Biotechnological methods of thorn reproduction for replanishment natural populations

In conditions of full extinction of a thorn on a greater part of historical areal the question of formation productive herds and development of biogeotechnology for reproduction of a kind in basins of the south seas of Russia is ac-tual. Research on cultivation of a thorn in regulated conditions of aquatic environment has revealed good adaptation power to artificial conditions, an intensive gain of mass and the accelerated development of reproductive system. Creation and exploitation of reproductive herds will allow to preserve a gene pool of this valuable representative of sturgeon fishes, to raise efficiency of artificial reproduction, reacclimatize a kind in the lost parts of an areal.