Fig. 3

Haplotype networks of C. hangiongensis and C. koreanus based on mtDNA control region (465, 467 bp each). A total of eight and 24 haplotypes were detected in C. hangiongensis and C. koreanus, respectively. The size of the circle is proportional to number of individuals that belong to the respective haplotypes and small white circles denote intermediate haplotypes that are not present in our samples, but are necessary to connect all of the observed haplotypes to the network. Each node in the network represents a single mutational step between haplotypes irrespective of its length. Population abbreviations as in text and Additional file 1: Table S1