Intraguild species presence alters Aphidoletes aphidimyza (Diptera: Cecidomyiidae) and Aphidius gifuensis (Hymenoptera: Braconidae) foraging responses.

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    • Source:
      Publisher: Oxford University Press Country of Publication: England NLM ID: 2985127R Publication Model: Print Cited Medium: Internet ISSN: 1938-291X (Electronic) Linking ISSN: 00220493 NLM ISO Abbreviation: J Econ Entomol Subsets: MEDLINE
    • Publication Information:
      Publication: 2015- : Oxford : Oxford University Press
      Original Publication: College Park Md : Entomological Society of America
    • Subject Terms:
    • Abstract:
      The predatory gall midge, Aphidoletes aphidimyza (Rondani), and tobacco aphid cocoon wasp, Aphidius gifuensis Ashmead, are important natural enemies of Myzus persicae (Sulzer) (Hemiptera: Aphididae). Predation by A. aphidimyza and A. gifuensis can regulate M. persicae; however, how interspecific interference competition affects their foraging efficiency is unknown. Here, we investigated the consumption and parasitization abilities of A. aphidimyza 3rd instar larva and A. gifuensis adults under various conditions. Consumption of parasitized aphids by A. aphidimyza 3rd instar larvae was significantly lower than that of nonparasitized controls, with a substantial increase in handling time. The presence of A. gifuensis adults did not significantly affect the predation capacity of A. aphidimyza larvae. Relative to controls, A. aphidimyza larvae predation trace (PT) and imago activity significantly decreased A. gifuensis parasitism rates at different aphid densities. Further, A. aphidimyza larvae PT increased the A. gifuensis handling time of M. persicae, whereas the presence of A. aphidimyza adults had the opposite effect. Coexistence with heterospecific natural enemies reduced the parasitic capacity of A. gifuensis, whereas A. aphidimyza larvae predation capability was influenced to a lesser extent. Our results demonstrate that intraguild interactions strongly influence the predatory and parasitic efficacy of A. aphidimyza and A. gifuensis, although the effect on A. gifuensis was more pronounced. For effective biological control of M. persicae using A. aphidimyza and A. gifuensis, we recommend releasing A. aphidimyza first to mitigate intraguild predation and enhance the overall success of the pest control program.
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    • Grant Information:
      2022XM11 Zunyi Branch Tobacco Company; CXTD [2021]004 Guizhou Province Science and Technology Innovation Talent Team Project
    • Contributed Indexing:
      Keywords: Myzus persicae; aphid; biological control; interspecific interaction; intraguild predation
    • Publication Date:
      Date Created: 20240723 Date Completed: 20241014 Latest Revision: 20241014
    • Publication Date:
      20241015
    • Accession Number:
      10.1093/jee/toae159
    • Accession Number:
      39042518