Comparisons of rice field mosquito (Diptera: Culicidae) abundance among areas with different agricultural practices in northern Thailand.
Adult mosquitoes were collected from 3 areas in northern Thailand with different availabilities of rice fields for larval habitats by using blacklight, truck, and pig-baited traps. Culex tritaeniorhynchus Giles and Culex gelidus Theobald were dominant in all samples. Significant study-area differences were found in light and truck trap collections for Cx. tritaeniorhynchus and Cx. gelidus, but not for Culex vishnui Theobald + Culex pseudovishnui Colless. In pig-baited sample area differences were significant only for Cx. gelidus. Adults of Culex fuscocephala Theobald were relatively rare, comprising only 0.6-7.9% of the total mosquitoes collected. When compared with the results from previous studies in the Chiangmai area, we conclude that Cx. fuscocephala has become a minor species and that changes in the mosquito fauna have occurred in northern Thailand.
Department of Medical Entomology, Nagasaki University, Japan.
Y
Y
Tsuda
M
M
Takagi
W
W
Suwonkerd
A
A
Sugiyama
Y
Y
Wada
D000383:Agriculture / Q000379:methods*; D000818:Animals; D003465:Culex / Q000145:classification / Q000254:growth & development; D007814:Larva; D012275:Oryza; D011156:Population Density; D013045:Species Specificity; D013552:Swine; D013785:Thailand