Efficiency of Natural Reproduction of Sturgeons in the Lower Volga under Current Conditions

被引：18

作者：

Veshchev, P. V. ^{[1
]}

Guteneva, G. I. ^{[1
]}

Mukhanova, R. S. ^{[1
]}

机构：

[1] Caspian Fisheries Res Inst, Astrakhan 414056, Russia

来源：

RUSSIAN JOURNAL OF ECOLOGY | 2012年 / 43卷 / 02期

关键词：

natural reproduction; flow volume; sturgeons; larvae; spawners; productivity;

D O I：

10.1134/S1067413612020154

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

The results are presented that have been obtained during long-term studies (1991-2009) on the efficiency of natural reproduction of the beluga, Russian sturgeon, stellate sturgeon, and sterlet in different spawning zones of the Volga. The influence of major environmental factors on the formation of the offspring of these fishes is analyzed. It is shown that the productivity of Volga spawning grounds varies depending on the river flow volume during spring floods and the abundance of active spawners. Practical recommendations are proposed for enhancing sturgeon reproduction in the Volga.

引用

页码：142 / 147

页数：6

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