Figure 1

Geographical distribution of the sampled populations (solid red five-pointed stars represent the sampling locations). The map in the background has been generated by R package ‘ggmap’ (https://cran.r-project.org/web/packages/ggmap/)10.

Geographical distribution of the sampled populations (solid red five-pointed stars represent the sampling locations). The map in the background has been generated by R package ‘ggmap’ (https://cran.r-project.org/web/packages/ggmap/)10.