Some reproduction properties of Crayfish (Astacus leptodactylus Eschscholtz, 1823) in Demirkopru Dam Lake

In this study, the fecundity, egg diameter and weight of freshwater crayfish in Demirkopru Dam Lake were investigated. It was identified that fecundity 137 relative fecundity 5, average egg diameter-weight 2.72 mm-0.015 g(-1), result of investigation on 92 female with egg. The total length-fecundity and weight-fecundity relationships were deduced as; logF= -6.7999+4.4934 logL and logF= -0.1809+1.6145 logW, respectively. This show that the fecundity is affected much more by total weight than that of length. It is found that the fecundity of female individuals having a total length between 72.8-123.9 mm ranges from 6 to 286.