Fig.
3. Maps and distributions of eDNA-based phylogenetic groups ofBarbatula toni: (a) map of the Japanese archipelago and
Sakhalin; (b) distributions of eDNA-based phylogenetic groups
of B. toni in Hokkaido. The different colors are described in the
captions of Figs. 1 and 2 and proportions in the two-color circles
indicate the haplotype frequencies in each phylogenetic group. The
numbers are the IDs of the rivers from which the groups were extracted.