Summary statistics for samples from a local farm the group of escapees, and a local wild population.

N =  number of samples analysed, Ho and He  =  observed and expected heterozygosity, Fis  =  inbreeding coefficient, HWE  =  number of deviations from Hardy Weinberg equilibrium at two significance levels, LD  =  observed linkage disequilibrium at two significance levels, At  =  total number of alleles observed over 17 polymorphic loci, Ar  =  allelic richness based upon a re-sample size of 36–37 per locus/population combination and then totaled over all loci, Ne  =  effective population size as estimated by the LDNA method [47], with 95% confidence intervals in brackets and based upon including alleles down to and including those with frequencies of 0.005 in each population.