INFLUENCE OF BESTER ACIPENSER NIKOLJUKINI REARING TEMPERATURES ON GAMETOGENESIS DURATION AND FIRST SEX MATURATION IN WATER RECIRCULATINGAQUACULTURE SYSTEMS AND PONDS
The catastrophic status of sturgeon stocks in natural waters during the recent decades has been partially compensated by sturgeon farming, highly developed in many countries. Under severe climatic conditions of Russia the most perspective trends are shown to be sturgeon cultivation in heated waters of electric power stations, as well as in fish farms using energy-saving water recirculating aquaculture sys- tems which make it possible to create the most favorable conditions for sturgeon growth and matura- tion. Some results of the influence of cultivation conditions of two bester breeds on time frames of first maturation and duration of separate phases of gametogenesis are given. 3 tabl., 8 ill., 27 bibliog.