拟除虫菊酯浸泡蚊帐对按蚊残效的实验观察

EXPERIMENTAL OBSERVATION ON RESIDUAL EFFECT OF ANOPHELES BY PYRETHROID IMPREGNATED BEDNET

目的 观察不同剂型的拟除虫菊酯浸泡棉蚊帐和尼龙蚊帐对中华按蚊和嗜人按蚊的效果。方法 采用 WHO推荐的接触筒强迫接触法。结果 棉蚊帐和尼龙蚊帐浸药后 180 d,拜虫杀(SC12 .5 %高效氟氯氰菊酯 ) 12 .5 mg a.i/ m2 ;杀飞克 (EW5 %氟氯氰菊酯 ) 15 m g a.i/ m2 ;克敌 (SC2 .5 %溴氰菊酯 ) 12 .5 mg a.i/ m2 ;凯素灵 (EC2 .5 %溴氰菊酯 ) 15 mg a.i/ m2和奋斗呐 (WP2 .5 %顺式氯氰菊酯 ) 2 5 m g a.i/ m2对中华按蚊和嗜人按蚊的毒效仍达 10 0 %。结论 在疟疾流行季节前 ,用杀虫剂浸泡蚊帐 1次 ,能够对媒介按蚊起到有效防制。

Objective To observe the residual effects on Anopheles anthropophagus and An. sinensis using different forms of pyrethroid treated with cotton and nylon bednets. Methods The method WHO suggested was used. Results After 180 days, the residual effects of pyrethroids impregnated cotton and nylon bednets, Responsar (SC 12 5% beta cyfluthrin) 12 5 mg a.i/m 2, Solfac (EW 5% cyfluthrin) 15 mg a.i/m 2, Crackdown (SC 2 5% deltamethrin) 12 5 mg a.i/ m 2, K othrine (EC 2 5% deltamethrin) 15 mg a.i/ m 2 and Fendona (WP2 5% alphacypermethrin) 25 mg a.i/ m 2 , were still 100% for Anopheles anthropophagus and An. sinensis. Conclusion Pyrethroid impregnated bednets before the malaria transmission season will be efficient for vector control in Jiangsu Province.