Herps without borders: a new newt case and a review of transalpine alien introductions in western Europe

Détails

ID Serval
serval:BIB_BBC33872A43D
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Herps without borders: a new newt case and a review of transalpine alien introductions in western Europe
Périodique
Amphibia-Reptilia
Auteur(s)
Dubey S., Lavanchy G., Thiébaud J., Dufresnes C.
ISSN
1568-5381
ISSN-L
0173-5373
Statut éditorial
Publié
Date de publication
2018
Peer-reviewed
Oui
Volume
40
Pages
1-15
Langue
anglais
Résumé
Biogeographic processes have led to different evolutionary taxa occurring in the northern and southern edges of the Alpine Mountains in Western Europe. The integrity of this diversity is being challenged by frequent human-mediated trans-alpine translocations, sometimes leading to biological invasions. Several alien terrestrial vertebrates of south Alpine origins (Italy, Swiss Ticino) are causing damages to native north Alpine fauna. In this paper, we used molecular tools to characterize the understudied case of the Mediterranean smooth newt (Lissotriton vulgaris meridionalis) expanding in the outskirts of Geneva since its introduction before 1975. Mitochondrial and nuclear DNA sequencing suggest that these exotic populations are a mixture between two diverged L. v. meridionalis lineages from central Italy, and traces of potential hybridization with the native L. v. vulgaris was detected. This situation echoes many other trans-alpine alien introductions. We review all comparable cases of southern to northern Alps introductions in vertebrates, including seven reptiles and four amphibians. The majority of south alpine alien lineages were presumably imported voluntarily by enthusiasts and appear to perform better in the disturbed habitats found in the anthropogenic landscapes of Western Europe compared to their native north Alpine counterparts. Most pose serious threats to related species of similar ecology, through direct competition, predation and introgressive hybridization. Difficulties to detect alien species on time lead to significant conservation costs. Better education together with more appropriate and reactive management plans will be necessary to limit the impact of future alien introductions.
Mots-clé
Animal Science and Zoology
Web of science
Création de la notice
01/07/2018 22:40
Dernière modification de la notice
20/08/2019 15:29
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