Dikerogammarus caspius (Pallas) in the Volgograd Reservoir

摘要

Data on the distribution, quantitative population parameters, and biotopic preferences of the Caspian amphipod Dikerogammarus caspius (Pallas, 1771) in the Volgograd Reservoir are presented. The routes of migration of Caspian amphipods species via rivers of the Ponto-Caspian Basin have provoked arguments and interest among researchers since the start of studies on this aspect of the bottoni fauna of the Volga River (Belkemishev, 1923; Derzhavin, 1923; Mordukhai-Boltovskoi, 1967).