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Open Access Research article

Postglacial species displacement in Triturus newts deduced from asymmetrically introgressed mitochondrial DNA and ecological niche models

Ben Wielstra12* and Jan W Arntzen1

Author Affiliations

1 Naturalis Biodiversity Center, P.O. Box 9517, 2300 RA, Leiden, The Netherlands

2 Faculty of Geo-Information Science and Earth Observation – ITC, University of Twente, P.O. Box 6, 7500 AA, Enschede, The Netherlands

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BMC Evolutionary Biology 2012, 12:161  doi:10.1186/1471-2148-12-161

Published: 30 August 2012

Additional files

Additional file 1:

Sampling.Triturus karelinii and T. macedonicus localities included in the genetic analysis (a subset) and in ecological niche modelling (all).

Format: XLS Size: 79KB Download file

This file can be viewed with: Microsoft Excel Viewer

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Additional file 2:

Triturus macedonicusmitochondrial DNA structuring. A phylogenetic tree and haplotype network for T. macedonicus and a spatial visualization of the distribution of groups of haplotypes.

Format: PDF Size: 569KB Download file

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Open Data

Additional file 3:

List of mitochondrial DNA haplotypes. For each mitochondrial DNA haplotype, GenBank accession number and frequency of occurrence in both Triturus macedonicus and T. karelinii is provided. tested against a null model.

Format: XLS Size: 34KB Download file

This file can be viewed with: Microsoft Excel Viewer

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Additional file 4:

Ecological niche modeling performance. The ecological niche models for Triturus macedonicus and T. karelinii tested against a null model.

Format: PDF Size: 185KB Download file

This file can be viewed with: Adobe Acrobat Reader

Open Data

Additional file 5:

Contribution of bioclimatic variables to the ecological niche models. Response curves, contribution and permutation importance and results of a jackknife test for the bioclimatic variables.

Format: PDF Size: 89KB Download file

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Additional file 6:

Differences between the current and mid-Holocene climate layers. For each of the bioclimatic values used in the ecological niche modeling, cells with a higher value under current climate compared to the mid-Holocene are shown in red and cells with a lower value in blue.

Format: PDF Size: 1.8MB Download file

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Open Data