The content of microelements in the Acipenser stellatus Pallas early development stages under artificial and natural reproduction conditions

Abstract

The microelements content in the main components of water ecosystems as well as in the ripening fish eggs, fish larvae and fish fry at natural spawning ground and at fish farm was studied. The deficiency of Mn and Co in the fish farm ponds and accor-dingly low levels of these elements in the fish larvae and fries of Acipenser stellatus Pallas in comparison with their contents in fish flesh on the redd was noticed.