Annie-Ève Gagnon, Ph.D.

Research scientist

Dr. Gagnon's work helps to predict the impacts of abiotic stress on the development of crop pests, the damage they can cause, and the effectiveness of biological control under extreme climatic conditions. This research will optimize biological control programs in the horticultural sector to reduce the use of pesticides.

Agriculture and Agri-Food Canada

430 Gouin Blvd, Saint-Jean-sur-Richelieu, Quebec

Current research and/or projects

Biological control: effect of climatic extremes on the effectiveness of biological control agents.

Climate change: potential distribution of crop pests, risk of establishment for new exotic species, host plant-pest synchronism.

Insect population genetics and dynamics: trophic interactions, migratory patterns and virulence profile.

Research and/or project statements

Optimization of IPM program against the second generation of the carrot weevil
Conceptualization and validation of sub-optimal temperature effects on trophic interactions in horticultural crops
Identification of reliable bio-indicators to measure crop resilience and to characterize the impact of management practices on soil biodiversity and eco-services

Scientific publications

Bessette M, T Ste-Croix D, Brodeur J, Mimee B, Gagnon A-È. 2022. Population genetic structure of the carrot weevil (Listronotus oregonensis) in North America. Evolutionary Applications, 15: 300-315 https://doi.org/10.1111/eva.13343

Gagnon A-È, Boivin G & Blatt S. 2021. Response of carrot weevil (Listronotus oregonensis) to different host-plant essential oils. Crop Protection, 149: 105763. https://doi.org/10.1016/j.cropro.2021.105763

Stirnemann A, Gagnon A-È, Labrie G & Lucas É. 2020. Specific composition, seasonal abundance, and influence of abiotic factors on stinkbugs [Hemiptera: Pentatomidae] in pea field in Québec. Phytoprotection, 100(1): 5–15. https://doi.org/10.7202/1072867ar

Labrie G, Gagnon A-È, Vanasse A, Latraverse A & Tremblay G. 2020. Impacts of neonicotinoid seed treatments on soil-dwelling pest populations and agronomic parameters in corn and soybean in Quebec (Canada). PLOS ONE, 15(2): e0229136. https://doi.org/10.1371/journal.pone.0229136

Gagnon A-È, Bourgeois G, Bourdages L, Grenier P & Blondlot A. 2019. Impact of climate change on Ostrinia nubilalis (Lepidoptera: Crambidae) phenology and its implications on pest management. Agricultural and Forest Entomology, 21: 253-264. https://doi.org/10.1111/afe.12327

Gagnon A-È, Boivin G, Bélair G & Mimee B. 2019. Prevalence of a nematode castrator of the carrot weevil and impact on fecundity and survival. Parasitology, 146: 702-707. https://doi.org/10.1017/S0031182018002056

Dauphinais N, Vandal M, Gagnon A-È, Bélair G, Véronneau P-Y, & Mimee B. 2017. Development and application of a multiplex qPCR method for the simultaneous detection and quantification of Pratylenchus alleni and P. penetrans in Quebec, Canada. Plant Disease, 102(5): 970-976. https://doi.org/10.1094/PDIS-08-17-1222-RE

Gagnon, A.-È., Audette, C., Duval, B. & Boisclair, J. 2016. Can the use of Trichogramma ostriniae (Hymenoptera: Trichogrammatidae) to control Ostrinia nubilalis (Lepidoptera: Crambidae) be economically sustainable for processing sweet corn? Journal of Economic Entomology, 110 : 59-66.

Mimee, B., Gagnon, A-È, Colton-Gagnon, K. & Tremblay, É. 2016. Portrait de la situation du nématode à kyste du soya (Heterodera glycines) au Québec (2013-2015). Phytoprotection, 96: 33-42.

Rioux, S., Mimee, B., Gagnon, A.-È. & Hambleton, S. 2015. First report of stripe rust (Puccinia striiformis f. sp. tritici) on wheat in Quebec, Canada, Phytoprotection, 95: 7-9.

Gagnon, A.-È. & Brodeur, J. 2014. Impact of plant architecture and extraguild prey density on intraguild predation in an agroecosystem, Entomologia Experimentalis et Applicata, 152:165-173.

Firlej, A., Gagnon, A.-È., Laurin-Lemay, S. & Brodeur, J. 2012. Diversity and seasonal abundance of carabid beetles in the soybean crop in Québec, Canada, The Canadian Entomologist, 144:542-554.

Gagnon, A.-È., Heimpel, G.E. & Brodeur, J. 2011. The ubiquity of intraguild predation in Coccinellids, PLoS ONE, 6: e28061.

Gagnon, A.-È., Heimpel, G.E. & Brodeur, J. 2011. Prey DNA detection success following digestion by intraguild predators: influence of prey and predator species, Molecular Ecology Resources, 11: 1022-1032.

