Survey on the mosquito population density in Qingdao City in 2016

WANG Wei; GAO Ru-qin; MA Xiao-fang; ZHOU Heng-zhao; JIANG Hong-rong

Abstract：Objective To observe the species and geographic distribution of mosquitoes and provide the scientific basis information for control.Methods Collecting adult mosquitoes from different environment using carbon dioxide method,monitoring the breeding situation of Aedes by Breteau index method,and collecting larva from waters with spoon method.Results The dominate population of mosquitoes in Qingdao was Culex pipiens pallens and Aedes albopictus,respectively accounting for 47.53％ and 8.54％,and distributed widely in urban and rural areas.The percentage of Aedes albopictus increased by 14.59 times in the past ten years in urban areas.Local dominant species were Armigeres subalbatus,Culex modestus,Anopheles sinensis,mainly distributed in the rural areas,Jiangshan Wetlands of Laixi City.Mansonia uniformis and Coquillettidia ochracea were the first recorded in Qingdao.The Breteau index was low from June to September.It reached 8 in July in some residential and achieved the national control of dengue fever transmission threshold.The mosquito larvae were hardly found in large waters,mostly in small waters;most mosquitoes after eclosion were Aedes albopictus.Conclusion Mosquito population density and seasonal fluctuation are related to different climates and environments.