The survival,growth and reproduction situation of amphipods from the Caspian Sea basin in vitro

In order to increase of the natural products in fish farms, the survival, growth and reproduction status of many amphipod species were investigated in vitro. Seven amphipods were studied including Gammaruskomareki, Pontogammarusmaeoticus, Pontogammarusborceae, Gammarusparicrenatus, Gammaruslacustris, Obesogammarusacuminatus and Gammarusaequicauda. These species were collected from 8 locations in the Caspian Sea basin; two points in the southern Caspian Sea shore, Anzali Wetland, Miankaleh Gulf, Gorigol Wetland, Neor Lake, two springs in Hiran and Kojor regions. 150 individuals of each species were kept and similarly fed in aquariums with three replicates. The final population, length frequency and reproduction situation were studied after 100-150 days. The highest number of individuals, juvenile and the vigorous females were observed in P. maeoticus, P. borceae and Obesogammarusacuminatus. These species seems to be good candidate to use in fish farm ponds that the additional studies are also necessary.