Insecticides Susceptibility status of Ae. aegypti, An. gambiae complex, and Culex sp in West Darfur, Sudan

An experimental study was carried out in El geneina town, west Darfur state, Sudan, during the period of October - December 2018. This study aimed to determine the susceptibility status of Ae. aegypti, An. gambiae complex and Culex sp against four insecticide groups (Carbamates, pyrethroids, organophosphate and organochlorine). The immature stages were reared to the adult stage at the insectary unit of integrated vector management and the first-generation progeny (F1) were exposed to WHO insecticide-impregnated papers. The treatments used for the mosquitoes consist of carbamates (0.1% bendiocarb), organophosphates (0.25% pirimiphos-methyl), pyrethroids (0.05% deltamethrin, permethrin 0.75 %) and organochlorines (4% DDT). Ae. aegypti is susceptible to deltamethrin, permethrin and pirimiphos methyl (100%) mortality, whereas highly resistant to DDT 29 % and low resistant to bendiocarb 82%. Moreover, An. gambiae complex is susceptible to organophosphate group 100% mortality and resistant to pyrethroids (deltamethrin 42%, permethrin 83 %) and DDT 79%) table 1. Culex sp resists all insecticide classes except pirimiphos methyl 98%.