The state of natural reproduction of stellate sturgeon Acipenser stellatus in the Lower Volga |
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Authors: | P. V. Veshchev |
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Affiliation: | 1. Caspian Fisheries Research Institute — CaspNIRKh, Astrakhan, Russia
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Abstract: | Data obtained during 1979–2005 on the natural reproduction of stellate sturgeon Acipenser stellatus and water level in the Volga River were analyzed. The relationship between the number of stellate sturgeon larvae migrating down the river, flow quantity during the summer period of low water and the number of spawners entering spawning grounds was shown. Fish productivity of spawning grounds located in the river channel in different zones of the Lower Volga was estimated. Recommendations are presented concerning the increase in the level of stellate sturgeon natural reproduction in the lower pool of the Volgograd hydrosystem. |
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