拟除虫菊酯浸泡大网孔门窗帘毒杀侵入实验小屋蚊虫的研究

本研究采用牛房实验小屋，加装不透光百叶窗和透光门廊，从而全面观察药帘对侵入实验小屋蚊虫毒杀情况，包括蚊虫入屋前接触药帘时和屋内蚊虫外逸出屋外后的死亡情况。结果表明，澳氰菊酯、二氯苯醚菊酯毒效强和持效长，浸泡门窗帘后６个月１８次试验，对侵入屋内蚊虫毒杀，平均死亡率分别为８９．４％和９０．６％。两药对入屋内蚊虫的吸血率均没有明显减少，可能与诱饵动物的吸引力有关。二氯苯醚菊酯有明显驱避作用，其减少蚊虫入屋率，按蚊为７０．６％，库蚊为７５．２％均没有明显减少，阿蚊却没有效应。

STUDY ON THE POISONING EFFECT OF DELTAMETHRIN AND PERMETHRIN IMPREGNATED DOOR AND WINDOWS CURTAINS WITH WIDE-MESHES ON MOSQUITOES INVADED INTO THE EXPERIMENTAL HUT

In this study a cow shed with non-transparent shuttle window and bright porch was employed as the experimental hut to make overall observation on the poisoning effect of the impregnated door and window curtains on the mosquitoes invaded into the hut including the mortality of the mosquitoes when contacting with the curtains before invading into the hut and of those flying out of the hut through the Curtains.The results reveal that the poisoning effect of deltamethrin and permethrin is high and peristent. 18 tests in six months after the impregnation had showed that the mean mortality rates of the mosquitoes invaded into the huts through deltamethrin and permethrin impregnated curtains were 89.4% and 90.6% respectively. There was no obvious decreasing in the blood feeding rates of the mosquitoes invaded into the huts through the curtains impregnated with the two insecticides.This might be associated with the attraction of the bait animal. In addition, permethrin showed an apparent repellent effect on mosquitoes and under the action of which the reduction of the entry rates for Anopheles and Culex mosquitoes were 70.6% and 75.2 % respectively, but no repellent effect on Armingeres mosquitoes was observed. This study was partly supportedby the UNDP/World Bank/WHO sepecial Programme for Researeh and Training in Tropical Diseases (TDR) (ID:920374)