EFFECT OF SOME INSECTICIDES ON CERTAIN ENZYMES OF SPODOPTERA LITTORALIS (BOSID.)

Abstract

The effects of three new insecticides belonging to different groups on some enzyme activities of the 4 th instar larvae of Spodoptera littoralis were studied. The results proved that the three tested insecticides i.e. Indoxacarb, Emamectin benzoate and Pyridalyl inhibited all the enzymes. In this investigation, Indoxacarb was the most inhibitive of α-esterase and GST activities. Emamectin benzoate, resulted in pronounced inhibition of GOT, LDH. But , Pyridalyl induced significant stimulation of GPT, LDH and β-esterase.