Interspecific competition in Trichopria anastrephae parasitism (Hymenoptera: Diapriidae) and Pachycrepoideus vindemmiae (Hymenoptera: Pteromalidae) parasitism on pupae of Drosophila suzukii (Diptera: Drosophilidae)

Trichopria anastrephae Lima and Pachycrepoideus vindemmiae (Rondani) naturally occur together with the pest Drosophila suzukii (Matsumura) in Brazil. Due to their co-occurrence, it is important to understand competitive interactions between these pupal parasitoids and how this may impact D. suzukii...

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Bibliographic Details
Published in:Phytoparasitica 2021-04, Vol.49 (2), p.207-215
Main Authors: da Costa Oliveira, Daiana, Stupp, Paloma, Martins, Liliane Nachtigall, Wollmann, Jutiane, Geisler, Fernanda Carla Santos, Cardoso, Taís Dalla Nora, Bernardi, Daniel, Garcia, Flávio Roberto Mello
Format: Article
Language:English
Subjects:
Agriculture
Bioassays
Biomedical and Life Sciences
Competition
Drosophila suzukii
Ecology
Fruit flies
Fruits
Hymenoptera
Insects
Interspecific
Life Sciences
Original Article
Pachycrepoideus vindemmiae
Parasitism
Plant Pathology
Plant Sciences
Pupae
Strawberries
Trichopria anastrephae
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Summary:Trichopria anastrephae Lima and Pachycrepoideus vindemmiae (Rondani) naturally occur together with the pest Drosophila suzukii (Matsumura) in Brazil. Due to their co-occurrence, it is important to understand competitive interactions between these pupal parasitoids and how this may impact D. suzukii parasitism levels. Thus, the aim of the study was to evaluate the interspecific competition between T. anastrephae and P. vindemmiae . Bioassays were performed with and without time advantage, with different exposure (treatments) of D. suzukii pupae to parasitoid species. Verified that there was a higher parasitism and emergence rate of T. anastrephae adults. This was not observed for P. vindemmiae that decreases the parasitism rate in the presence of T. anastrephae . In strawberry fruits bioassay, T. anastrephae females showed capacity to parasitize pupae of D. suzukii inside strawberry fruits. However, P. vindemmiae had a lower parasitism rate and consequently, fewer insects emerged when used alone or associated with the presence of T. anastrephae . Therefore, we can conclude that there is interspecific competition between T. anastrephae and P. vindemmiae in D. suzukii pupae, with T. anastrephae having a higher competitive advantage.
ISSN:0334-2123
1876-7184
DOI:10.1007/s12600-020-00843-2