EFFECT OF GROWING CONDITIONS IN PONDS ON THE VIABILITY OF YOUNG ANADROMOUS STURGEONS RESILIENCE

Abstract

The analysis of our own multi-year data obtained as a result of monitoring studies at fishbreeding farms in the Azov Sea basin has shown reclamation works that had been carried out not to the fullest extent affect the productivity of nursery habitat and hence the conditions of juveniles rearing in ponds. We have considered changes in the feeding regime formation, as well as the influence of rearing conditions on the growth rate of juveniles and their viability at the stage of their release into natural waterbasins. The work describes and summarizes the results of the experiments conducted to determine the quality of juveniles, i.e. we have tested the fish for thermoresistance and salt tolerance. The stability of sturgeon fingerlings to stress factors is shown to decrease with lengthened periods of holding the fish under unfavorable conditions.