Caspian Sea amphipods: biodiversity,systematic position and ecological peculiarities of some species |
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| Authors: | Galina M. Pjatakova Anatolyi G. Tarasov |
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| Affiliation: | (1) Russian Federal Research Institute of Fisheries and Oceanography, 17, V. Krasnoselskaya st., 107140 Moscow, Russia;(2) Institute of Geography of RAS, 29 Staromonetnyi per., 109017 Moscow, Russia;(3) Department of Fisheries, Astrakhan State Technical University, 16 Tatisheva st., 414025 Astrakhan, Russia |
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| Abstract: | ![]()
In the Caspian Sea, one group of crustaceans, the Amphipoda, is represented by 72(70?) species, 60(58?) of which are gammarids, arranged in 20 genera. Almost all are endemic to the Ponto-Caspian zoogeographical region. To simplify the taxonomy of the genusGammarus Fabricius s.l., the Caspian gammarids ought to be grouped in 4 genera:Dikerogammarus Stebbing,Pontogammarus Sowinsky,Stenogammarus Martynov, andChaetogammarus Martynov. Taking into account the influence of different ecological factors on the external morphology of gammarids, we consider that all described forms ofDikerogammarus haemobaphes (Eichwald),D. villosus (Sowinsky),D. palmatus Martynov,D. fluviatilus Martynov, and perhapsD. aralensis (Uljanin) are one species —D. haemobaphes. Study of the ecological area and distribution ofIphigenella andrusovi Sars,Pandorites podoceroides (Grimm) andChaetogammarus placidus Sars indicates that these species are endemic to the Caspian Sea. |
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| Keywords: | amphipods biodiversity brackish waters Caspian Sea Ponto-Caspian saline lake |
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