Vol. 5, Issue 3, Part A (2018)

Author(s): Adil EA Bala, Adam D Abakar, Muawiya AM Khair, Mohammed S Mohammed

Abstract: First attempt using the available adult traps (Light trap; Pyrethroid indoor-spray; window trap and clay pots) showed no encouraging results due to the absence of attractants. Therefore, susceptibility of adults Aedes aegypti was evaluated by using field-collected larvae. The larval surveillance of seven locations eastern and western banks of the Blue Nile north and south of Wad Madani, the state capital, resulted in observing Aedes aegypti larvae in Barakat nursery only. The larvae were reared in climatic rooms at a temperature of 25±2 °C and 80% relative humidity until reaching adulthood. The confirmed adults were placed in cages supported by sugar and blood fed on rabbits for continuous generation production. Testing for females adult susceptibility to Bendiocarb (1%); DDT (4%) and Permithrin (0.75%) was carried out with standard WHO impregnated papers according to the WHO (2013) method. Overall, all, the adult females were fully susceptible (1OO% mortality) to I hour of exposure to the diagnostic dosages of Permithrin (100% death after 40 minutes); Females were relatively less susceptible to DDT (74% and 93% death in one hour and 24 hours, respectively), however, the examined Aedes aegypti were scored resistant (100% alive after 24 hours) to Bendiocarb. According to our knowledge, the present study is the first report of resistant Aedes aegypti in Gezira state and could be in the Sudan. The implementation of such findings were discussed.