Genetic diversity within populations
The proportion of segregating sites (θW) ranged between 16‰ (Site N.fi, Figure 1) and 48‰ (SE.ro) with an average of 29‰ (Table 1). The average number of pairwise differences (π) ranged between 0.0019 (N.fi) [3] and 0.0041 (S.it), with an average of 0.0030. Observed heterozygosity across populations ranged from 0.0012 (N.fi) to 0.0025 (SE.ro). None of the genetic diversity measurements showed any clear spatial pattern. Inbreeding coefficients (FIS ) were overall low.
Table 1. Overview of nucleotide diversity estimates (mean ± standard deviation) for each of the 12 sampled Clethrionomys glareoluspopulations. Sample size (n), Watterson’s theta (θW), heterozygosity - the proportion of heterozygous genotypes and the average population inbreeding coefficients (FIS ) are displayed.