五种常用药物对江黄颡鱼幼鱼的毒性试验  

Identifying toxicity of five commonly used drugs on Pseudobagrus vachelli fry

作　　者：于丹[1] 黄凯[1] 林岗[2] 张盛[3] 

机构地区：[1]广西大学动物科学技术学院,南宁530005 [2]南宁科嘉养殖实验场,南宁530031 [3]广西水产试验场,南宁530031

出　　处：《广西农业科学》2010年第3期270-272,共3页Guangxi Agricultural Sciences

基　　金：广西科技攻关项目(桂科攻0537008-2A)

摘　　要：在pH7.6、溶氧为5mg/L以上、21～26℃的静水条件下,采用生物毒性试验方法进行高锰酸钾、福尔马林、食盐、硫酸铜、敌百虫等5种常用药物对江黄颡鱼幼鱼的急性毒性试验。结果显示,各药物的24h LC50、48h LC50、SC分别为:高锰酸钾5.49、5.18、1.39mg/L;福尔马林63.15、59.54、15.95mg/L;食盐9436、8945、2418mg/L;硫酸铜1.87、1.81、0.51mg/L;敌百虫5.74、5.00、1.14mg/L。依据各药物对江黄颡鱼幼鱼48h LC50依大小排列,其毒性大小依次为:硫酸铜>敌百虫>高锰酸钾>福尔马林>食盐;各药物对江黄颡鱼幼鱼SC大小依次为:硫酸铜<敌百虫<高锰酸钾<福尔马林<食盐。The toxic effects of five commonly used drugs to Pseudobagrus vachelli fry was tested in plastic basin having 21-26℃ water temperature, 7.6 pH and over 5 mg/L of dissolved oxygen. Different concentrations of five drugs, viz., potassium permanganate, formalin, salt, copper sulfate, and dipterex were used using bio-toxicity method. The median lethal concentration（LC50）at 24 and 48 h and the safe concentration （SC） were found as follows： 5.49, 5.18, and 1.39 mg/L for potassium permanganate; 63.15, 59.54, and 15.95 mg/L for formalin, 9436, 8945, and 2418 mg/L for salt; 1.87, 1.81, and 0.51 mg/L for copper sulfate; 5.74, 5.00, and 1.14 mg/L for dipterex. According to the effects of LC50 of drugs on Pseudobagrus vachelli fry at 48 h, the descending order of drug toxicity observed is as follows： copper sulfate〉dipterex〉potassium permanganate〉formalin〉sah; and the order of safe concentration of different drugs on Pseudobagrus vachelli fry was： copper sulfate〈diptercx〈potassium permanganate〈formalin〈salt.

关 键 词：江黄颡鱼 毒性试验 半致死浓度 安全浓度 

分 类 号：S965.199[农业科学—水产养殖]