Vol. 3, Issue 9, Part G (2017)

Abstract
The investigations on parasitism of silkworm by E. bombycis were undertaken using PM x CSR₂ hybrid of the silkworm, Bombyx mori L. The study were taken in the aspects of host larval instar dependent parasitism by uzi fly under choice and no-choice conditions, parasitized host for oviposition and parasitoid density on growth and development of uzi fly. The results revealed that the female uzi fly laid considerably more number of eggs under non-choice condition when compared to choice condition on the silkworm larva. In exploited and unexploited host larvae female uzi fly preferred less for oviposition on the exploited host larvae as evidenced by the reduced number of eggs laid on such host larvae. The number of eggs laid on unexploited host larvae registered increased as compared to the exploited ones. The uzi female laid 1 to 5 eggs on considerably more number of host larvae (69) compared to laying 6 to 10 eggs on host larvae (16). Based on the above investigation it was noticed that there is a negative correlation between the number of eggs laid per host larva and the maggots emerging from the parasitized host larvae.