteiniamysis''). Classification Includes 2 species: *'' Neobirsteiniamysis inermis'' (Wille ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erythrops
''Erythrops'' is a genus of marine crustaceans in the family Mysidae Mysidae is the largest family (biology), family of crustaceans in the order (biology), order Mysida, with over 1000 species in around 170 genera. Characteristics Members of the family Mysidae are distinguished from other mysids by the fact that .... Species There are 17 recognized species: * '' Erythrops abyssorum'' G.O. Sars, 1869 * '' Erythrops africanus'' O. Tattersall, 1955 * '' Erythrops alboranus'' Bacescu, 1989 * '' Erythrops bidentatus'' Nouvel, 1973 * '' Erythrops elegans'' (G.O. Sars, 1863) * '' Erythrops erythrophthalmus'' (Goës, 1864) * '' Erythrops frontieri'' Nouvel, 1974 * '' Erythrops glacialis'' G.O. Sars, 1885 * '' Erythrops microps'' (G.O. Sars, 1864) * '' Erythrops minutus'' Hansen, 1910 * '' Erythrops nanus'' W. Tattersall, 1922 * '' Erythrops neapolitanus'' Colosi, 1929 * '' Erythrops parvus'' Brattegard, 1973 * '' Erythrops peterdohrni'' Bacescu & Schiecke, 1974 * '' Erythrops phuk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemimysis Anomala
The bloody-red mysid, ''Hemimysis anomala'', is a shrimp-like crustacean in the Mysida order, native to the Ponto-Caspian region, which has been spreading across Europe since the 1950s. In 2006, it was discovered to have invaded the North American Great Lakes. Distribution The species is native to freshwater margins of the Black Sea, the Azov Sea and the eastern Caspian Sea. It has historically occurred in the lower reaches of the Don, Danube, Dnieper and Dniester rivers. In Europe, it has recently spread north west, reaching the Baltic Sea in 1992 and the United Kingdom in 2004. The mysid's spread has been facilitated via its deliberate introduction into reservoirs on the Volga and Dnieper rivers in the 1950s and 1960s to serve as fish food. Despite its spread throughout Europe, it is considered to be endangered in some parts of its indigenous range (Ukraine). The species has entered the Great Lakes via the ballast water exchange; it was reported for the first time in 2006 from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
