RESULTS OF RUSSIAN STURGEON FRY GROWTH UNDER ARI LOWER VOLGA

Abstract

At sturgeon fish-breeding plants on the captive breeding in the Astrakhan region at cultivation of young fishin ponds a negative factor is contamination their listonogy crayfish (leptesteriya and shchitn) which oppress development of valuable fodder organisms in nursery reservoirs. The applied a chloric method of fight against listonogy crayfish has an essential shortcoming - lime chloride negatively influences on body height and development of the main valuable objects of a delivery of the sturgeon. The offered intensifikatsionny actions based on non-chlorine processing of nursery ponds allow to improve their food supply and to raise a ryboproduktivnost of reservoirs.