Vol. 8, Issue 3, Part A (2021)

Author(s): Mohammed Mustafa Baig, Dilip Kumar Panigrahi, Manoj Kumar Patnaik, Premalata Acharya, Dolly Choudhury, Balakrishnan Vijayakumar, Sudhansu Sekhar Sahu and Ashwani Kumar

Abstract: Insecticides are a valuable resource in vector control programmes. The programmes primarily rely on the susceptibility of the vectors against the insecticides. The current study determined the insecticide susceptibility of two major dengue vectors, Aedes aegypti and Ae. albopictus in Koraput district of Odisha. Immature stages of dengue vectors were collected from domestic and adjoining mosquito breeding habitats and were reared to adult stage (F₁), then exposed to insecticide impregnated papers. The treatments used were diagnostic concentration of organochlorines (4% DDT), pyrethroids (0.05% deltamethrin) and organophosphates (5% malathion). We found Ae. aegypti was resistant to DDT, deltamethrin and developed a possible resistance to malathion, while Ae. albopictus was resistant to DDT but susceptible to both malathion and deltamethrin. Hence there is an urgent need for implementation of proper insecticide resistance management strategies to control dengue vectors during outbreak.