Analysis of the results of the survey on the current status of verwintering breeding sites of Aedes albopictus in Wuhu City in 2020

AN Zhou; WANG Fei; TONG Fei; YE Qin; QIAN Ming-feng; ZHANG Jun-mei

doi:10.19821/j.1671-2781.2023.06.010

Abstract：Objective To understand the current status of overwintering breeding sites of Aedes albopictus in Wuhu City and provide a basis for scientific prevention and control of Aedes albopictus during the overwintering period.Methods In January 2020,samples of stagnant water and mud were collected from 8 counties(cities and districts)in Wuhu City,and the incubation data of Aedes albopictus in different habitats,container types and stagnant water types were statistically described by descriptive epidemiological methods.Results A total of 244 valid samples were collected,and the positive breeding rate of overwintering Aedes albopictus in urban residential areas,rural natural villages and the whole city was 19.88%(32/161),16.87%(14/83)and 18.85%(46/244)respectively.The positive rate of waste tires and unused containers was higher,26.32%and 18.37%,respectively.The highest positive rate of Aedes albopictus was 23.02%in containers with water accumulation greater than 1 liter,followed by containers basically dried,with a positive rate of 21.43%.Conclusion The positive rate of Aedes albopictus eggs or larvae in the overwintering breeding sites of mosquitoes was high in all counties of Wuhu City;used tires and unused containers were the main types of breeding containers.We should strengthen the monitoring of Aedes albopictus overwintering breeding sites and actively clean up the accumulated water in the breeding grounds for Aedes albopictus in the late winter and early spring.The same attention should be paid to removing dried containers before the spring rainy season to prevent the formation of stagnant water which allows Aedes albopictus eggs to quickly hatch larvae,to reduce the density of Aedes albopictus throughout the year.density of Aedes albopictus throughout the year.