Ecological observations on the anopheline mosquitoes of Jalpaiguri Duars, West Bengal

A nine month entomological study was conducted from August 1989 to April 1990 in Jalpaiguri duars of West Bengal where malaria has been persistent problem. Amongst the anopheline fauna three vector species were recorded; An. minimus was the principal vector supported by A. dirus during the rainy months and An. fluviatilis in dry months. All the three vectors were found in close association with human orbit and An. minimums was found to be primarily a domestic vector. The primary role of An. minimus in the transmission of malaria in the region has been highlighted. Observations on seasonal variation, biting preferences, and biting time and vector infection rates were recorded.