ASSESTMENT OF FEMALE REPRODUCTIVE FUNCTION IN PADDLEFISH (POLYODON SPATHULA) REARED IN POND CONDITIONS IN ASTRAKHAN REGION

The article describes the problems, which are of greatest interest for formation fish broodstock, such as process gameto- and gonadogenesis duration spawning cycles in broodstock reared artificial conditions. Under Research Experimental Aquaculture Complex BIOS CaspNIRKH formed paddlefish 63 females matured 2020. There were studied 11 born 2002 2003, whose roe was taken food purposes. following parameters determined: age sexual maturity, interval, body weight, ratio eggs to weight. physiological state upon obtaining assessed by biochemical blood: hemoglobin concentration (Hb) total serum protein (TSP). reproductive function obtained research lower than characteristic their natural habitat, first acclimatizers Krasnodar region. Sexual maturity came quite late - at 14-15, is 1-2 years more conditions intervals turned out be longer female weight about 10%, 1.5 times less that observed American At same time, blood (hemoglobin protein, characterize females) rather high indicated a satisfactory condition fish. preliminary results make it possible recommend farmers enterprise improve work with paying special attention optimizing rearing stages gonad formation.