Cytotype Affects the Capability of the Whitefly Bemisia tabaci MED Species To Feed and Oviposit on an Unfavorable Host Plant

Benhamou, Sylvain; Rahioui, Isabelle; Henri, Hélène; Charles, Hubert; Silva, Pedro Da; Heddi, Abdelaziz; Vavre, Fabrice; Desouhant, Emmanuel; Calevro, Federica; Mouton, Laurence

doi:10.1128/mbio.00730-21

Cited by 4 publications

(1 citation statement)

References 89 publications

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“…A particularly important factor affecting insect host range is their associated microbiome (Frago et al 2012;Sugio et al 2015;Giron et al 2018). For example, facultative secondary endosymbionts broaden the range of suitable host plants for the white y Bemisia tabaci (Benhamou et al 2021). Associations between microbes and insect hosts can be bene cial or deleterious, facultative or obligatory (Sugio et al 2015; Gurung et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Wolbachia improves the performance of an invasive fly after a diet shift

Deconninck,

Larges,

Henri

et al. 2024

J Pest Sci

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Polyphagy is an adaptative strategy allowing species to develop and survive on multiple diets. Phytophagous insects can be exposed to sub-optimal resources, as host plants vary in nutritional quality. Some insects may rely on symbiotic bacteria to better utilize less favorable substrates. The invasive fruit y Drosophila suzukii is a highly successful pest worldwide. The use of ripening and ripe fruits, a niche neglected by other drosophilids, and its polyphagy may have contributed to its global spread. The role of D. suzukii's Wolbachia strain (wSuz) remains uncon rmed, although a mutualistic role in dealing with abiotic stress has been hypothesized. In some insect species, Wolbachia acts as a nutritional mutualist. This study explored the role of wSuz in D. suzukii adaptation to uctuating diet regimes. To simulate a diet shift, we used Wolbachia-infected and uninfected ies, maintained on a corn-based (lowstarch) or a grape-based (high-starch) diet for at least 10 generations. Then, we placed individuals from each line on one or the other diet for 30 days. The effects of Wolbachia and the diet treatments were assessed by quantifying female fecundity, egg-to-adult development time and survival, and offspring mass. The presence of Wolbachia positively affected female fecundity and offspring mass after a diet shift. Wolbachia also increased survival during larval development regardless of the diet, supporting its mutualistic role. Our results underline the role of wSuz on D. suzukii diet tolerance and performance. A better understanding of the role of symbionts in invasive species could help to improve management strategies. KEY MESSAGEGeneralist phytophagous insects may face diets varying in nutritional quality.Endosymbionts may contribute to better tolerance of diet shifts.The role of Drosophila suzukii's Wolbachia strain (wSuz) is currently uncon rmed.We demonstrate a mutualistic role of wSuz, increasing survival and offspring mass after a diet shift.Understanding the role of symbionts in invasive species could help to improve management strategies.

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