Adaptive performance of Trichogramma chilonis Ishii at low temperature

摘要: The low temperature adapted strain of Trichogramma chilonis was developed after rearing for 30 generations under laboratory conditions at 18–24°C with 95.0±0.44% parasitism. development, searching ability and biological parameters (18–24°C) T. studied in comparison the reared ambient temperature, a view to utilize them cooler months. Non-significant variation among nonadapted observed respect % parasitism, fecundity longevity when small glass vials. However, cage studies parasitoid's ability, 58% eggs were parasitized by as compared 17.2% non-adapted strain. host test indicated that adaptation led better such could be successfully utilized regime.