Trichogrammatids: Adaptation to Stresses

摘要: Mass-reared trichogrammatids species require to be fortified with adequate levels of tolerance the common physical and chemical stresses encountered in target crop ecosystems. Past studies on effects two factors—temperature humidity—on biology Trichogramma have shown that temperature below 15 or above 35 °C tends cause mostly negative their survival and/or performance. It is possible identify higher-temperature-tolerant strains among native focused surveys as undertaken recently East Africa. The other approach being successfully pursued at NBAII develop such by exposing colonies incremental rearing across generations. For instance, temperature-tolerant recorded significantly higher parasitism than laboratory strain up 40 °C.