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Pallaseidae
Pallaseidae (from the genus name '' Pallasea'') is a family of amphipod crustaceans endemic to Lake Baikal. Some species are also found in the Angara River which flows out of Lake Baikal, and one species is distributed throughout Northern Palearctic. The composition of the family is a subject of discussion, with different sources listing either 9 genera and 58 species, or 8 genera and 20 species. They are benthic, nectobenthic or epibiotic An epibiont (from the Ancient Greek meaning "living on top of") is an organism that lives on the surface of another living organism, called the basibiont ("living underneath"). The interaction between the two organisms is called epibiosis. An epi .... The following genera are placed in the family Pallaseidae: *'' Babr'' Kamaltynov & Väinölä, 2001 *'' Burchania'' Tachteew, 2000 *'' Hakonboeckia'' Stebbing, 1899 *'' Homalogammarus'' Bazikalova, 1945 *'' Pallasea'' Bate, 1862 *'' Pallaseopsis'' Kamaltynov & Väinölä, 2001 *'' Pentagonurus' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Babr
''Babr'' is a genus of amphipod crustaceans in the family Pallaseidae, endemic to Lake Baikal. There are 2 species in the genus. Taxonomic history Previously the species of this genus were a part of another Baikalian genus '' Pallasea'', which was recently split into several independent genera, including genus ''Babr''. Distribution and habitat ''Babr'' is endemic to Lake Baikal, inhabiting sandy and sandy-muddy shallows of the lake. Morphology Body length ranges from about . Typical dark spots and stripes on the body reminded the authors of the genus of a tiger, and the name of the genus is based on an old Siberian name of tiger, "babr". Similar to many other taxa in the family, ''Babr'' species have strongly convex oval eyes and lateral prominences on thoracic segments. In comparison with the closely related genus '' Pallaseopsis'' the representatives of ''Babr'' lack dorso-lateral spines, have longer telson The telson () is the posterior-most division of the body of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pallasea
''Pallasea'' is a genus of ''Pallaseidae Pallaseidae (from the genus name '' Pallasea'') is a family of amphipod crustaceans endemic to Lake Baikal. Some species are also found in the Angara River which flows out of Lake Baikal, and one species is distributed throughout Northern Palearc ...''. The genus was described in 1862 by C. S. Bate. The species from this genus are found in Baikal Lake and in some lakes in Europe. Species: * '' Pallasea angarensis'' Dorogostaisky, 1917 * '' Pallasea cancellus'' (Pallas, 1772) * '' Pallasea gerstfeldtii'' (Dybowsky, 1874) References {{Taxonbar, from=Q10615420 Gammaridea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gammaridea
Gammaridea is one of the suborders of the order Amphipoda, comprising small, shrimp-like crustaceans. Until recently, in a traditional classification, it encompassed about 7,275 (92%) of the 7,900 species of amphipods described by then, in approximately 1,000 genus, genera, divided among around 125 family (biology), families. That concept of Gammaridea included almost all fresh water, freshwater amphipods, while most of the members still were marine. The group is however considered paraphyly, paraphyletic, and is under deconstruction by the amphipod taxonomists Jim Lowry, J. Lowry and A. Myers. In 2003 they moved several families from Gammaridea to join members of the former Caprellidea in a new suborder Corophiidea.A. A. Myers & J. K. Lowry (2003). "A phylogeny and a new classification of the Corophiidea Leach, 1814 (Amphipoda)". Journal of Crustacean Biology 23 (2): 443–485. doi:10.1651/0278-0372 Further, in 2013 another large suborder Senticaudata was established, which n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epibiont
An epibiont (from the Ancient Greek meaning "living on top of") is an organism that lives on the surface of another living organism, called the basibiont ("living underneath"). The interaction between the two organisms is called epibiosis. An epibiont is, by definition, harmless to its host. In this sense, the interaction between the two organisms can be considered neutralistic or commensalistic; as opposed to being, for example, parasitic, in which case one organism benefits at the expense of the other, or mutualistic, in which both organisms obtain some explicit benefit from their coexistence. Examples of common epibionts are barnacles, remoras, and algae, many of which live on the surfaces of larger marine organisms such as whales, sharks, sea turtles, and mangrove trees. Although there is no direct effect of the epibiont to the host, there are often indirect effects resulting from this interaction and change in the surface of the host. This has been found to be especially i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphipod
Amphipoda is an order of malacostracan crustaceans with no carapace and generally with laterally compressed bodies. Amphipods range in size from and are mostly detritivores or scavengers. There are more than 9,900 amphipod species so far described. They are mostly marine animals, but are found in almost all aquatic environments. Some 1,900 species live in fresh water, and the order also includes the terrestrial sandhoppers such as ''Talitrus saltator''. Etymology and names The name ''Amphipoda'' comes, via New Latin ', from the Greek roots 'on both/all sides' and 'foot'. This contrasts with the related Isopoda, which have a single kind of thoracic leg. Particularly among anglers, amphipods are known as ''freshwater shrimp'', ''scuds'', or ''sideswimmers''. Description Anatomy The body of an amphipod is divided into 13 segments, which can be grouped into a head, a thorax and an abdomen. The head is fused to the thorax, and bears two pairs of antennae and one pair of se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