Key publications

Dumotier, J., Brodeur, J., Gagnon, A.È. (2024). Trophic impacts of a rolled-rye cover crop on the lettuce aphid (Nasonovia ribisnigri) and associated insect fauna in cultivated Histosols. Entomologia Experimentalis et Applicata, [online] 172(3), 215-228. http://dx.doi.org/10.1111/eea.13402
2024 - View publication details
Gagnon A-È. 2024. Le puceron du soya : une histoire à succès. Talk. 3e congrès du Réseau Québécois de Recherche en Agriculture Durable (RQRAD), Québec, Québec, Canada.
2024 - View publication details
Kalboussi M, Cristescu S, Gagnon A-È & Favret C. 2023. The diversity of syrphids (Diptera: Syrphidae) in flower strips within Québec’s lettuce crops. Poster. 150e annual meeting of the Société d’entomologie du Québec, Montréal, Québec, Canada.
2023 - View publication details
Lavoie A, Brodeur J & Gagnon A-È. 2023. La castration parasitaire dans un contexte de lutte biologique pour le contrôle des populations de charançons de la carotte. Poster. 150e annual meeting of the Société d’entomologie du Québec, Montréal, Québec, Canada.
2023 - View publication details
Bannery C, Ménard E, Ostiguy K, Thibodeau D, Gagnon A-È, Bordier C. 2023. Les bio-essais au service de l’évaluation de la sensibilité aux insecticides du charançon de la carotte (Listronotus oregonensis). Poster. 150e annual meeting of the Société d’entomologie du Québec, Montréal, Québec, Canada.
2023 - View publication details
Fraser J, Brodeur J & Gagnon A-È. 2023. Effects of alyssum flower strips on natural enemy diversity and aphid biological control in field lettuce. Talk. 150e annual meeting of the Société d’entomologie du Québec, Montréal, Québec, Canada.
2023 - View publication details
Gagnon A-È, Bush-Beaupré A, Bouroubi Y, Brodeur J, Fortier A-M, Germain M, Korai B, Labrie G, Van Der Heyden H, Bélisle M & Constant P. 2023. Réduire l'utilisation des pesticides dans les cultures maraîchères par la diversité végétale, la prédiction du risque et la tolérance des consommateurs: preuve de concept avec la culture de la laitue. Affiche. Congrès Annuel du RQRAD, Lévis, Québec, Canada.
2023 - View publication details
Gagnon A-È, Bessette M, T. Ste-Croix D, Brodeur J, Mimee B. 2022. Do geographical distance and host plant species affect the population genetic structure of the carrot weevil (Listronotus oregonensis) in North America? Présentation orale. 2022 Entomological Society of America, Entomological Society of Canada and Entomological Society of British-Columbia joint annual meeting, Vancouver, British-Columbia, Canada.
2022 - View publication details
Bush-Beaupré A, Gagnon A-È, Bouroubi Y, Brodeur J, Fortier A-M, Germain M, Korai B, Labrie G, Van Der Heyden H, Bélisle M. 2022. Réduire l'utilisation des pesticides dans les cultures maraîchères par la diversité végétale et génétique, la prédiction du risque et la tolérance des consommateurs : preuve de concept avec la culture de la laitue. Affiche. 149e Réunion annuelle de la Société d’entomologie du Québec, Granby, Qc. Canada.
2022 - View publication details
Gagnon AE, Dumotier J, Brodeur J, Fortier AM & Bélec C (2022). Impact des paillis végétaux sur les insectes dans la production de laitue et d’oignon. Journées horticoles et grandes cultures 2022 Saint-Rémi, Qc, Canada.
2022 - View publication details
Dumotier J, Brodeur J & Gagnon A-È. 2021. Trophic impacts of a rolled-rye mulch on the lettuce aphid (Nasonovia ribisnigri) and the predatory midge (Aphidoletes aphidimyza) in lettuce grown in organic soils. 2021 Entomological Society of America, Denver.
2021 - View publication details
Dumotier J, Brodeur J & Gagnon A-È. 2021. Impacts trophiques d’un paillis de seigle roulé sur le puceron de la laitue (Nasonovia ribisnigri) en sol organique. 148e Réunion annuelle de la Société d’entomologie du Québec, virtual.
2021 - View publication details
Gagnon A-È, Bourgeois G & Blatt S. 2020. Host plant and other volatiles for attraction of carrot weevil, Listronotus oregonensis. Entomological Society of America, virtual.
2020 - View publication details
Saguez J & Gagnon A-È. 2020. Changements climatiques et grandes cultures au Québec: Impacts et défis à relever pour une bonne gestion intégrée. Symposium Ouranos.
2020 - View publication details
Bessette M, Brodeur J & Gagnon A-È. 2019. Les populations du charançon de la carotte développent-elles une préférence à leur plante hôte locale? Société d’entomologie du Québec, Drummondville, Qc, Canada
2019 - View publication details
Gagnon A-È, Mimee B, Boivin G & Bélair G. 2019. La contraception parasitaire chez le charançon de la carotte. Société d’entomologie du Québec, Drummondville, Qc, Canada.
2019 - View publication details
Bourgeois G, Gagnon A-È, Fortier A-M, Thibodeau D, Plouffe D & Boivin G. 2019. Charançon de la carotte: Modèles bioclimatiques permettant de prédire l’activité de ponte des adultes d’été. Société d’entomologie du Québec, Drummondville, Qc, Canada.
2019 - View publication details
Gagnon A-È & Bourgeois G. 2019. Development of a second generation for the carrot weevil (Listronotus oregonensis) in the province of Quebec, Canada. Entomological Society of America, St. Louis, Missouri, USA.
2019 - View publication details
Bessette M, Brodeur J & Gagnon A-È. 2019. Les populations du charançon de la carotte développent-elles une préférence à leur plante hôte locale? Centre SÈVE & Société de Protection des Plantes du Québec, Bromont, Qc, Canada.
2019 - View publication details
Gagnon A-È & Bourgeois G. 2019. Increased voltinism in carrot weevil under a warmer climate. Joint meeting of the Canadian Society for Ecology & Evolution, the Entomological Society of Canada, and the Acadian Entomological Society, Fredericton, New Brunswick, Canada.
2019 - View publication details