Susceptibility of the malaria vector Anopheles culicifacies (Diptera: Culicidae) to DDT, dieldrin, malathion, and lambda-cyhalothrin.

The susceptibility of the malaria vector Anopheles culicifacies to DDT, dieldrin, malathion, and lambda-cyhalothrin was determined in Karnal, Yamunanagar, and Ambala districts of Haryana State, India. The vector population showed a high degree of resistance to DDT and dieldrin. The test mortality to DDT and dieldrin ranged from 25% to 28% and 18% to 20%, respectively, in Nadasahib of Ambala districts. The mortality of An. culicifacies to malathion ranged between 65% and 68%. All the tests with lambda-cyhalothrin resulted in 100% mortality of An. culicifacies. DDT and dieldrin resistance did not confer cross-resistance to lambda-cyhalothrin in An. culicifacies.