The effects of acute toxicity of copper on tissue changes of Cyprinus carpio and Rutilus caspicus after ۹۶h

The experiments were conducted to study of acute toxicity of copper on tissue changes of Cyprinus carpio and Rutilus caspicus after ۹۶h. ۱۳ fishes with average weight of ۲±۰.۵g to Rutilus caspicus and ۲۰±۲.۲g Cyprinus carpio were exposed to different concentrations of copper salt respectively. The fish were encountered in lethal concentrations of copper (۰.۴mgL-۱ and ۰.۴۵mgL-۱ to Rutilus caspicus and Cyprinus carpio respectively). A group of fish was considered as control samples. Histopathological findings showed that major lesions were haemorrhage, hyperaemia, hyperplasia and epithelial cells necrosis in total fish. Also, in the lesion fish were observed degenerated tubules of their kidney, expansion of Bowman's capsule and hepatocytes necrosis.

Keywords:

Acute toxicity , Copper , Static Method , Rutilus caspicus , Cyprinus carpio