Genetic differentiation in two European tree frog (Hyla arborea) metapopulations in contrasted landscapes of Western Switzerland

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Etat: Serval
Version: de l'auteur
ID Serval
serval:BIB_19A86CE8E8F7
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Genetic differentiation in two European tree frog (Hyla arborea) metapopulations in contrasted landscapes of Western Switzerland
Périodique
Amphibia-Reptilia
Auteur(s)
Dubey S., Ursenbacher S., Pellet J., Fumagalli L.
ISSN
0173-5373
Statut éditorial
Publié
Date de publication
2009
Peer-reviewed
Oui
Volume
30
Numéro
1
Pages
127-133
Langue
anglais
Résumé
The survival of threatened species as the European tree frog (Hyla arborea) is strongly dependent on the genetic variability within populations, as well as gene flow between them. In Switzerland, only two sectors in its western part still harbour metapopulations. The first is characterised by a very heterogeneous and urbanized landscape, while the second is characterised by a uninterrupted array of suitable habitats. In this study, six microsatellite loci were used to establish levels of genetic differentiation among the populations from the two different locations. The results show that the metapopulations have: (i) weak levels of genetic differentiation (FST within metapopulation ≈ 0.04), (ii) no difference in levels of genetic structuring between them, (iii) significant (p = 0.019) differences in terms of genetic diversity (Hs) and observed heterozygozity (Ho), the metapopulation located in a disturbed landscape showing lower values. Our results suggest that even if the dispersal of H. arborea among contiguous ponds seems to be efficient in areas of heterogeneous landscape, a loss of genetic diversity can occur.
Mots-clé
AMPHIBIANS, CONSERVATION, FRAGMENTATION, HYLIDAE, MICROSATELLITE MARKERS
Web of science
Open Access
Oui
Création de la notice
28/07/2008 16:05
Dernière modification de la notice
08/05/2019 15:11
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