硫酸铜和高锰酸钾对淇河鲫仔鱼的急性毒性研究

目的]研究药物对淇河鲫仔鱼的急性毒性。方法]在室内常温、静水条件下，以淇河鲫仔鱼为受试生物，以致死率为指标，研究了硫酸铜和高锰酸钾对淇河鲫仔鱼的急性毒性。结果]：①在同一暴露时间，随着硫酸铜和高锰酸钾溶液浓度的增大，淇河鲫仔鱼的死亡率逐渐上升；②硫酸铜24、48和96h的半致死浓度（LC50）分别为3．8、2．5、1．6mg／L，安全浓度（SC）为0．16mg／L；高锰酸钾24、48和96h的半致死浓度（LC50）分别为5．14、3．95、3．04mg/L，安全浓度（SC）为0．304mg／L；③根据实验结果，建议在淇河鲫仔鱼疾病防治中，硫酸铜和高锰酸钾都应慎用或者适当降低使用浓度。

Study on the Acute Toxicity of Bluestone and Potassium Permanganate to the Larva of Carassius auratus in Qihe River

Objective] The research aimed to study the acute toxicity of medication to the larva of Carassius auratus in Qihe River Method] Under room temperature and hydrostatic conditions,using the larva of Carassius auratus as test biology and mortality rate as an index,the acute toxicity of bluestone and potassium permanganate to the larva of Carassius auratus in Qihe River was studied.Result] At the same exposure time,the mortality rate of larva of Carassius auratus in Qihe River increased with the increasing of bluestone and potassium permanganate concentration.The semi-lethal concentration(LC50) of bluestone to larva of Carassius auratus in Qihe River at 24 h,48 h and 96 h were 3.8,2.5 and 1.6 mg/L resp.and its safe concentration(SC) was 0.16 mg/L.The semi-lethal concentration(LC50) of potassium permanganate to larva of Carassius auratus in Qihe River at 24 h,48 h and 96 h were 5.14,3.95,3.04 mg/L resp and its safe concentration(SC) was 0.304 mg/L.According to the experimental results,the prevention and treatment of diseases with bluestone and potassium permanganate to larva of Carassius auratus in Qihe River would be used cautiously,or their concentrations should be decreased.