International Journal of Entomology Research

Authors
V Ramalakshmi, Manish Kumar Yadav, Deepayan Padhy, Sudhanshu Bala Nayak

Abstract
The present study is aimed to find out the effect of UV radiation on Corcyra eggs and its effect on Trichogramma. There are not so many research works have been carried in the given area but a few which revealed that the UV radiation increased the adult and female emergence rate and it helps Trichogramma chilonis to parasitize Corcyra eggs in mother culture without any difficulty and if the eggs escape from the parasitoid, the radiation can damage the host eggs. Even though UV treatment disrupts physiology of the egg and stops further development, the nutrients available in such eggs may deteriorate with passing of time between irradiation and parasitoid introduction. Effect of this on parasitoids may not be realized in the first few generation. Trichogramma species face challenges in parasitizing eggs in normal conditions due to natural resistance mechanism evolved by the host. In this study it was noted that the longevity, fecundity and percentage emergence were enhanced by inducing stress factors, such as UV radiation to the eggs. These eggs can be used to successfully rear T. chilonis and for use as a biocontrol agent for lepidopteron pest.