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Spinks, P. Q., Thomson, R. C., & Shaffer, B. H. (2014). The advantages of going large: Genome wide snps clarify the complex population history and systematics of the threatened western pond turtle. Molecular Ecology, (accepted). 
Added by: Sarina Wunderlich (06 Jul 2014 16:17:23 UTC)
Resource type: Journal Article
DOI: 10.1111/mec.12736
BibTeX citation key: Spinks2014
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Categories: General
Keywords: Genetik - genetics, Podocnemididae, Podocnemis expansa, Schildkröten - turtles + tortoises
Creators: Shaffer, Spinks, Thomson
Collection: Molecular Ecology
Views: 14/366
Views index: 27%
Popularity index: 6.75%
Abstract     
As the field of phylogeography has matured, it has become clear that analyses of one or a few genes may reveal more about the history of those genes than the populations and species that are the targets of study. To alleviate these concerns, the discipline has moved toward larger analyses of more individuals and more genes, although little attention has been paid to the qualitative or quantitative gains that such increases in scale and scope may yield. Here, we increase the number of individuals and markers by an order of magnitude over previously published work to comprehensively assess the phylogeographic history of a well-studied declining species, the western pond turtle (Emys marmorata). We present a new analysis of 89 independent nuclear SNP markers and one mitochondrial gene sequence scored for rangewide sampling of >900 individuals, and compare these to smaller scale, rangewide genetic and morphological analyses. Our enlarged SNP data fundamentally revises our understanding of evolutionary history for this lineage. Our results indicate that the gains from greatly increasing both the number of markers and individuals are substantial and worth the effort, particularly for species of high conservation concern such as the pond turtle, where accurate assessments of population history are a prerequisite for effective management.
Added by: Sarina Wunderlich  
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