Department of Zoology, Tilak Dhari College, Jaunpur 222002, India.
Environ Toxicol Pharmacol. 2008 May;25(3):342-50. doi: 10.1016/j.etap.2007.11.003. Epub 2007 Nov 22.
The investigation was done to monitor the total hexachlorocyclohexane (∑HCH) and total dichlorodiphenyltrichloroethane (∑DDT), aldrin, endosulfan and chlorpyrifos in liver, brain and ovary, gonadosomatic index (GSI) and plasma levels of testosterone (T) and estradiol-17β (E2) during breeding season of captured catfishes and carps from the unpolluted ponds of Gujartal, Jaunpur (reference site) and polluted rivers Gomti, Jaunpur and Ganga, Varanasi. Results have indicated that catfishes have higher bioaccumulation of pesticides than the carps, which was beyond the permissible limits for ∑HCH whereas ∑DDT only by catfishes of polluted rivers. The GSI and plasma levels of T and E2 were lowered in the fishes captured from the polluted rivers. In conclusion, the fishes from river Gomti and Ganga showed a high degree of contamination and disrupted reproductive axis when compared to those from the reference site reflecting the degree of pesticide pollution present in those water bodies.
本研究旨在监测未受污染的瓜贾塔尔池塘、贾恩布尔（参照点）捕获的鲶鱼和鲤鱼的肝、脑和卵巢中总六氯环己烷（∑HCH）和总滴滴涕（∑DDT）、艾氏剂、硫丹以及氯吡硫磷的含量，以及繁殖季节血浆中睾酮（T）和雌二醇-17β（E2）的水平。结果表明，与鲤鱼相比，鲶鱼对农药的生物蓄积量更高，超出了∑HCH 的允许限量，而∑DDT 仅在受污染河流中的鲶鱼体内存在。来自受污染河流的鱼类的性体指数（GSI）和 T 和 E2 的血浆水平降低。总之，与参照点相比，来自戈姆蒂河和恒河的鱼类显示出高度的污染程度，并扰乱了生殖轴，反映了这些水体中存在的农药污染程度。
