Methods:DNA adducts in gill of wild crucian from Wenjiayan,Lan River and Qu River in Qiantang valley were detected and compared with those from Chunan Qiandao lake(control).

• 方法:以淳安千岛湖作为对照点,以钱塘江水系中闻家堰、兰江和衢江段为调查区,对各个采样点野生鲫鱼鳃DNA加合物水平进行测定。