摘要
目的观察新型灭螺药氯代水杨胺在云南省山区的灭螺效果。方法采用浸杀法将10%氯代水杨胺可湿性粉剂(LDS)配制成0.1、0.2、0.4、0.6、0.8mg/L溶液,同时设50%氯硝柳胺乙醇胺盐可湿性粉剂(WPN)2mg/L和清水对照组,观察两种药物实验室和现场浸杀24、48、72h的灭螺效果。10%LDS剂量0.2、0.4、0.6、0.8、1.0g/m2,同时设50%WPN2g/m2和清水对照组,观察两种药物实验室和现场喷洒及撒粉1、3、7d的灭螺效果。结果室内浸杀试验,气温25～26℃,水温21～22℃,钉螺接触药物72h后,0.1、0.2、0.4、0.6、0.8mg/LLDS及WPN组和清水对照组钉螺死亡率分别为93.33%、100%、100%、100%、100%、100%和6.67%。现场浸杀试验,气温18～28℃,水温18～23℃,钉螺接触药物72h后,各组钉螺死亡率分别为91.11%、100%、100%、100%、100%、100%和3.33%。室内喷洒灭螺后7d,LDS0.2、0.4、0.6、0.8、1.0g/m2组、WPN组和清水对照组钉螺死亡率分别为90.00%、94.00%、96.00%、99.00%、99.00%、94.00%和6.00%;现场喷洒灭螺后7d,钉螺死亡率分别为80.00%、82.14%、88.35%、90.83%、96.55%、92.56%和4.55%,现场撒粉灭螺后7d,钉螺死亡率分别为74.77%、88.89%、94.50%、90.38%、92.17%、90.38%和4.55%。结论 10%氯代水杨胺可湿性粉剂在山丘型地区具有较好的灭螺效果。
Objective To observe the molluscicidal effect of a novel molluscicide,salt of quinoid 2,5 dichloro 4 nitrosali-cylanilide（LDS） on Oncomelania hupensis in laboratory and field of mountainous areas of Yunnan Province.Methods With the immersion method,10% LDS with concentrations of 0.1,0.2,0.4,0.6,0.8 mg/L was tested,and 50% niclosamide（WPN） with the concentration of 2 mg/L as well as fresh water were tested as the controls.The molluscicidal effects of 24,48,72 h were ob-served in lab and the field.With the insufflation method and powdering method,10% LDS with doses of 0.2,0.4,0.6,0.8,1.0 g/m 2 was tested and 50% WPN with the dose of 2 g/m 2 as well as fresh water were tested as the controls.The molluscicidal effects of 1,3,7 d were observed in lab and the field.Results At the room temperature of 25-26 ℃ and water temperature of 21-22 ℃,when exposed for 72 h by the immersion method,the snail death rates of above mentioned five concentrations of LDS and WPN as well as fresh water were 93.33%,100%,100%,100%,100%,100 % and 6.67 %,respectively in lab.At the field temperature of 18-28 ℃ and water temperature of 18-23 ℃,when exposed for 72 h by the immersion method,the snail death rates of above mentioned five concentrations of LDS and WPN as well as fresh water were 91.11%,100%,100%,100%,100%,100 % and 3.33 %,respectively in the field.When exposed for 7 d by the insufflation method,the snail death rates of five above mentioned dosages of LDS and WPN as well as fresh water were 90.00%,94.00%,96.00% 99.00%,99.00%,94.00 % and 6.00 %,respectively in lab and 80.00%,82.14%,88.35%,90.83%,96.55%,92.56 % and 4.55 %,respectively in the field.When exposed for 7 d by the powdering method,the snail death rates were 74.77%,88.89%,94.50%,90.38%,92.17%,90.38 % and 4.55 %,respectively in the field.Conclu-sion LDS has a good molluscicidal effect on Oncomelania hupensis in mountainous areas.
出处
《中国血吸虫病防治杂志》
CAS
CSCD
北大核心
2011年第4期395-401,共7页
Chinese Journal of Schistosomiasis Control
基金
国家高技术研究发展计划(863计划)(2004AA2Z3560)
国家科技支撑计划(2009BAI78B03)
国家重大科技专项(2009ZX10004-906)
关键词
钉螺
氯代水杨胺
杀螺效果
山丘型
云南省
Oncomelania snail
Salt of quinoid 2
5 dichloro 4 nitrosalicylanilide（LDS）
Molluscicidal effect
Mountainous area
Yunnan Province
