Effect of different diets of Corcyra cephalonicaon fecundity, longevity, and emergence percentage of Trichogrammatoidea bactrae Nagaraja. (Hymenoptera : Trichogrammatoidea) under laboratory condition in Arunachal Pradesh
Publication Date : 20/04/2016
Study was carried out to assess for fecundity, emergence percentage and longevity of Trichogrammatoidea bactrae Nagaraja on eggs of Corcyra cephalonica (Stainton)which was obtained by rearing the Corcyra larvae on different cereals as diets and its combination under State bio-control laboratory, Naharlagun, Arunachal Pradesh from 2012 to 2014. The maximum number of Corcyra egg wasparasitized when the parasitoid was reared on host egg produced from jobstear+rice bran (61.30) and minimum parasitism was when the trichogramma was produced from host egg reared on rice bran (42.70). Maximum female longevity of 9.1 days was observed on host egg reared on rice + maize; while minimum was 4.8 days on host egg reared on maize. Highest number of trichogramma adult emergencewas observed on Trichogrammatoidea bactrae fed on host egg reared on maize+rice bran (77.17) and lowest emergence observed on rice bran (57.82).Combined diet with rice bran seems to have positive effect on development of the parasitoid.Therefore, it is suggested that mixing 50% rice bran with different cereal is more suitable as well as economical for mass production of T.bactrae.This also implies that the quality of host diethad considerable effect on quality and efficiency of the egg parasitoid,Trichogrammatoidea bactrae Nagaraja.
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