EFFECT OF CERTAIN INSECTICIDES ON SOME BIOCHEMICAL ASPECTS OF RHYNCHOPHORUS FERRUGINEUS (OLIV.)

The tested bio agents caused a significant increase in the soluble protein content more than the untreated larvae. In case of the adult males, Bt. and B. bassiana, caused a non significant elevation in the soluble protein content. However, chlorpyifos-ethyl and imidacloprid caused a significant effect on this parameter. In case of adult females Bt, Chlorpyrifos-ethyl and imidacloprid caused a significant increase reaching 167.98, 92.34, 133.64 and 179.58% of the control value, respectively.
Bt., B. bassiana, chlorpyifos-ethyl and imidacloprid caused a significant inhibition in acid phosphatase activity of treated larvae. However, Bt., B. bassiana, chlorpyifos-ethyl and imidacloprid caused a significant increase in the alkaline phosphates activity.
Bt., B. bassiana, and imidacloprid showed a non-significant alteration of acetylcholinesterase in the treaded larvae and chlorpyifos-ethyl caused significant inhibition compared to the untreated value. As for adult males, Bt. caused a significant increase while chlorpyifos-ethyl caused (56.08%) inhibition.
Considering protease activity the tesed agents, i.e., Bt., B. bassiana, chlorpyrifos-ethyl and imidacloprid caused a significant inhibition of larvae. As for adult males the activity was significantly increased. Bt., B. bassiana, and imidacloprid caused a significant inhibition in protease of adult females.
The activity of ATP-ases was significantly inhibited by, Bt., B. bassiana chlorpyrifos-ethyl and imidacloprid. Total ATP-ases in the treated adult males exhibited a significant increase by Bt., B. bassiana, chlorpyrifos-ethyl and imidacloprid, respectively. However the treated adult females, exhibited a general and significant inhibition except for B. bassiana.