阿维菌素等三种常规渔药对卡拉白鱼的急性毒性

采用半静态法,研究了三种常规渔药阿维菌素、三氯异氰脲酸和硫酸铜对卡拉白鱼(Chalcalburnus chal coides aralensis)急性毒性效应。结果表明:阿维菌素对卡拉白鱼24、48、72、96 h的半致死浓度分别为6.25、4.66、3.66和2.82 mg/L,安全浓度为0.77 mg/L;三氯异氰尿酸对卡拉白鱼24、48、72、96 h的半致死浓度分别为3.22、2.49、2.19、1.79 mg/L,安全浓度为0.45 mg/L;硫酸铜对卡拉白鱼24、48、72、96 h的半致死浓度分别为5.56、3.96、2.03、1.74 mg/L,安全浓度为0.6 mg/L。三种药物对卡拉白鱼毒性高低依次为:硫酸铜三氯异氯尿酸阿维菌素。三种常规渔药的安全浓度近于或高于生产中常用泼洒浓度,可放心使用。

Acute Toxicity of Three Pesticides to Chalcalburnus chalcoides aralensis

The acute toxicity of abamectin、trichloroisocyanuric acid and copper sulfate to Chalcalburnus chalcoides aralensis was studied with the semi-satatic test method.The results showed that the median-lethal concentration of abamectin at 24、48、72 and 96 h was 6.25、4.66、3.66、2.82 mg/L respectively,the safe concentration was 0.77 mg/L;the median-lethal concentration of trichloroisocyanuric acid at 24、48、72 and 96 h was 3.22、2.49、2.19、1.79 mg/L respectively, the safe concentration was 0.45 mg/L;the median-lethal concentration of copper sulfate at 24、48、72 and 96 h was 5.56、3.96、2.03、1.74 mg/L respectively,the safe concentration was 0.6 mg/L.The toxicity of the above-mentioned three drugs in sequence was copper sulfate > trichloroisocyanuric acid > abamectin.