Application of pupal parasitoids for the biological control of Drosophila suzukii (Diptera: Drosophilidae) in berry fruit production

The spotted-wing drosophila, Drosophila suzukii, poses a significant threat to European stone fruit and berry production. Conventional management methods often prove partially effective, prompting the need for alternative protection strategies. The "ParaDrosu" project aims to develop a biological control approach utilizing two native German parasitoid species: Trichopria drosophilae and Pachycrepoideus vindemiae. Key aspects are investigated, including mass rearing, climatic suitability, and application techniques. Here, we report on laboratory studies assessing the impact of organic plant protection products on parasitoid lifespan and parasitization rate, as well as field trials to evaluate parasitoid dispersal and efficacy. Results suggest potential for biological control, highlighting the importance of further optimization and integration into pest management strategies.