云南临沧市边境地区登革热传播媒介分布调查

Investigation of distribution of dengue vectors in Lincang border area

目的为掌握临沧市边境地区登革热传播媒介埃及伊蚊和白纹伊蚊的分布特征。方法分别在临沧市耿马、镇康、沧源三个边境县的边境乡镇捕捞小型水体孳生的蚊类幼虫,带回实验室饲养羽化至成蚊,分类鉴定并计数。结果捕捞幼虫共羽化成蚊5属18种918只。库蚊属8种516只,构成比为56.21%;伊蚊属6种250只,构成比为27.23%;巨蚊属2种5只,构成比为0.54%;阿蚊属1种138只,构成比为15.03%;领蚊属1种9只,构成比为0.98%。捕获登革热主要传播媒介埃及伊蚊3只、白纹伊蚊159只,构成比分别为0.33%和17.32%,埃及伊蚊属临沧市首次发现。结论临沧市边境地区登革热主要传播媒介埃及伊蚊和白纹伊蚊同时存在,埃及伊蚊呈局部分布,白纹伊蚊分布广泛,一旦条件适合可引起登革热的流行。

Objective To understand the distribution of Dengue vectors, Aedes aegypti and Aedes albopictus in borderarea of Lincang City. Methods Mosquito larvae were collected from a variety of small water breeding sites, in border areas ofGengma, Zhengkang and Cangyuan. After feeding mosquitoes larvae to adult mosquitoes in the laboratory, the mosquitoes countand species identification were carried out. Results The total 918 larvae belonging to 18 species of 5 genus were cultivatedto adults. 516 culicine belonged to 8 species（ 56.21%）; 250 Aedes mosquitoes belonged to 6 species（27.23%）; 5Toxorhynchites belonged to 2 species（0.54%）; 138 Armigeres belonged to 1 specie（15.03%）; 9 Heizmannia belonged to 1specie（ 0.98 %）. Among which, 3 Aedes aegypti（ 0.33%） were first discovered in Lincang City and 159 Aedes albopictus（17.32%） were found. Conclusion Aedes aegypti and Aedes albopictus as main vectors of Dengue existed at the same time inborder areas of Lincang City, besides,Aedes aegypti was distributed locally and Aedes albopictus was widely distributed. Soonce the conditions are suitable, the prevalence of Dengue may be caused.