Larvicidal and adulticidal effect of rice straw extract against culexpipiens (diptera: culicidae)

Mosquitoes constitute a major public health problem as a vector of serious human and animal diseases which causes millions of illnesses cases, and deaths. In present study the author evaluate an industrial waste product from natural origin as larvaicide and adulticide agents on mosquito, Culexpipiens. Black liquor showed potency as larvicideand its potency was increased when mixed with the emulsifier in different ratio. The LC50 and LC95 for Black liquor alone, Black liquor with emulsifier 1:1 and 1:2 were 3944.6 and5766.5, 2886.7 and 4426.6 and 2184.1 and 3985.6 respectively. Also, the waste material has adulticidal activity and its potency increased by adding the emulsifier material by ratio 1:1. Larval treatment by Black liquor and Deltamethrin showed highly significant reduction in the percentage of pupation and adultemergence. The treated larvae with Black liquor had no gonotrophic cycle because the female emerged not feeding on blood. Finally the Black liquor which release during processing the paper from Rice straw consider promising larvicidal and adulticidal agents against Culexpipiens (Diptera: Culicidae) and can be included in IVM program.