Pairwise estimates of FST and mean individual assignment likelihood (Li→s) for NE American and European populations.

All pairwise FST are significant (pFST are indicated on the lower half of the matrix and Li→s values expressed on a –log scale are indicated on the upper half of the matrix for the European population only. For each European population, the maximum of Li→s are indicated in bold typeface. * indicated the second most likely source of two European populations (Arco and Castelrotto) which were firstly assigned to.The pairwise FST matrix was obtained for all microsatellite loci, by applying ENA correction for null alleles with FreeNA. Most FST pairwise differentiations were significant after correction for multiple comparisons, with the exception of those between Hither Hills1 and Hither Hills2, Geneva1 and Geneva2, Geneva2 and Geneva3, Geneva3 and Dresden, Seyches and Boutiers, Seyches and Couhins, Monhein and Mudaisson; Li→s values, expressed on a –log scale, obtained with the seven loci having no more than 10% null alleles, are indicated in parentheses for the European samples only. For each European sample, the minimum value of –log(Li→s) is indicated in bold typeface and underlined.