昆虫寄生性Lecanicillium muscarium融合株2aF43およびオンシツツヤコバチの併用によるオンシツコナジラミ防除効果の評価

This study aims to evaluate the control efficacy of greenhouse whitefly by co-application of entomopathogenic fungus Lecanicillium muscarium hybrid strain 2aF43 and greenhouse whitefly parasitoid Encarsia formosa, and to reveal the interaction between both natural enemies. Although, the emergence rate of adult greenhouse whitefly reached 93.2% in control plot, co-application plot indicated significantly lower emergence rate (4.2%). Co-application plot showed higher fungal infection compared with singularly L. muscarium inoculated plot. Parasitization rate in singularly E. formosa released plot reached 81.7% and emergence rate of parasitoid was 72.1%, but lower parasitization and emergence rate of parasitoid (13.2% and 2.0% respectively) were detected on co-application plot. Our results demonstrated that there were antagonistic interactions between both natural enemies, but co-application will lead to additively enhanced control efficacy.http://www.agr.kyushu-u.ac.jp/sanshi-kyushu/entomotech36.htm