纳米银复合生物灭螺剂与氯硝柳胺灭螺效果比较  

Molluscicidal effects of nano-silver biological molluscicide and niclosamide

作　　者：光晓元[1] 汪江节[2] 何宗贵 陈更新 丁雷[2] 戴建军 杨小红[2] 

机构地区：[1]池州职业技术学院基础部 [2]池州学院材料与化学工程系 [3]池州市贵池区血防站

出　　处：《中国血吸虫病防治杂志》2013年第5期503-505,共3页Chinese Journal of Schistosomiasis Control

基　　金：国家自然科学基金(21071024);安徽省教育厅自然科学项目(KJ2012B121);池州学院自然科学项目(2011ZR010)

摘　　要：目的观察新型纳米银复合生物灭螺剂野外实地灭螺效果,及其对水生物的毒性影响。方法选择安徽省池州市秋浦河下游河滩为研究现场,挖掘4个1 m3的水池,分别设纳米银复合生物灭螺剂300 g/m3组和600 g/m3组、50%氯硝柳胺乙醇胺盐2 g/m3组、天然水对照组,同时向各水池分别投入100只钉螺、100尾鲫鱼苗。采用浸杀法,定期观察同一环境条件下各组灭螺效果,以及2种不同药物的鱼毒性影响。结果纳米银复合生物灭螺剂600 g/m3组和300 g/m3组钉螺死亡率分别在第7 d和第14 d达到100%,2种剂量的鱼苗死亡率均为6%;氯硝柳胺组在第3 d的鱼苗死亡率为100%,第7 d时钉螺死亡率为100%;对照组第7 d钉螺死亡率为7%,第14 d为14%,鱼苗死亡率为22%。结论新型纳米银复合生物灭螺剂具有良好的灭螺效果,而且对水生动物的生长基本无毒性影响,有望作为一种新型高效环保型生物灭螺剂推广应用。Objective To evaluate the molluscicidal effect of a novel nano-silver biological molluscicide in the field and its toxicity to other aquatic organisms. Methods A marshland of the Qiupu River was selected as the study site. Four 1 m3 pools were excavated. Four groups, including 300 g/m3 and 600 g/ms nano-silver biological molluseicide groups, a 2 g/m3 50% nielosamide group, and a natural water （control） group were assigned to the four pools which had 100 Oncomelania hupensis snails and 100 crucian seedlings. The molluseieidal effects and toxicity to the aquatic organisms were observed. Results The snail death rates were 100% and crueian seedling death rates were 6% in the 600 g/m3 nano-silver biological molluscieide group and 300 g,/m3 nano- silver biological molluscicide group in 7 days and 14 days. The snail death rate was 100% in the nielosamide group in 7 days, and the crueian seedling death rate was 100% in the nielosamide group in 3 days. The snail death rates were 7% and 14% in the con- trol group in 7 and 14 days respectively, and the crucian seedling death rate was 22% in the control group. Conclusions The nov- el nano-silver biological molluseieide possesses an excellent molluscieidal capability and non-toxicity to the other aquatic organ- isms. Therefore, it may become a new, efficient and environment-friendly bio-molluseieide for extensive applicatio,＇..

关 键 词：纳米银复合生物灭螺剂 50%氯硝柳胺 杀螺效果 鱼毒性 

分 类 号：R383.24[医药卫生—医学寄生虫学]