四种渔药对稀有鮈鲫的急性毒性.pdfVIP

40 3 2010 5 Vol40 No3 Freshwater Fisheries M ay 2010 1, 2 1 2 曹 岩 , 朱邦科 , 王剑伟 ( 1华中农业大学水产学院, 武汉 430070; 2中国科学院水生生物研究所, 武汉 430072) : , ( 04% )( 20% )( 45% ) ( 20% ) (Gobiocypris rarus) 244872 h 96 h , , 96 h 7012422937 460 g/L, 070242094 4600 g /L, 4 : : : (Gobiocyp ris rarus); ; ; ; ; : S94191 : A : 2010) Acute toxicity of four comm on aquacultural drugs on Gob iocyp r is rarus 1, 2 1 2 CAO Yan , ZHU angke, WANG Jianwei ( 1College of Fisheries, Huazhong Agricultural University, Wuhan 430070; 2Institute of Hydrobiology, Chinese Acade y of Sciences, Wuhan 430072) Abstract: The acute tox icity effects of 4 kinds of drugs ( ivermectin solution, phoxmi , cypermethrin and purifiedmalathi on solution) on Gobiocyp ris rarus w ere studied in controlled condition temperature. The death countw as recorded and the safe massconcentration w as estmi ated respectively after 24, 48, 72 and 96 h. The results showed that 96 h LC w ere 50 701, 2422, 937 and 460 g/L, respectively. The safety concentrations of the 4 drugsw ere 070, 242, 094 and 4600 g/L, respectively. Among these four drugs, the toxicity of ivermectin solution is the highest, follow ed by cyper nethrin, phoxmi , and purifiedmalathion solution. The study show ed Grarus could be used in toxicity test of aquacultural drugs in the future. K ey words: Gobiocyp ris rarus; acute toxicity; ivermectin solution; phox mi ; cypermethrin; puri