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Hydrobiological Journal

ISSN for PRINT: 0018-8166

Institutional price:	$1994.00
Issues per year:	6

Best Paper Award Selection - Editorial Board Site

2006, Volume42

126 pages

Issue price - $398.00

Peculiarities of Natural Reproduction of Fishes and Food Resources in an Unregulated Section of the Volga River

M. P. Boytsov
The Upper Volga Branch of the State Research Institute of Lacustrine Fish Industry, Konakovo, Russia

S. V. Sentihcheva
The Upper Volga Branch of the State Research Institute of Lacustrine Fish Industry, Konakovo, Russia

ABSTRACT

It has been shown that under conditions of high flowage, prevalence of sandy-pebble bottom grounds and weak overgrowth, which are peculiar of unregulated sections of the Volga River, the areas for spawning of phytophilous fishes are rather limited. Especially low was natural reproduction of bream. Efficiency of fish spawning depended on hydro-meteorological conditions of a year. It is emphasized that a level of development of planktonic and benthic fauna under conditions existed in the river is extremely low.