Autoria: KRÜGER, A. P.; GARCEZ, A. M.; SCHEUNEMANN, T.; NAVA, D. E.; GARCIA, F. R. M.

Resumo: Abstract: In South America, the resident pupal parasitoid Trichopria anastrephae Costa Lima (Hymenoptera: Diapriidae) is a potential biological control agent of the pest Drosophila suzukii Matsumura (Diptera: Drosophilidae). In the present study, we (1) examined the behavior of T. anastrephae towards diferent host (D. suzukii) and host-substrate (strawberry) cues in choice and non-choice bioassays in laboratory, and (2) examined the density-dependent parasitism of T. anastrephae in D. suzukiiinfested strawberries in a greenhouse. When given a choice, female parasitoids walked longer over chambers with fruits infested with eggs, larvae, or pupae of D. suzukii, when compared to healthy uninfested strawberries, and over overripe fruits when compared to unripe or ripe fruits. In the greenhouse assay, we observed an increase in parasitism and a decrease in the number of D. suzukii emerging per fruit with an increase in the number of parasitoids released. Our results allow a better understanding of the behavior and parasitism of T. anastrephae in D. suzukii-infested strawberries and provide useful data for potential biological control programs using this parasitoid.

Ano de publicação: 2024

Tipo de publicação: Artigo de periódico

Unidade: Embrapa Clima Temperado

Palavras-chave: Biocontrol, Controle Biológico, Drosophila de asa manchada, Fruto, Parasito de Planta, Spotted wing drosophila