黏菌素E杀灭钉螺效果的初步研究  

Preliminary investigation on molluscicidal effects of colistin E

作　　者：余传信[1] 殷旭仁[1] 许永良[1] 杨小红[1] 朱荫昌[1] 

机构地区：[1]江苏省血吸虫病防治研究所,无锡214064

出　　处：《中国血吸虫病防治杂志》2005年第6期421-423,共3页Chinese Journal of Schistosomiasis Control

基　　金：江苏省卫生厅"135工程"医学重点人才基金(RC2002069)

摘　　要：目的观察黏菌素E对钉螺的杀灭效果。方法采用室内浸杀法、喷洒法观察黏菌素E 对湖北钉螺的杀螺效果,通过鱼毒试验观察黏菌素E对鱼的毒性作用。结果药物浓度为5．0、1．0 g／L时,分别浸杀24、48 h和72 h,各组钉螺的死亡率均为100％;药物浓度为0．5 g／L时,浸杀24、 48 h和72 h,钉螺死亡率分别为95．00％、100．00％和100．00％;药物浓度为0．1 g／L时,浸杀24、48 h和72 h,钉螺死亡率分别为90．00％、95．00％和100．00％;药物浓度为0．01 g／L,浸杀24、48 h和 72 h,钉螺死亡率分别为70．00％、86．00％和100．00％。分别用35、70、140 mg／m2黏菌素E进行喷洒灭螺,钉螺死亡率分别为60．00％、100．00％和100．00％。鱼毒试验显示黏菌素E对鱼的毒性为弱毒性。结论黏菌素E是一种有效的灭螺药物,有进一步研究的价值。Objective To evaluate the molluscicidal effect of colistin E on Oncomelania hupensis. Methods The molluscicidal effect of colistin E on O. hupensis was checked by using the immersion method and spraying method. The toxicity of colistin E on fish was observed by using the toxic test. Results The snail mortality of each group was 100% when the snails were immersed in the colistin E solutions at a concentration of 5.0, 1.0 g/L for 24, 48 h and 72 h separately. When the snails were immersed in the colistin E solution at a concentration of 0.5 g/L for 24, 48 h and 72 h, the death rates were 95%, 100% and 100% respectively; when the snails were immersed in the colistin E solution at a concentration of 0.1 g/L for 24, 48 h and 72 h, the mortality was 90%, 95% and 100% respectively; when the snails were immersed in the colistin E solution at a concentration of 0.01 g/L for 24, 48 h and 72 h, the mortality was 70%, 86% and 100% respectively. The snail mortality by the spraying method in a dose of 35, 70, 140 mg/m^2 of colistin E was 60%, 100% and 100%. The result of toxic test showed that the toxicity of colistin E on fish was low. Conclusion Colistin E is an effective molluscicide, and is worthy of investigation further.

关 键 词：黏菌素E 杀螺效果 钉螺 

分 类 号：R383.24[医药卫生—医学寄生虫学]