不同剂型溴氰菊酯和氟氯氰菊酯对中华按蚊击倒力的试验

目的 比较不同剂型溴氰菊酯和氟氯氰菊酯浸泡蚊帐后的灭蚊效果。方法 采用击倒试验法和药帐接触法,观察中华按蚊的击倒和死亡情况。以Ｆｉｎｎｅｙ机率分析法进行统计分析,并进行显著性检验。结果 中华按蚊对不同剂型的溴氰菊酯和氟氯氰菊酯的ＫＴ５０在７．１７－１５．４５ｍｉｎ之间;被击倒蚊虫２４ｈ后的死亡率均为１００％;接触浸药帐ｍｉｎ的校正死亡均大于９０％;１年后中华按蚊的ＫＴ５０仍在１０．８２－１６．１７

STUDY ON THE KNOCKDOWN TEST ON EXPOSURE TO DIFFERENT FORMULATION OF DELTAMETHRIN AND CYELUTHRIN IN ANOPHELES SINENSIS

Aim To compare the effects on different formulation of the impregnated bednet with deltamethrin and cyfluthrin Methods Using knockdown test and contact with drug net to survey the mortality and knockdown rate of Anopheles sinensis and made an analysis by Finnay probit Results The KT 50 of Anopheles sinensis to different formulation of deltamethrin and cyfluthrin were between 7 17 to 15 45 min,The mortality was 100% after exposure 24 h The corrective mortality was more than 90% in 3 min to contact with impregnated net The KT 50 of An sinensis still kept in 10 82 to 16 17 min one year later The mortality 24 h after exposure was more than 50% Conclusion The An sinsnsis on exposure to net with deltamethrin and cyfluthrin were not only to possess a strong toxicity,but also has a persistant effect The methods are easy to operate and good for field use