Fig. 5

Haplotype networks of the ITS reconstructed in HapView using an ML tree. Circles represent haplotypes, with the sector size being proportional to the number of individuals; the lengths of the connecting lines reflect the number of mutations between them. The multicolored circles with letters h-l stand for shared haplotypes CNn1 to CNn6; the monochromatic circles stand for private haplotypes, whose subordinate waterbodies are shown in the legend (Table 1, Additional file 1: Tables S1 and S3)