Efficiency of reproduction, size-age structure and growth pike perch <i>Stizostedion lucioperca </i>in Volzhsk stretch of Kuybyshev water reservoir during itsexistence
Change of trade catch, size-age structure and growth of a pike perch of Volga stretch of Kuybyshev water reservoir for 1956-2005 is considered. During the examined period the tendency of its trade catch falling, since 90th years of the last century, reduction of a share of large fishes of the elder age specimen, worsening of growth. All this negatively affects on condition of pike perch population and demands carrying out of a complex of measures on restoration of its stocks.