3种渔药对血鹦鹉鱼苗的急性毒性效应

Acute Toxicity of Three Kinds of Drugs on Blood Parrot Fry

为探明高锰酸钾、二氧化氯和大蒜素3种常用渔药对血鹦鹉鱼的毒性,进行了3种渔药对血鹦鹉鱼苗的急性毒性试验。结果表明:高锰酸钾对血鹦鹉鱼苗24h,48h,72h和96h的半致死浓度(LC50)值分别为2.92mg/L、2.59mg/L、2.28mg/L和1.83mg/L,二氧化氯的LC50值分别为9.07mg/L、7.19mg/L、6.20mg/L和4.81mg/L,大蒜素的LC50值分别为13.56mg/L、7.08mg/L、4.41mg/L和3.51mg/L。高锰酸钾、二氧化氯和大蒜素对血鹦鹉鱼苗的安全浓度分别为0.183mg/L、0.481mg/L和0.351mg/L。血鹦鹉鱼苗对3种药物的敏感性为高锰酸钾>大蒜素>二氧化氯。

The acute toxicity of three kinds of aquacultural drugs,including potassium permanganate （KMnO4 ）,chlorine dioxide（ClO2 ）and allicin,on blood parrot fry were studied.The results showed that the 24 h,48 h,72 h and 96 h LC50 of potassium permanganate on blood parrot fry were respectively 2.92 mg/L,2.59 mg/L,2.28 mg/L and 1.83 mg/L,which of chlorine dioxide（ClO2 ）were respectively 9.07 mg/L,7.19 mg/L,6.20 mg/L and 4.81 mg/L;and for allicin they were respectively 13.56 mg/L,7.08 mg/L,4.41 mg/L and 3.51 mg/L.The safe concentration of the three drugs was 0.183mg/L,0.481 mg/L and 0.351 mg/L,respectively.This suggested that susceptibility of blood parrot fry to the three drugs was as follows：potassium permanganate 〉 allicin 〉 chlorine dioxide（ClO2 ）.