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To identify a simple tool for quick evaluation of quality of endangered Caspian brown trout, Salmo trutta caspius eggs, the changes of pH (both in ovarian fluid and fertilization water), turbidity (both in ovarian fluid and fertilization water), fertilization and eyeing rates were investigated in ovarian fluid samples containing perfect eggs as well as different concentrations of broken eggs. The pH of ovarian fluid and water as well as fertilization and eyeing rates decreased significantly (P<0.05) with increasing of broken eggs in ovarian fluid. In contrast, the turbidity of ovarian fluid and water as well as mortality rate of eggs increased significantly (P<0.05) with increasing of broken eggs in ovarian fluid. Also, significant correlations (P<0.01) were found between measured parameters as follow: pH of ovarian fluid vs. pH of water and fertilization and eyeing rates; turbidity of ovarian fluid vs. turbidity of water; turbidity of ovarian fluid and water vs. fertilization and eyeing rates. Our results conclude that pH and turbidity of ovarian fluid and water effectively influence on efficiency of artificial propagation. Therefore, these could be used as two simple tools for quick evaluation of quality of Caspian brown trout eggs during artificial reproduction in the hatchery

international journal of biology/internationa journal of biology

Broken Eggs Influence on Fertilization Capacity and Viability of Eggs, Turbidity and pH of Ovarian Fluid and Fertilization Water in the Endangered Caspian Brown Trout, Salmo Trutta Caspius