Figure 2: Isolation by distance plots of pairwise population values for log geographic distance and genetic distance.

Genetic distance is given by Slatkin’s linearized φST (φST /(1- φST ) for cytochrome b mtDNA analyses (left column) or Slatkin’s linearized FST (FST/(1−FST) for microsatellite analyses (right column). Note that the scales vary. Analyses were performed for all E. helvum populations (n=12), for continental populations only (n=8), or for island populations only (n=4). Statistical significance was assessed using a Mantel test and P-values are shown where sample size was sufficient to allow testing. Geographic distance is given in km.