Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2002.563.565Trichogramma evanescens Westwood and Trichogrammatoidea bacterae Nagaraja as Biological Control Agents Against Two Irradiated and Non-irradiated Stored Product Pests]]>El-MandarawyMona B.R.RizkSalwa A.5200255Studies on the effect of substerilizing doses of gamma radiation on the stored product insects Callosobruchus maculatus (Fabricius) and Corcyra cephalonica (Stainton) eggs before parasitization by Trichogramma evanescens Westwood and Trichogrammatoidea bacterae Nagaraja were carried out. C. maculatus and C. cephalonica eggs were exposed to the respect calculated LD25 level 92.48 Gray and 1.39 Gray as substerilizing doses. The percent of parasitization and fecundity differed significantly between the two parasitoid species and the two hosts. They were higher in T. evanescens than in T. bacterae. However, the percent of parasitization and fecundity were insignificantly differed between the irradiated host eggs as compared to the non-irradiated ones. Highest emergence rate was recorded from irradiated and non-irradiated C. cephalonica eggs that parasitized with T. evanescens. Radiation had no effect on the developmental period (days) and adult longevity of the two parasitoids reared from the two hosts.]]>Abbassy, S.A.,1997Callosobruchus maculatus F. with reference to its control.]]>1997Abbott, W.S.,192518265267Abdel-Hafez, A. and M.A. Nada,2000Trichogrammatoidea bacterae nagaraja in the IPM programme for the control of pink bollworm Pectinophora gossypiella (Saund,) in Egypt.]]>1410091014Bourarach, K. and N. Hawlitzky,1989Trichogramma evanescens et Trichogrammatoidea lutea (Hym.: Trichogrammatidae).]]>3495104Cheng, W.Y., S.M. Chen and Z.T. Wang,1999Trichogramma ostrinae on different host eggs.]]>1661934Cornwell, P.P. and J.O. Bull,196011757768Decella, J.,198119193198Farghaly, H.T., Z.A. Ragab and M.F.S. Tawfik,1980Trichogramma evanescens West.]]>2261265Finney, D.J.,1952pp: 333pp: 333Hassaballa, Z.A., M.Y.Y. Ahmed and M.A. Rizk,1985Corcyra cephalonica (Staint.).]]>16291298Hussain, T. and O. Imura,1989Callosobruchus chinesis (L.) (Coleoptera : Bruchidae).]]>24273280Kazmer, D.J. and R.F. Luck,1991Trichogramma pretosium.]]>563740Locatelli, D.P. and L. Limonta,1998Ephestia kuehniella (Zell.), Plodia interpunctella (Hbn.) and Corcyra cephalonica (Staint.) (Lepidoptera: Pyralidae) on kernels and wholemeals of Fagopyrum esculentus Moench and Triticum aestivum L.]]>34269276Navarajan, P.A.V., M. Mohanasundaram and T.R. Subramaniam,1975Trichogramma australicum Gir. and T. japonicum Ashm.]]>62190198Shalaby, F.F., A.M.A.E. Hafez, E.F.E. Kayat and M.A.A.E. Sharkawy,1999Trichogramma spp. (Hymenoptera: Trichogrammatidae) reared on different hosts.]]>1999pp: 223227Shenishen, Z. and E.M. El-Zanaty,1987Trichogramma evanescens Westwood, (Hymenoptera: Trichogrammatidae) and its host Sitotroga cerealella Olivier, (Lepidoptera: Gellichiidae).]]>16143150Van Huis, A. and M. de Roy,1998Callosobruchus maculatus (Coleoptera: Bruchidae) and its egg parasitoid Uscana lariophaga (Hymenoptera: Trichogrammatidae).]]>889399Walder, J.M.M. and E.M. Wiendl,1973Callosobruchus maculatus anois de scociedade.]]>2102108Strong, R.G., G.J. Partidae and D.V. Warner,196861747751Jackai, L.E.N. and R.A. Daoust,19863195119