Chin J Schisto Control ›› 2013, Vol. 25 ›› Issue (5): 503-.

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Molluscicidal effects of nano-silver biological molluscicide and niclosamide

GUANG Xiao-yuan1 | WANG Jiang-jie2 |HE Zong-gui 3 | CHEN Geng-xin3 |DING Lei 2 | DAI Jian-jun3 | YANG Xiao-hong2*   

  1. 1 Department of Chizhou Vocational Technical College|Chizhou 247100|Anhui Province|China;2 Chemistry and Materials Engi? neering of Chizhou University|China;3 Guichi District Station of Schistosomiasis Control| Chizhou City|Anhui Province| China
  • Online:2013-10-28 Published:2013-10-29
  • Contact: YANG Xiao?hong

纳米银复合生物灭螺剂与氯硝柳胺灭螺效果比较

光晓元1|汪江节2|何宗贵3|陈更新3|丁雷2|戴建军3|杨小红2*   

  1. 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
  • 通讯作者: 杨小红
  • 作者简介:光晓元| 男| 副教授。研究方向: 植物灭螺
  • 基金资助:
    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)

Abstract: 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/m3 nano?silver biological molluscicide groups,a 2 g/m3 50% niclosamide group,and a natural water(control)group were assigned to the four pools which had 100 Oncomelania hupensis snails and 100 crucian seedlings. The molluscicidal effects and toxicity to the aquatic organisms were observed. Results The snail death rates were 100% and crucian seedling death rates were 6% in the 600 g/m3 nano?silver biological molluscicide group and 300 g/m3 nano? silver biological molluscicide group in 7 days and 14 days. The snail death rate was 100% in the niclosamide group in 7 days,and the crucian seedling death rate was 100% in the niclosamide 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 molluscicide possesses an excellent molluscicidal capability and non?toxicity to the other aquatic organ? isms. Therefore,it may become a new,efficient and environment?friendly bio?molluscicide for extensive application.

Key words: Nano?silver biological molluscicide, 50% niclosamide, Molluscicidal effect, Toxicity to fish

摘要: 目的 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 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 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 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。

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

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