La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Active and passive dispersal of an invading land snail in Mediterranean France
Auteurs :	Sebastien Aubry, Auteur ; Corinne Labaune, Auteur ; Frederic Magnin, Auteur ; Philip Roche, Auteur ; Laurence Kiss, Auteur
Type de document :	Article
Dans :	Journal of Animal Ecology (75(3) MAY 2006)
Article en page(s) :	802-813
Résumé :	Land snail dispersal abilities are considered poor; however, the current invasion of the French Mediterranean region by Xeropicta derbentina (Krynicki 1836), as well as the past invasions of this region by several other species, seems to contradict this view. Using a multilevel approach, from individual experimentation to landscape analysis, the dispersal abilities and mechanisms allowing the passive dispersal of X. derbentina are studied. The colonization of Provence occurred by stratified diffusion, where short-range active dispersal occurs side by side with long-range passive dispersal. Active dispersal is not as limited as previously thought. In the field, the capture-mark-recapture method recorded a maximum distance covered of

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