Restricted dispersal and genetic diversity in populations of an endangered montane lizard (Eulamprus leuraensis, Scincidae).

Détails

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Etat: Public
Version: de l'auteur
ID Serval
serval:BIB_4EA961F15CDF
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Restricted dispersal and genetic diversity in populations of an endangered montane lizard (Eulamprus leuraensis, Scincidae).
Périodique
Molecular Ecology
Auteur(s)
Dubey S., Shine R.
ISSN
1365-294X (Electronic)
ISSN-L
0962-1083
Statut éditorial
Publié
Date de publication
2010
Volume
19
Numéro
5
Pages
886-897
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Résumé
Many alpine species are under threat from global climate change, as their geographic ranges become increasingly fragmented and unsuitable. Understanding rates and determinants of gene flow among such fragmented populations, over historical as well as recent timescales, can help to identify populations under threat. It is also important to clarify the degree to which loss of local populations reduces overall genetic diversity within the taxon. The endangered Blue Mountains Water Skink (Eulamprus leuraensis) is restricted to <40 small swamps in montane south-eastern Australia. Our analyses of seven microsatellite loci of 241 animals from 13 populations show strong geographic structure, with major genetic divergence even between populations separated by <0.5 km. Dispersal between populations is scarce, and appears to involve mostly males. Our analyses suggest potential recent bottleneck events in all the identified populations, and lower genetic diversity and population size parameter at lower-elevation sites than at higher-elevation sites. Management of this endangered taxon thus needs to treat most populations separately, because of their genetic distinctiveness and low rates of genetic exchange.
Mots-clé
Animals, Bayes Theorem, Female, Gene Flow, Genetic Variation, Genetics, Population, Geography, Lizards/genetics, Male, Microsatellite Repeats, Models, Genetic, Mutation, Sequence Analysis, DNA, South Australia
Pubmed
Création de la notice
18/10/2011 12:11
Dernière modification de la notice
20/08/2019 14:04
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