| resistance in anopheles culicifacies sibling species b and c to malathion in andhra pradesh and gujarat states, india. | studies conducted in warangal, khammam and mahabubnagar districts in andhra pradesh and surat district in gujarat have revealed that anopheles culicifacies sensu lato (s.l.) populations were resistant to malathion. in the absence of indoor spraying of malathion in public health programs in the 3 districts of andhra pradesh, resistance is attributed to the extensive use of pesticides in agriculture. species b and c were sympatric in all areas surveyed, and both the species were resistant to malat ... | 1991 | 1895083 |