Section: Zoology
Topic: Agricultural sciences, Applied biological sciences, Population biology

Non-target effects of ten essential oils on the egg parasitoid Trichogramma evanescens

10.24072/pcjournal.212 - Peer Community Journal, Volume 3 (2023), article no. e2.

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Essential oils (EOs) are increasingly used as biopesticides due to their insecticidal potential. This study addresses their non-target effects on a biological control agent: the egg parasitoid Trichogramma evanescens. In particular, we tested whether EOs affected parasitoid fitness either directly, by decreasing pre-imaginal survival, or indirectly, by disrupting parasitoids' orientation abilities. The effect of Anise, Fennel, Sweet orange, Basil, Coriander, Oregano, Peppermint, Mugwort, Rosemary and Thyme EOs were studied on five strains of T. evanescens. Specific experimental setups were developed, and data obtained from image analysis were interpreted with phenomenological models fitted with Bayesian inference. Results highlight the fumigant toxicity of EOs on parasitoid development. Anise, Fennel, Basil, Coriander, Oregano, Peppermint and Thyme EOs are particularly toxic and drastically reduce the emergence rate of T. evanescens. Most EOs also affect parasitoid behavior: (i) Basil, Coriander, Oregano, Peppermint, Mugwort and Thyme EOs are highly repellent for naive female parasitoids; (ii) Anise and Fennel EOs can have repellent or attractive effects depending on strains; and (iii) Sweet orange, Oregano and Rosemary EOs have no detectable impact on orientation behavior. This study shows that EOs fumigation have non-target effects on egg parasitoids. This highlights the need to cautiously precise the deployment framework of biopesticides in an agroecological perspective.

Published online:
DOI: 10.24072/pcjournal.212
Type: Research article

van Oudenhove, Louise 1; Cazier, Aurélie 1; Fillaud, Marine 1; Lavoir, Anne-Violette 1; Fatnassi, Hicham 1, 2; Perez, Guy 1; Calcagno, Vincent 1

1 Institut Sophia Agrobiotech, INRAE, Université Côte d'Azur, CNRS, France
2 International Center for Biosaline Agriculture, Dubai, United Arab Emirates
License: CC-BY 4.0
Copyrights: The authors retain unrestricted copyrights and publishing rights
     author = {van Oudenhove, Louise and Cazier, Aur\'elie and Fillaud, Marine and Lavoir, Anne-Violette and Fatnassi, Hicham and Perez, Guy and Calcagno, Vincent},
     title = {Non-target effects of ten essential oils on the egg parasitoid {\protect\emph{Trichogramma} evanescens}},
     journal = {Peer Community Journal},
     eid = {e2},
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     year = {2023},
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%A van Oudenhove, Louise
%A Cazier, Aurélie
%A Fillaud, Marine
%A Lavoir, Anne-Violette
%A Fatnassi, Hicham
%A Perez, Guy
%A Calcagno, Vincent
%T Non-target effects of ten essential oils on the egg parasitoid Trichogramma evanescens
%J Peer Community Journal
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van Oudenhove, Louise; Cazier, Aurélie; Fillaud, Marine; Lavoir, Anne-Violette; Fatnassi, Hicham; Perez, Guy; Calcagno, Vincent. Non-target effects of ten essential oils on the egg parasitoid Trichogramma evanescens. Peer Community Journal, Volume 3 (2023), article  no. e2. doi : 10.24072/pcjournal.212.

PCI peer reviews and recommendation, and links to data, scripts, code and supplementary information: 10.24072/pci.zool.100124

Conflict of interest of the recommender and peer reviewers:
The recommender in charge of the evaluation of the article and the reviewers declared that they have no conflict of interest (as defined in the code of conduct of PCI) with the authors or with the content of the article.

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