| Abstract: | Objective] This study was conducted to evaluate the ecotoxicity of boscalid to adult zebrafish (Danio rerio).Method] The activities of antioxidant enzymes superoxide dismutase (SOD),catalase (CAT),peroxidase (POD),glutathione peroxidase (GPx),as well as a non-enzymatic antioxidant malondialdehyde (MDA),in the liver were measured 3,7,14 and 21 d post exposure (dpe) to 0.02 (1/100 of acute toxicity),0.036 (monitored concentration),0.08 (1/20 of acute toxicity),0.16 (1/10 of acute toxicity) and 0.32 mg/L (1/5 of acute toxicity) boscalid using a semi-static method.Result] SOD,CAT,POD,GPx and MDA activity in the liver of zebrafish varied with boscalid concentration and exposure time.Boscalid significantly enhanced MDA content at 21 dpe.A significant upregulation of the activity of SOD,CAT,POD and GPx at 7 dpe was observed,suggesting that boscalid resulted in oxidative stress and lipid peroxidation.Conclusion] These results show that these biomarkers are all appropriate for monitoring oxidative stress and the lipid peroxidation status of fish after exposure to boscalid. |
