the study on some blood ionic and metabolic parameters in maturated and immature female’s kutum (rutilus frisii kutum) migrated to sefid-rud estuary

this research was conducted in sefid-rud river of southern caspian sea and amounts of ionic (sodium, potassium, magnesium and calcium) and metabolic (cholesterol, total protein and glucose) parameters in 35 maturated and 45 immature female kutum blood determined. fish samples were collected monthly from march to may in 2008. blood samples were taken from the caudal vessels. no abnormalities or pathological changes in the ovarian or body of the investigated fish were detected. the results showed that sodium, potassium, calcium and magnesium were maximum to minimum respectively and concentration of cholesterol was more than glucose and glucose was more than total protein in serum blood. there was a significant correlation between calcium and total protein in maturated (4.24±0.05 mmol/l, 3.04±1.96 mg/dl) and immature specimen (8.02±0.14 mmol/l, 4.11±1.87 mg/dl) (p<0.05). the differentiation between glucose with cholesterol in maturated (87.73±56.29 mg/dl, 475.29±64.16 mg/dl) and immature specimen (45.04±21.09 mg/dl, 347.26±95.12 mg/dl) was significant (p<0.05). according to influence of ionic and nonionic blood’s plasma on regulation of reproduction and growth in kutum, can use in management of reproduction and culture of this valuable species.