广东省媒介按蚊的子孢子自然感染率调查

近几年，在广东省疟疾流行区的23市县区166个疫点（村）中，以人诱半通宵捕蚊方法进行媒介按蚊调查，共捕获按蚊7种，其中有我省传疟媒介嗜人按蚊、中华接蚊、微小按蚊和日月潭按蚊，分别占捕获按蚊总数的24．0％、48．8％、14．1％和8．1％，其余按蚊占5．0％。而在12个市县36个点（村）中，以牛房全捕法共捕获按蚊11种，上述4种媒介按蚊分别占捕蚊总数的0．3％、26．4％、42．4％和9．5％，其他按蚊占21．4％。全省有11个市县发现嗜人按蚊。历年媒介按蚊及其传疟作用的调查结果表明，我省4种传疟媒介的子孢子自然感染率嗜人按蚊为0．35～0．54％，中华接蚊为0．15～0．93％，微小按蚊为0．23～5．94％，日月潭按蚊为0．05％。

Investigation of Malaria Vectors and Their Positive Sporozoite Rate in Guangdong Province

In recent years, the investigations of malaria vectors in the outbreak spots were conductedby man bite collection at 166 sites of 23 counties in Guangdong Province. Seven species of Anophelineswith a total of 13236 were caught. The ratios were 48. 8 % (6463/13236 ) for An. sieaesie, 24. 0 %(3718/13236) for An. anthropophagus, 14. 1 % (1865/13236) for An. minimus and 8. 1 % (1070/13236) for An. candidiensis respectively. Only 5. 0 % (660/13236) of the ratio was others of Anophelines. Anophelines survey by cattle shed collection was conducted also. The ratios of these were 26. 4 %,0. 3 %, 42. 4 % and 9. 5 % respectively, but 21. 4 % Of the ratio was others of Anophelines. An. anthropophagus, the important vector of Guangdong Province, was found in eleven counties of GuangdongProvince.The positive sporozoite with four species of Anophelines had been found widely. The positive sporozoite rates were by 0. 15 - 0. 93 % for An. siensie, 0. 35 - 0. 54% for An. anthropophagus,0. 23 5. 94% for An. minimus and 0. 05 % for An. candofiensis respectively.