Toxicity of Selected Insecticides to<i>Catolaccus hunteri</i>(Hymenoptera: Pteromalidae) in the Laboratory

Schuster, David J.; Thompson, Steven D.

doi:10.1653/024.094.0454

Cited by 2 publications

(2 citation statements)

References 10 publications

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“…High adult female P. vindemiae mortality occurred in our trials when the adult parasitoids were exposed to spinosad‐treated host puparia. These data support the many published studies that have demonstrated high adult hymenopteran parasitoid mortality post‐contact with spinosads (Williams et al., ; Biondi et al., ), including those that involved other Pteromalidae adults (Schuster & Thompson, ). The adult exposure may have been through surface contact with the treated D. suzukii pupae or through ingestion from host‐feeding.…”

Section: Discussionsupporting

confidence: 88%

Limited protection of the parasitoid Pachycrepoideus vindemiae from Drosophila suzukii host‐directed spinosad suppression

Cossentine

Ayyanath

2017

Entomologia Exp Applicata

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Laboratory trials were conducted to determine whether the spotted wing drosophila, Drosophila suzukii (Matsumura) (Diptera: Drosophilidae), puparium can provide an effective physical barrier to protect immature stages of the pupal parasitoid Pachycrepoideus vindemiae (Rondani) (Hymenoptera: Pteromalidae) from spinosad treatments. Spinosad insecticides are currently an important suppression strategy for D. suzukii in organically managed fruit orchards although they are well known to cause mortality in hymenopteran parasitoids. High adult P. vindemiae female mortality (83%) occurred within 24 h of exposure to D. suzukii pupae treated with 10 mg a.i. l−1 spinosad and female parasitoids did not avoid the pupae treated with similar low levels of spinosad in choice tests that included untreated pupae. Pachycrepoideus vindemiae develops as an idiobiont ectoparasitoid on host fly pupa within the sclerotized host puparium. Significant P. vindemiae survival and emergence was recorded when parasitized D. suzukii puparia were exposed to field treatment levels of spinosad; however, the parasitoid survival was dependent on the time of the spinosad treatment of the host post‐parasitization. Significant parasitoid survival occurred when the host puparia were treated at 2 weeks when the parasitoid was in the pupal stage but did not occur when the host puparia were treated at 1 week post‐parasitization, when the parasitoids were still in a larval stage. The parasitoid adults consumed or otherwise came in contact with residual degrading spinosad when they exited the treated host, and consequently high and low adult parasitoid mortality occurred when the adults emerged from puparia treated at 2 and 1 week(s), respectively. Our study indicates that generally the integration of P. vindemiae parasitism into a sustainable D. suzukii management program is not compatible with spinosad treatments, although P. vindemiae in the pupal stage inside sclerotized host puparia appear to be minimally impacted by spinosad treatments, provided that the spinosad degrades before parasitoid emergence.

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Section: Discussionsupporting

confidence: 88%

Limited protection of the parasitoid Pachycrepoideus vindemiae from Drosophila suzukii host‐directed spinosad suppression

Cossentine

Ayyanath

2017

Entomologia Exp Applicata

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“…Se ha observado que el metomilo es altamente tóxico para todos los estados de desarrollo de los parasitoides Diglyphus intermedius y Neochrysocharis diastatae (Hymenoptera: Eulophidae), parasitoides de la mosca minadora Liriomyza trifolii (Diptera: Agromyzidae) (SCHUSTER, 1994). En el parasitoide Catolaccus hunteri (Hymenoptera: Pteromalidae) se ha visto una alta toxicidad al metomilo en comparación a otros cinco insecticidas seleccionados (SCHUSTER; THOMPSON, 2011). En el adulto parasitoide Microplitis croceipes (Hymenoptera: Braconidae), el metomilo fue considerado extremadamente tóxico (ELZEN et al, 1987).…”

Section: Discussionunclassified

Acute and Chronic Toxicity of Methomyl and Lantana Camara (Verbenaceae) to Five Biological Control Agents of Agriculture Pest in Peru

Iannacone

Alvariño

Rosa

et al. 2014

Boletim Do Observatório Ambiental Alberto Ribeiro Lamego

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Toxicity of Selected Insecticides toCatolaccus hunteri(Hymenoptera: Pteromalidae) in the Laboratory

Cited by 2 publications

References 10 publications

Limited protection of the parasitoid Pachycrepoideus vindemiae from Drosophila suzukii host‐directed spinosad suppression

Limited protection of the parasitoid Pachycrepoideus vindemiae from Drosophila suzukii host‐directed spinosad suppression

Acute and Chronic Toxicity of Methomyl and Lantana Camara (Verbenaceae) to Five Biological Control Agents of Agriculture Pest in Peru

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