Reproductive indicators of cage grown sturgeon producers in conditions of European North

Results of the analysis on biological fish breeding and reproductive indicators of sturgeon producers grown in cages under natural temperature conditions of Karelian waterbodies are considered. The study examined the following indices of sturgeon producers: the length and the weight of the fish, its relative and working fecundity, the weight of ovulated eggs, the oocytes size and the weight of mature sturgeon females, the gamete-somatic index and the level of fertilization. Evaluation of the female production qualities revealed high values of all reproductive parameters. The study has shown that conditions of the northern regions are favorable for the growth and development of sturgeon shoals. The results of the study are instrumental in the development of scientifically substantiated enlargement of fish assortment produced in Karelia.