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目的：研究中华按蚊对不同密度马来丝虫微丝蚴以及贵州和浙江两地虫源的易感性。方法：观察中华按蚊感染不同密度马来丝虫微丝蚴（ｍｆ）后蚊虫的存活率、蚊虫体内微丝蚴发育至感染期蚴（Ｌ３）率和感染蚊体内Ｌ３平均条数，同时观察浙江虫源（６代）和贵州虫源（３１代），微丝蚴发育至Ｌ３率。结果：感染微丝蚴密度为３２．５ｍｆ／μｌ和１４１．５ｍｆ／μｌ组的微丝蚴发育至Ｌ３率分别为３６．２％和８．７％，感染蚊体内Ｌ３平均条数分别为８．２４和０．３条。中华按蚊感染浙江虫源（６代）和贵州虫源（３１代），微丝蚴发育至Ｌ３率分别是４５．１％和２６．８％。结论：中华按蚊对感染密度为３２．５ｍｆ／μｌ－６６．４ｍｆ／μｌ时较易感，其对浙江虫源（６代）较贵州虫源（３１代）易感。
Objective: To study the susceptibility of Anopheles sinensis to microfilariae of different density Malayan filariasis and insect pests in Guizhou and Zhejiang provinces. Methods: The survival rates of mosquitoes infected with Anopheles sinensis with microfilariae of different density were observed. The rates of larvae (L3) and the mean number of L3 in infected mosquitoes were observed at the same time Zhejiang source (6 generations) and Guizhou source (31 generations), microfilariae development to L3 rate. Results: The microfilarial larvae that developed microfilariae infected with Microfilaria at densities 32.5 mf / μl and 141.5 mf / μl had an L3 rate of 36.2% and 8.7%, respectively. The average number of L3 in infected mosquitoes was 8 .24 and 0.3. Anopheles sinensis infection occurred in Zhejiang Province (6 generations) and Guizhou Province (31 generations). Microfilaria developed to L3 rates of 45.1% and 26.8%, respectively. Conclusion: Anopheles sinensis is more susceptible to infection at a density of 32.5mf / μl-66.4mf / μl, which is more susceptible to insect pests (31st generation) in Zhejiang Province than those in Guizhou Province.