Fig. 2.

Maps showing the locations of the sites in each river and the environmental DNA (eDNA) detections of anguillid eels (Anguilla japonica and Anguilla marmorata). The presence or absence of eDNA detections are shown as different colored circles. The numbers below each river name indicate the proportion of eDNA detection sites for both species (jap: A. japonica; mar: A. marmorata). (a) Kedo River, (b) Mae River, (c) Atsumari and Mawatari rivers, (d) Hirose and Kubota rivers, (e) Hetsuka River, (f) Fengshan River, (g) Nan-ao South River, and (h) Shuang River. Map scales differ among panels.