Surveillance of insecticide resistance and density of the dengue vector Aedes albopictus in four prefectures of Zhejiang province, China, 2018
LIU Qin-mei1, HOU Juan1, WEI Ling-ya2, MA Min3, ZHONG Jian-yue4, WU Yin-ping5, WANG Jin-na1, WU Yu-yan1, LI Tian-qi1, GONG Zhen-yu1
1 Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, Zhejiang Province, China; 2 Hangzhou Center for Disease Control and Prevention; 3 Ningbo Center for Disease Control and Prevention; 4 Quzhou Center for Disease Control and Prevention; 5 Yiwu Center for Disease Control and Prevention
Abstract：Objective To investigate the density fluctuation of the dengue vector Aedes albopictus and its resistance to commonly used insecticides in four regions of Zhejiang province, China, and to provide a basis for rational selection and use of insecticides and scientific prevention and control of dengue. Methods The density of adult Ae. albopictus was monitored by the double mosquito net method in four cities of Hangzhou, Ningbo, Quzhou, and Yiwu in Zhejiang province from April to November of 2018. The larvae were collected and reared to adults for determining resistance using the diagnostic doses of insecticides. Results The annual average net trap index was 1.33 mosquitoes/net·hour in the four prefectures of Zhejiang province, and that was 1.60 mosquitoes/net·hour in residential areas, which was the highest among three habitats. The Ae. albopictus population of Hangzhou was sensitive to three pyrethroids and malathion, and showed suspected resistance to propoxur. The mosquito population of Ningbo showed sensitive to beta-cypermethrin, suspected resistance to deltamethrin, permethrin, and propoxur, and resistance to malathion. The Ae. albopictus populations of Quzhou and Yiwu were sensitive to malathion, and exhibited suspected resistance to three pyrethroids and propoxur. Of the mosquito populations of the four cities, 5.00%, 60.00%, and 35.00% showed resistance, suspected resistance, and sensitivity to five insecticides, respectively. Conclusion In the four cities of Zhejiang province, the density of Ae. albopictus in residential areas and parks peaks in July. The mosquitoes develop varying degrees of resistance to the tested insecticides. Strengthening the surveillance of their density fluctuation and insecticide resistance contributes to slowing the development of resistance and effectively controlling dengue.
刘钦梅, 侯娟, 韦凌娅, 马敏, 钟建跃, 吴因平, 王金娜, 吴瑜燕, 李天奇, 龚震宇. 浙江省4个地区2018年登革热媒介白纹伊蚊密度及抗药性监测[J]. 中国媒介生物学及控制杂志, 2020, 31(3): 263-267.
LIU Qin-mei, HOU Juan, WEI Ling-ya, MA Min, ZHONG Jian-yue, WU Yin-ping, WANG Jin-na, WU Yu-yan, LI Tian-qi, GONG Zhen-yu. Surveillance of insecticide resistance and density of the dengue vector Aedes albopictus in four prefectures of Zhejiang province, China, 2018. Chines Journal of Vector Biology and Control, 2020, 31(3): 263-267.
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2020, Vol. 31 
