北京水稻种植区蚊虫种类及幼虫孳生情况调查OA

Objective To investigate the species composition of mosquitoes and breeding conditions of larvae in the rice planting areas of Beijing,and to provide a scientific basis for mosquito control in rice fields.Methods Adult mosquitoes were collected using CO2-baited light traps,and mosquito larvae(including pupae)were sampled via the dipping method.Results A total of 4 genera and 6 species of adult mosquitoes were captured in the study area.The dominant species were Culex pipiens pallens,Cx.tritaeniorhynchus,and Anopheles sinensis.The average adult mosquito density was 5.11 specimens per trap-hour,with slightly lower density in July compared to August.For larvae and pupae,3 genera and 4 species were identified,dominated by Cx.tritaeniorhynchus,An.sinensis,and Aedes vexans.Conclusions The mosquito species composition in Beijing's rice planting areas is diverse.Mosquito control strategies should prioritize the management of adult mosquitoes,while density control of mosquito larvae in paddy fields can be achieved through intermittent irrigation techniques.