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Communication Dans Un Congrès Année : 2023

Invasive success of Drosophila suzukii: Is Wolbachia playing a role?

Résumé

Invasive species constitute a worldwide issue, jeopardizing biodiversity and engendering important economic losses. A better understanding of how they can establish under envi- ronmental conditions that are different from those they encounter in their native range is necessary. Drosophila suzukii is an invasive pest worldwide, originating from Asia. Because of its impressive abilities to develop in new environments, it became a precious model or- ganism to understand invasive success. Among the traits that may have contributed to its success are (1) a highly polyphagous diet allowing the fly to develop within several fruits species all year round; and (2) the female’s ability to lay eggs in healthy fruits, a niche ne- glected by other Drosophilidae. Moreover, D. suzukii hosts the Wolbachia strain wSuz, the role of which is still under study. Hypotheses include towards a mutualistic role. We con- ducted experiments to better understand how Wolbachia affects D. suzukii fitness, thermal biology and metabolism. In stressful conditions (e.g., fluctuant thermal regime, diet change), flies infected with Wolbachia had a higher survival, a lower thermal preference and a lower metabolic rate. This presentation questions wether wSuz played a role in D. suzukii invasive success, specifically linked with its polyphagy and thermal preference.
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Dates et versions

hal-04095733 , version 1 (12-05-2023)

Identifiants

  • HAL Id : hal-04095733 , version 1

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Gwenaëlle Deconninck, Vincent Foray, Sylvain Pincebourde. Invasive success of Drosophila suzukii: Is Wolbachia playing a role?. REID, May 2023, Poitiers, France. ⟨hal-04095733⟩
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