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


Autoria(s): Dubey S.; Ursenbacher S.; Pellet J.; Fumagalli L.
Data(s)

2009

Resumo

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.

Identificador

http://serval.unil.ch/?id=serval:BIB_19A86CE8E8F7

isbn:0173-5373

doi:10.1163/156853809787392775

http://my.unil.ch/serval/document/BIB_19A86CE8E8F7.pdf

http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_19A86CE8E8F73

isiid:000266555400014

Idioma(s)

en

Direitos

info:eu-repo/semantics/openAccess

Fonte

Amphibia-Reptilia, vol. 30, no. 1, pp. 127-133

Palavras-Chave #AMPHIBIANS; CONSERVATION; FRAGMENTATION; HYLIDAE; MICROSATELLITE MARKERS
Tipo

info:eu-repo/semantics/article

article