Table 1.
Genetic diversity and bottleneck signatures per genetic population (as determined by STRUCTURE).
| Population | Sample size | Ar (SD) | Ho (SD) | M-ratio (SD) | Fis (SD) | Private Alleles | Locihet-exc | Sign test p-value | Standardized differences test p-value | Wilcoxon test p-value |
|---|---|---|---|---|---|---|---|---|---|---|
| South Shetlands | 197 | 6.448 (2.555) | 0.719 (0.197) | 0.836 (0.185) | 0.011 (0.046) | 13 | 31 | 0.004 | <0.001 | <0.001 |
| South Georgia | 1042 | 6.235 (2.506) | 0.716 (0.208) | 0.813 (0.200) | 0.010 (0.025) | 19 | 34 | <0.0001 | <0.0001 | <0.0001 |
| Bouvetøya | 396 | 5.963 (2.470) | 0.703 (0.223) | 0.825 (0.195) | 0.014 (0.047) | 8 | 30 | 0.010 | <0.0001 | <0.0001 |
| Marion Island & Crozet Islands | 184 | 6.279 (2.586) | 0.719 (0.215) | 0.830 (0.170) | 0.004 (0.044) | 2 | 31 | 0.004 | <0.001 | <0.001 |
| Kerguelen Islands & Heard Island & Macquarie Island | 181 | 5.578 (2.187) | 0.688 (0.213) | 0.831 (0.187) | 0.006 (0.077) | 7 | 28 | 0.050 | 0.021 | 0.019 |
Rarefied allelic richness (Ar), observed heterozygosity (Ho), M-ratio and inbreeding coefficient Fis given as means and standard deviations (SD) across 39 loci. The numbers of private alleles are summed across loci. The number of loci with heterozygosity excess (locihet-exc) and bottleneck test probabilities (Sign test, standardized differences tests and Wilcoxon test) are given under the two-phase model with 80% single-step mutations (TPM80) based on 1,000 iterations for each population.