عنوان مقاله [English]
In this research, the effect of Polyaromatic hydrocarbons (PAHs) on blood parameters of Acipenser nudiventris was studied. Number of 2000 fingerling from Acipenser nudiventris was applied with weighing 11±3 g which was collected sturgeon farms in Golestan, Gilan and mazandaran states. All fish samples were transported to the Caspan Sea Ecology Research Center. The LC50 (96 hr) was obtained 13.9 mg/l for Acipenser nudiventris.Results showed that RBC and HB were significantly lower in test groups than the control fish. However, level of MCV and PCV in test groups was higher than control groups (P<0.05). The chronic effect of PAHs was assessed. Chronic exposure was 2, 3 and 4 folds PAHs concentration in water sample in the southern of Caspian Sea. Fish samples were treated under stable condition during 50 days at 22±1 ºC. The results showed that the Red blood cell and hematocrit levels of young fish exposed to TPAH were significantly decreased (P˃0.05) compared to the control group.In a conclusion, the presence of poisons and chemicals in water cause injury and weaken the immune system of sturgeons and thus cause disease and finally bring about death.