The Rediscovery of a Long Described Species Reveals Additional Complexity in Speciation Patterns of Poeciliid Fishes in Sulfide Springs
Figure 7
Hierarchical cluster analysis of Poecilia populations from sulfidic and non-sulfidic environments based on body shape variation in the lateral and dorsal projections.
Colors denote sulfide-adapted (yellow) and non-adapted (blue) populations of three species, Poecilia thermalis (yellow circles), P. sulphuraria (yellow triangles), and P. mexicana. The shapes represent the drainages (diamonds- Tacotalpa, squares- Puyacatengo, circles- Ixtapangajoya, and triangles- Pichucalco) and the numbers correspond to sites as described in Table 2.