author(s)
S. Lingathurai, M. Pushpalatha, R. Raveen, P. Vinolaya Priyatharsini, R. Sathikumaran and P.C. Sathya Narayanan

abstract
In this context the toxic effect of the selected insecticide, BIOVECTRA, which contains Bacillus thuringiensis, SICORIN 10 (Cypermethrin), SUFOS (Monocrotophos), Thiodan (Endosulfan) and Vijay Neem (Neem oil + Azadirachtin) as active ingredients on the egg parasitoid, Trichogramma chilonis ishii were studied. Toxicological bioassays were performed in different pesticides on T. chilonis. Lethal doses LC50 of B. thuringiensis (52.70mg), cypermethrin (0.960ppm), monocrotophos (7.76ppm), endosulfan (20.87ppm) and Vijay Neem (621.71ppm) were estimated in bioassays, with residual contact bioassay. Maximum significant inhibition of egg hatchability was observed after Cypermethrin treatments followed by Monocrotophos and Endosulfan. Maximum adult emergence was recorded with Vijay Neem treatment followed by B. thuringiensis. Proteins, carbohydrates and lipids constituents were maximum inhibited by the cypermethrin, monocrotophos and endosulfan treatments. Our outcome strongly suggested that botanical pesticides and microbial pesticides which are safe and sound to the nontarget organisms.