Fig. 4
From: The role of isolation on contrasting phylogeographic patterns in two cave crustaceans
Divergence time estimates (x axis in thousands of years) of Asellus aquaticus populations (calculated with a multi-locus coalescent model in *BEAST; outgroups not shown) and the distribution of its populations with relative mtDNA haplotype frequencies throughout Hungary. Phylogenetic and population tree analyses support the inclusion of the cave phenotype as part of the species, but with evident population structuring as a result of the cave environment