Statistical parsimony (95%) network for Campostoma ornatum S7 nuclear gene haplotypes. Networks were calculated (a) by treating heterozygous variable sites as unknown data and (b) using reconstructed haplotypes for each allele. Circle size reflects the frequency of each haplotype. Solid lines connecting each pair of haplotypes represent a single mutational event, regardless of their length. Red lines represent indel variation. Small black rectangles represent missing or theoretical haplotypes. The left ellipse groups haplotypes from Yaqui, Casas Grandes and Mayo River basins. The right ellipse gathers sequences from Conchos and Fuerte River basins. Subnetwork 2 (Nazas-Piaxtla) was the most differentiated and is shadowed in green. Abbreviations correspond to names shown in Table 1. River basin names are listed in parentheses.
Domínguez-Domínguez et al. BMC Evolutionary Biology 2011 11:153 doi:10.1186/1471-2148-11-153