Abstract

The mutual action between a toxicant and a biological system can be calculated using hematological, biochemical biomarkers. The immunological, hematological and biochemical indices of silver carp (Hypophthalmichthys molitrix ) were investigated under low (10%LC50) and high (50%LC50) concentrations of mercury chloride for 96h. In both concentrations Ht, Hb, RBC, lymphocyte were significantly (p<0/05, p<0/01) lower than controls group whereas MCH, MCHC, WBC, Glucose, neutrophil, eosinophil were significantly (p<0/05, p<0/01) larger contrasted to the respective controls group. In low and high concentrations MCV, cortisols respectively were lower than control group. A significant decrease in high concentrations in cortisol level may be as cortisol suppression due to high stresses. The consequential discoveries of this study are that mercury chloride concentrations (low and high) may cause some substitutions in the hematological, biochemical and immunological parameters of the studied fish, so estimation of these indices, could supply a useful indicator of mercury chloride of water bodies. It appears that MCH, eosinophil in low concentrations and lymphocyte in high concentrations is appropriate biomarkers of mercury chloride in silver carp .

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