A Neighbor Joining phylogeny for the Triturus ND4 haplotypes. The Triturus haplotypes cluster into nine monophyletic mitochondrial DNA lineages, corresponding to species and colored as in Figure 1. Significantly supported branches (≥ 80%, based on a thousand bootstrap replicates) are denoted with an asterisk. The Calotriton asper outgroup used to root the phylogeny is not shown.
Wielstra et al. Frontiers in Zoology 2013 10:13 doi:10.1186/1742-9994-10-13