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. 2017 May 16;7:1972. doi: 10.1038/s41598-017-02059-7

Figure 2.

Figure 2

Minimum spanning trees constructed from mtDNA COI (a) and nrDNA ITS (b) with the sizes of circles proportionally to haplotype/ribotype frequency. The population origins of haplotypes/ribotypes are indicated by colours. Perpendicular tick marks on the lines joining haplotypes/ribotypes represent the number of nucleotide substitutions.