title: The Wide Potential Trophic Niche of the Asiatic Fruit Fly Drosophila suzukii: The Key of Its Invasion Success in Temperate Europe?
abstract: The Asiatic fruit fly Drosophila suzukii has recently invaded Europe and North and South America, causing severe damage to fruit production systems. Although agronomic host plants of that fly are now well documented, little is known about the suitability of wild and ornamental hosts in its exotic area. In order to study the potential trophic niche of D. suzukii with relation to fruit characteristics, fleshy fruits from 67 plant species were sampled in natural and anthropic ecosystems (forests, hedgerows, grasslands, coastal areas, gardens and urban areas) of the north of France and submitted to experimental infestations. A set of fruit traits (structure, colour, shape, skin texture, diameter and weight, phenology) potentially interacting with oviposition choices and development success of D. suzukii was measured. Almost half of the tested plant species belonging to 17 plant families allowed the full development of D. suzukii. This suggests that the extreme polyphagy of the fly and the very large reservoir of hosts producing fruits all year round ensure temporal continuity in resource availability and contribute to the persistence and the exceptional invasion success of D. suzukii in natural habitats and neighbouring cultivated systems. Nevertheless, this very plastic trophic niche is not systematically beneficial to the fly. Some of the tested plants attractive to D. suzukii gravid females stimulate oviposition but do not allow full larval development. Planted near sensitive crops, these "trap plants" may attract and lure D. suzukii, therefore contributing to the control of the invasive fly.
authors.affiliation: Unité Ecologie et Dynamiques des Systèmes Anthropisés (FRE-CNRS 3498), Université de Picardie Jules Verne, Amiens, France.|Laboratoire de Biométrie et Biologie Evolutive (UMR-CNRS 5558), Université Claude Bernard Lyon 1, Villeurbanne, France.
authors.forename: Mathilde
authors.initials: M
authors.lastname: Poyet
authors.affiliation: Unité Ecologie et Dynamiques des Systèmes Anthropisés (FRE-CNRS 3498), Université de Picardie Jules Verne, Amiens, France.
authors.forename: Vincent
authors.initials: V
authors.lastname: Le Roux
authors.affiliation: Laboratoire de Biométrie et Biologie Evolutive (UMR-CNRS 5558), Université Claude Bernard Lyon 1, Villeurbanne, France.
authors.forename: Patricia
authors.initials: P
authors.lastname: Gibert
authors.affiliation: Unité Ecologie et Dynamiques des Systèmes Anthropisés (FRE-CNRS 3498), Université de Picardie Jules Verne, Amiens, France.|Groupe d'étude des milieux estuariens et littoraux (GEMEL) Picardie, Maison de l'Université de Picardie Jules Verne, Saint Valery-Sur-Somme, France.
authors.forename: Antoine
authors.initials: A
authors.lastname: Meirland
authors.affiliation: Unité Ecologie et Dynamiques des Systèmes Anthropisés (FRE-CNRS 3498), Université de Picardie Jules Verne, Amiens, France.
authors.forename: Geneviève
authors.initials: G
authors.lastname: Prévost
authors.affiliation: Unité Ecologie et Dynamiques des Systèmes Anthropisés (FRE-CNRS 3498), Université de Picardie Jules Verne, Amiens, France.
authors.forename: Patrice
authors.initials: P
authors.lastname: Eslin
authors.affiliation: Unité Ecologie et Dynamiques des Systèmes Anthropisés (FRE-CNRS 3498), Université de Picardie Jules Verne, Amiens, France.
authors.forename: Olivier
authors.initials: O
authors.lastname: Chabrerie
mesh_terms: D000818:Animals; D018556:Crops, Agricultural; D004330:Drosophila / Q000472:pathogenicity / Q000502:physiology*; D017753:Ecosystem; D005060:Europe; D005638:Fruit / Q000737:chemistry; D007300:Insect Control; D058865:Introduced Species; D010944:Plants / Q000469:parasitology; D013020:South America; D013696:Temperature