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Behavioral manipulation of Drosophila suzukii for pest control: high attraction to yeast enhances insecticide efficacy when applied on leaves

Rehermann, Guillermo and Spitaler, Urban and Sahle, Karolina and Cossu, Carlo S. and Delle Donne, Lorenz and Bianchi, Flavia and Eisenstecken, Daniela and Angeli, Sergio and Schmidt, Silvia and Becher, Paul (2022). Behavioral manipulation of Drosophila suzukii for pest control: high attraction to yeast enhances insecticide efficacy when applied on leaves. Pest Management Science. 78 :3 , 896-904
[Research article]

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Abstract

BACKGROUND The invasive pest, Drosophila suzukii attacks fresh soft-skinned fruit. Broad-spectrum insecticides are implemented for control but there is a need to reduce environmental risks and insecticide residues on fruits. Hanseniaspora uvarum is a yeast frequently found on ripe fruits and associated with D. suzukii. We aim to exploit the ecological association and attraction of D. suzukii to H. uvarum by developing an attract-and-kill strategy, with spray-application on canopy but not fruit. We therefore investigated D. suzukii attraction, egg-laying and mortality when exposed to insecticidal yeast-based formulations. RESULTS Hanseniaspora uvarum strongly attracted D. suzukii when applied on leaves of grapevine, Vitis vinifera. Notably, this attractiveness was competitive to ripe grape berries that were susceptible to D. suzukii infestation. Moreover, adding H. uvarum enhanced the efficacy of insecticidal formulations against D. suzukii. Flies exposed to leaves treated with yeast-insecticide formulations showed higher mortality and laid a lower number of eggs compared to flies exposed to insecticide alone. In a wind tunnel, all treatments containing H. uvarum alone or in combination with insecticides, caused similar upwind flight and landing at the odor source, which provides evidence that the addition of insecticide did not reduce D. suzukii attraction to yeast. CONCLUSION Hanseniaspora uvarum can be used to manipulate the behavior of D. suzukii by attracting flies to insecticide formulations. Yeast attraction is competitive to grape berries and improves insecticide effectiveness, suggesting that sprays covering canopy only, could reduce residues on fruit without compromising management efficacy.

Authors/Creators:Rehermann, Guillermo and Spitaler, Urban and Sahle, Karolina and Cossu, Carlo S. and Delle Donne, Lorenz and Bianchi, Flavia and Eisenstecken, Daniela and Angeli, Sergio and Schmidt, Silvia and Becher, Paul
Title:Behavioral manipulation of Drosophila suzukii for pest control: high attraction to yeast enhances insecticide efficacy when applied on leaves
Series Name/Journal:Pest Management Science
Year of publishing :2022
Volume:78
Number:3
Page range:896-904
Number of Pages:9
Publisher:JOHN WILEY AND SONS LTD
ISSN:1526-498X
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Keywords:integrated pest management, semiochemicals, spinosad, spotted wing drosophila, viticulture
URN:NBN:urn:nbn:se:slu:epsilon-p-114540
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-114540
Additional ID:
Type of IDID
DOI10.1002/ps.6699
Web of Science (WoS)000719677400001
ID Code:27169
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Protection Biology
Deposited By: SLUpub Connector
Deposited On:21 Feb 2022 15:24
Metadata Last Modified:21 Feb 2022 15:31

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