The Embryonic Development of Black Sea Turbot (Psetta maxima Linnaeus, 1758) Eggs in Different Incubation Temperatures and Salinities

Özet

In this research, the effects of different temperatures (8, 10, 12, 14, 16 and 18°C) and salinities (5, 10, 15, 18, 20, 25, 30,35 and ‰40) on the development of turbot (Psetta maxima) eggs were investigated in triplicates. Broodstock produced inCFRI were used in this research. Fertilization, hatching, anomaly rate and larvae length were measured. Time dependentembryonic development were observed.Embryonic development was completed in each temperatures. It is observed that water temperature has significanteffects on fertilization, hatching, anomaly and larvae length (P<0.05). Regression analysis showed that there was a negativecorrelation between the embryonic development and the water temperature of incubation. Time for hatching at 8 and 18°Cwere 2552 hour/degree and 1350 hour/degree, respectively. Better fertilization rate were obtained in salinities of ‰18, ‰20and ‰25, respectively. Fertilization was not succeeded in the salinity values of 5‰ and ‰10. The anomaly rate in the salinityvalues of 15‰ and 40‰ was higher then in accordance with other salinity values.According to result of this study, to get high fertilization and haching rate and low abnormality for Black Sea Turbot,water temperature and water salinity were found as 14°C and ‰18, respectively.