Omidvar, Zeinab

[ 1 ] - Investigation electivity of live food sturgeon fry of Persian sturgeon (Acipenser persicus) in earth ponds of Marjani center of Gorgan

This study whitin fourty days of rearing in four earthern ponds in the spring of 2013 and in the six treatments were carried out. For this purpose, sampled from zooplankton and benthose in the earthern ponds and stomach contents of the 240 fry. The abundance of prey items in the stomach and the environment was investigated to determine the electivity index for each prey item. The electivity val...