Figure 5.

The genetic (dis)similarity among populations within the different Triturus species. These are composite maps for all nine Triturus species. For each species, the genetic divergence among populations (Zi) was determined and subsequently interpolated across its distribution range. In Figure 5a we use a single scale for all Triturus species (allowing direct comparison among species) whereas in Figure 5b we use a species specific scale (better expressing genetic structure in genetically relatively poor species). Warmer colors refer to a higher genetic divergence. The insets show the situation for T. cristatus (left) and T. marmoratus (right) in their area of sympatry (shown in dark gray on the main maps).

Wielstra et al. Frontiers in Zoology 2013 10:13   doi:10.1186/1742-9994-10-13
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