Data/hora: 10/06/2024 11:24:20

Biblioteca(s): | Embrapa Algodão.
Data corrente: | 13/01/2020
Data da última atualização: | 20/01/2020
Autoria: | SILVA, C. S. B. D.; PRICE, B. E.; WALTN, V. M.
Afiliação: | CHERRE SADE BEZERRA DA SILVA, CNPA; Briana Elizabeth Price, Oregon State University/Department of Horticulture; Vaughn M. Walton, Oregon State University/Department of Horticulture.
Título: | Water-Deprived Parasitic Wasps (Pachycrepoideus vindemmiae) Kill More Pupae of a Pest (Drosophila suzukii) as a Water-Intake Strategy.
Ano de publicação: | 2019
Fonte/Imprenta: | Open Access Scientific Reports, v. 9, 2019.
Idioma: | Inglês
Conteúdo: | Most organisms must ingest water to compensate for dehydration. In parasitic wasps, the importance of water and the behaviors driving its consumption are poorly understood. Here, we describe a waterintake strategy of Pachycrepoideus vindemmiae, a parasitoid of spotted-wing drosophila (SWD, Drosophila suzukii). Longevity measurements indicated that P. vindemmiae benefits from drinking water and from host-feeding on the water-rich hemolymph of SWD pupae. After exposing wasps to different water regimens, we observed increased host-feeding in water-deprived wasps despite honey availability. This resulted in greater SWD mortality because the host-feeding process killed the pupae, and because wasps that engaged in greater host-feeding parasitized more hosts. Behavioral observations showed that the host-feeding time of water-deprived wasps doubled compared to water-fed individuals. Host-feeding did not affect parasitoid offspring mortality. We conclude that P. vindemmiae benefits from ingesting water and that it host-feeds on SWD pupae as a water-intake strategy. These are interesting findings not only because water has rarely been reported as a critical nutrient for adult parasitoids, but especially because preying for the purpose of hydration is not a common strategy in nature. This strategy enhances parasitoid survival and reproduction, with positive consequences for its host-killing capacity and potential as a biocontrol agent.
Thesagro: | Hospedeiro; Vespa.
Thesaurus Nal: | Pachycrepoideus vindemmiae; Parasitic wasps; Parasitoids; Water.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/208673/1/Water-Deprived-Parasitic-wasps.pdf
Registro original: | Embrapa Algodão (CNPA)
Exemplares: | CNPA - (28701-1) - UPC - AP - DD -  -  -  - DIS