Fig. 3From: Unravelling population genetic structure with mitochondrial DNA in a notional panmictic coastal crab species: sample size makes the differencePrincipal Coordinates Analysis (PCoA) plot based on genetic distances (expressed as Φst pairwise values) among Atlantic Ocean (solid triangles), western (solid squares) and eastern (empty squares) Mediterranean Sea, and Black Sea (crosses) populations of Pachygrapsus marmoratus. Each symbol is a population, acronyms are reported in Table 1 Back to article page