Biochemical effects of some agricultural waste extracts against Culex pipiens (Diptera: Culicidae)

Third larval instar of Culex pipiens were exposed to sub-lethal concentration LC25 of Black and White liquors (waste extract from rice straw) for 24 hours to study its effect on some enzymes activity along different developmental stages of mosquito.Acetylcholinesterase (AchE) enzyme showed high activity in all stages of mosquito treated in the larval stage with black and white liquors. Treatment with black and white liquors showed lower in enzyme activity of esterases (α-est, β-est) and Glutathione s-transferase (GST). While, mixed function oxidase (MFO) enzyme showed high activity in all developmental stages of C. pipiens larval treatment with black and white liquors in comparing with control except in pupal stage low activity and not affected, respectively.

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