Изучение зависимости плодовитости русского осетра от морфометрических показателей

The results of the research of the Russian sturgeon fecundity in dependence on morphometric figures: weight and length of body, age of fish are shown. The individual fluctuations of absolute fecundity in different age groups or different denominate classes of sturgeons are immensely large. The highest coefficient of variation and therefore, the fecundity fluctuation are observed for fish of length 161–190 cm and weight 7–10 kg. The reproductive ability of Russian sturgeon mainly depends on fecundity, especially on population and individual absolute one. Individuals with high growth rate have bigger fecundity. Russian sturgeon females with similar length and weight don’t have the increasing of fecundity at age. Individual absolute fecundity of the females at the same age is increased together with growing of length and weight. More than that, it is revealed, that population fecundity decreased during last years.