Investigation of mosquitoes,flies and cockroaches at Guangdong-Macao In-Depth Cooperation Zone in Hengqin in 2024

LIU Dexing; LI Tingting; WEI Xiaoya; QIU Deyi; WU Siwei; CHEN Jian

doi:10.19821/j.1671-2781.2026.01.010

Abstract：Objective To understand the population composition and seasonal fluctuation of mosquitoes,flies,and cockroaches at the Guangdong-Macao In-Depth Cooperation Zone in Hengqin,2024,so as to provide scientific basis for control and prevention of vector and vector-borne diseases.Methods The investigation of adult mosquitoes were conducted using the human landing catch method,larvae mosquitoes using the route method,flies using sweep nets method,and cockroaches using artificially collected at night.Results A total of 2 190 mosquitoes were collected,including 562 adults and 1 628 larvae,were identified as belonging to 3 subfamilies,8 genera,and 17 species,and Aedes albopictus and Armigeres magnus were both the dominant species.There were two peak periods for adult mosquito occurred in May and October,respectively.A total of 895 flies were collected and identified as belonging to 5 families,43 genera,and 71 species,with Chrysomya megacephala,Seniorwhitea princeps,Parasarcophaga brevicornis,and Hemipyrel lialigurriens being the dominant species.The peak period for fly population was from August to October.A total of 1 019 cockroaches were collected and identified as belonging to 3 families,14 genera,and 21 species,with Rhabdoblatta parvula,Blata vilis,Blattella bisignata,Opisthoplatia orientalis,Periplaneta americana,Pycnoscelus surinamensis,B.singularis,and B.germanica being the dominant species.The peak period for cockroach population was from May to July.Conclusion The Guangdong-Macao In-Depth Cooperation Zone in Hengqin is rich in mosquitoes,flie,and cockroaches,and there are obvious seasonal fluctuations.Targeted prevention and control measures should be taken for controlling these three vectors.