Species of mosquitoes collected with CDC light traps in Yokohama

Abstract

Mosquitoes were collected in 20 parks in Yokohama to elucidate the seasonal and local distribution, as a part of research to survey the invasion of West Nile virus into Yokohama. CDC light traps combined dry ice were settled to gather adult mosquitoes in each 18 parks of 18 wards, and two parks in the harbor area during the period from July to November, 2003. The total number of mosquitoes was 2,242, and they were divided into 7 genera, 12 species. The dominant species captured were Culex pipiens complex (68.6%), followed by Aedes albopictus (24.3%). Culex pipiens complex was observed in each of 20 parks throughout the research period, but number of individuals exceeded in harbor area.