Range expansion of the Bluetongue vector, Culicoides imicola, in continental France likely due to rare wind-transport events

Jacquet Stéphanie, Huber Karine, Pagès Nonito, Talavera Sandra, Burgin Laura E., Carpenter Simon, Sanders Christopher, Dicko Ahmadou Hamady, Djerbal Mouloud, Goffredo Maria, Lhor Youssef, Lucientes Javier, Miranda-Chueca Miguel Angel, Pereira da Fonseca Isabel, Ramilo David, Setier-Rio Marie-Laure, Bouyer Jérémy, Chevillon Christine, Balenghien Thomas, Guis Hélène, Garros Claire. 2016. Range expansion of the Bluetongue vector, Culicoides imicola, in continental France likely due to rare wind-transport events. Scientific Reports, 6 (27247), 14 p.

https://doi.org/10.1038/srep27247

Article de revue ; Article de recherche ; Article de revue à facteur d'impact Revue en libre accès total

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Quartile : Q1, Sujet : MULTIDISCIPLINARY SCIENCES

Résumé : The role of the northward expansion of Culicoides imicola Kieffer in recent and unprecedented outbreaks of Culicoides-borne arboviruses in southern Europe has been a significant point of contention. We combined entomological surveys, movement simulations of air-borne particles, and population genetics to reconstruct the chain of events that led to a newly colonized French area nestled at the northern foot of the Pyrenees. Simulating the movement of air-borne particles evidenced frequent wind-transport events allowing, within at most 36 hours, the immigration of midges from north-eastern Spain and Balearic Islands, and, as rare events, their immigration from Corsica. Completing the puzzle, population genetic analyses discriminated Corsica as the origin of the new population and identified two successive colonization events within west-Mediterranean basin. Our findings are of considerable importance when trying to understand the invasion of new territories by expanding species.

Mots-clés Agrovoc : Culicoides, vecteur de maladie, provenance, génétique des populations, distribution géographique, facteur de risque, vent, surveillance épidémiologique, espèce envahissante, virus bluetongue

Mots-clés géographiques Agrovoc : France, Corse, Espagne, Algérie, Sardaigne, Pyrénées

Mots-clés complémentaires : Culicoides imicola, Émergence

Classification Agris : L72 - Organismes nuisibles des animaux
L73 - Maladies des animaux

Champ stratégique Cirad : Axe 4 (2014-2018) - Santé des animaux et des plantes

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