Fenitrothion (OMS 43) resistance in the taxon Anopheles culicifacies Giles

Two colonies of the taxon Anopheles culicifacies Giles (one from Maharashtra State and one from Gujarat State, India) produced 28 and 64% mortality rates, respectively, on 1% fenitrothion for 2 hours. Six-hour exposures were required to achieve mortalities of greater than or equal to 96% in both colonies.