Geographic distribution of the 37 sampling sites and phylogenetic relationships of the 49 haplotypes found in <i>Triturus carnifex</i>.

<p>A, Maximum likelihood (ML) tree showing the phylogenetic relationships among the 49 haplotypes found in <i>Triturus carnifex</i>. Terminal haplogroups were collapsed. Clade names and bootstrap (bs) values of ML and Maximum parsimony (MP) trees (ML/MP), respectively, are shown above and below each node (grey circles: bs >70%; black circles: bs >85%). B, Statistical parsimony networks, with haplotypes numbered as in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0041754#pone-0041754-t001" target="_blank">Table 1</a>. Circles size is proportional to haplotype frequency; open dots represent missing intermediate haplotypes. C, Geographical distribution of the 37 populations sampled. Populations (shown as pie diagrams) are coloured according to the main haplogroups in panels A and B. White dotted line shows the northern edge of the species' distribution; A, Arno river basin, CS, Crati–Sibari plain, VC, Volturno–Calore river drainage basin. Inset: Geographical location of the study area within the western Palearctic region.