Developing the biotech method for effective reproduction of valuable fish species populations

Artificial reproduction of sturgeons and salmonids has shortcomings resulting in a return of commercially raised breeders. These disadvantages primarily are the catch of Atlantic salmon producers in spawning beds, which causes detriment of natural reproduction, and low survival rate of farmed juveniles in nature. In order to increase the efficiency of commercial fish reproduction, we suggest the new methods which are based on fish-specific adaptations during marine feeding period, providing the greatest population productivity and survival. Our objective was the development of a biotechnology for effective farm reproduction of salmon Salmo salar (Linne, 1758) and sturgeon Acipenser stellatus (Pallas, 1771). First, three main effects have been experimentally established for commercial fish culture in brackish seawater close to critical salinity (4-8 ‰): the highest survival rate, prolongation of high reproductive quality of breeders, and acceleration of juvenile development and growth...