Macroecological patterns of fruit infestation rates by the invasive fly <i>Drosophila suzukii</i> in the wild reservoir host plant <i>Sambucus nigra</i>

Ulmer, Romain; Couty, Aude; Eslin, Patrice; Catterou, Manuella; Baliteau, Lucas; Bonis, Anne; Borowiec, Nicolas; Colinet, Hervé; Delbac, Lionel; Dubois, Françoise; Estoup, Arnaud; Froissard, Joris; Gallet‐Moron, Emilie; Gard, Benjamin; Raepsaet, Georges; Gibert, Patricia; Goff, Isabelle Le; Lemauviel‐Lavenant, Servane; Loucougaray, Grégory; Michelot‐Antalik, Alice; Odoux, Jean‐Francois; Pincebourde, Sylvain; Rode, Nicolas O.; Thaon, Marcel; Till–Bottraud, Irène; Chabrerie, Olivier

doi:10.1111/afe.12520

Cited by 8 publications

(5 citation statements)

References 109 publications

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“…This threshold is particularly appropriate for the study of temporal synchrony between flies and plant resources (Iler et al, 2013). It was also selected as several Drosophila species are known to be active at very low temperatures (<5°C) during winter days (January–February in Amiens and Bordeaux, Ulmer et al, 2022). Cumulative precipitation between 1 January 2021 and the date of sampling was also calculated from daily precipitation values.…”

Section: Methodsmentioning

confidence: 99%

“…At the regional scale, climatic and microclimatic conditions influence their presence. In particular, temperature and precipitation patterns affect thermal limits and desiccation tolerance (Hoffman, 2010; Kellerman et al, 2009; Ulmer et al, 2022). At a finer scale, landscape composition, that is, the cover of natural and anthropic habitats surrounding a site, is a key driver of their diversity and abundance (Delbac et al, 2020; Furtado & Martins, 2018; Poppe et al, 2016; Wen et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

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Fallen fruit: A backup resource during winter shaping fruit fly communities

Deconninck,

Boulembert,

Eslin

et al. 2024

Agri and Forest Entomology

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Fallen fruits provide important feeding and breeding substrates for insects such as Drosophilidae and can be a potential trophic reservoir when usual host fruits become scarce. Recently, two invasive fruit fly species, Drosophila suzukii and Chymomyza amoena, have become established in Europe and are expected to alter existing Drosophilidae communities. In this study, carried out between September 2021 and April 2022 in northern France, we aimed to disentangle the relative roles of microclimatic, landscape and local factors driving the diversity of the Drosophilidae community in decaying fruit across seasons. Minimum site temperature during the week preceding sampling and the proportion of rotten fruit tissue had the strongest positive influence on Drosophilidae abundance and species richness. Drosophilidae abundance also increased with urbanisation (portion of building cover) around the sampled trees. Decaying apples were important breeding sites for C. amoena across seasons, but provided a suboptimal substrate for D. suzukii, which was only present in late summer. This study sheds light on the important role of unharvested fallen crop fruit in maintaining the diversity of an insect family that is generally overlooked in field studies. It also emphasises the importance of considering multiple scales and factors when studying the interactions between invasive species, native species and their shared trophic resources. Finally, our data highlight the importance of the Drosophilidae community in recycling agricultural waste.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fallen fruit: A backup resource during winter shaping fruit fly communities

Deconninck,

Boulembert,

Eslin

et al. 2024

Agri and Forest Entomology

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“…The right time is also important. For example, a mismatch can occur between the phenology of invasive fruit flies and the fruiting period of their host plants, depending on their location along latitudinal gradients (Ulmer et al 2022). Phenology and stochasticity are crucial to invasion success, but do not matter if the right species is never initially sampled for introduction (Fig.…”

Section: Invasion Timeline and Related Hypothesesmentioning

confidence: 99%

“…Contrastingly, increasing temperature can also have indirect negative effects on alien species. For example, warming could reduce the fruit production of native plants on which the invasive fruit fly D. suzukii feeds and reproduces (Ulmer et al 2022). Alien species adapted to urban areas may have an advantage as the global climate changes (urban climate; URCLM, Borden and Flory 2021) because urban areas tend to be warmer and drier than surrounding regions, so populations adapted to these areas may be more able to establish in novel environments because of preadaptation (preadaptation; PREAD).…”

Section: Future Considerations In Invaded Ecosystems: Invasion Debt A...mentioning

confidence: 99%

A synthesis of biological invasion hypotheses associated with the introduction–naturalisation–invasion continuum

Daly

Chabrerie

Massol

et al. 2023

Oikos

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With the advent of the Anthropocene, biological invasions have reached an unprecedented level, and the number of species introductions is still increasing in an everchanging world. Despite major advances in invasion science, significant debate and lack of clarity remain surrounding the determinants of success of introduced species, the magnitude and dimensions of their impact, and the mechanisms sustaining successful invasions. Empirical studies show divergent impacts of alien populations on ecosystems and contrasting effects of biotic and abiotic factors on the dynamics of alien populations, which hinders the creation of a unified theory of biological invasions. Compounding these issues is the plethora of hypotheses that aim to explain invasion success, which can be unclear and contradictory. We propose a synthesis that categorizes hypotheses along a timeline of invasion. We sorted invasion hypotheses along the invasion timeline, and considered population, community and ecosystem levels. This temporal sorting of invasion concepts shows that each is relevant at a specific stage of

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“…This ability makes D. suzukii an important pest of soft and thin-skinned crops, resulting in signi cant economic losses for fruit growers (Walsh et al 2011). Being highly polyphagous, the y exploits a wide variety of cultivated (e.g., red berry, cherry, plum, peach, grape; Walsh et al 2011) and wild fruits (e.g., elderberry, mistletoe, wild black cherry; Poyet et al Ulmer et al 2022), ensuring its persistence year-round (Poyet et al 2015). However, this polyphagy exposes the y to diets of differing quality, which results in various effects on its development (Poyet et al 2015).…”

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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Macroecological patterns of fruit infestation rates by the invasive fly Drosophila suzukii in the wild reservoir host plant Sambucus nigra

Cited by 8 publications

References 109 publications

Fallen fruit: A backup resource during winter shaping fruit fly communities

Fallen fruit: A backup resource during winter shaping fruit fly communities

A synthesis of biological invasion hypotheses associated with the introduction–naturalisation–invasion continuum

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

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