Table 3.
Indices of genetic diversity including the mean number of alleles (A), allelic richness (AR), and observed and expected heterozygosity (H o/H e) based on 11 microsatellite loci, as well as nucleotide diversity (π) calculated using species‐specific and concatenated ddRAD datasets (see Table 2) for black scoter, common scotera, surf scoter, white‐winged scoter, and velvet scoter individuals from sampled regions
| Microsatellites | ddRAD | |||||||
|---|---|---|---|---|---|---|---|---|
| A | AR | H o (%) | H e (%) | N | π – single species | π – combined | N | |
| Black scoter | ||||||||
| Alaska | 4.6 | 4.2 | 54.7 | 58.5 | 29 | 0.0035 | 0.0034 | 10 |
| Pacific | – | – | – | – | – | – | ||
| Central | – | – | – | – | 0.0032 | 0.0032 | 10 | |
| Atlantic | 5.6 | 4.8 | 55.2 | 60.0 | 32 | 0.0031 | 0.0030 | 7 |
| Common scoter | ||||||||
| Europe | 4.9 | 4.9 | 62.5 | 62.4 | 19 | 0.0038 | 0.0038 | 5 |
| Surf scoter | ||||||||
| Alaska | 3.9 | 3.9 | 48.2 | 47.7 | 39 | 0.0029 | 0.0028 | 7 |
| Pacific | 4.6 | 4.2 | 49.4 | 49.8 | 68 | 0.0029 | 0.0028 | 14 |
| Central | – | – | – | – | 0.0028 | 0.0028 | 3 | |
| Atlantic | 4.6 | 4.6 | 46.3 | 47.4 | 38 | 0.0029 | 0.0029 | 9 |
| Europe | – | – | – | – | – | – | ||
| White‐winged scoter | ||||||||
| Alaska | 5.3 | 3.3 | 48.4 | 49.9 | 54 | 0.0036 | 0.0035 | 8 |
| Pacific | 4.8 | 3.3 | 45.1 | 48.9 | 40 | 0.0036 | 0.0035 | 10 |
| Central | 5.4 | 3.4 | 47.0 | 49.7 | 42 | 0.0035 | 0.0035 | 10 |
| Atlantic | 3.7 | 3.6 | 51.5 | 53.8 | 9 | – | – | |
| Velvet scoter | ||||||||
| Europe | 3.9 | 3.1 | 45.5 | 47.6 | 20 | 0.0031 | 0.0030 | 4 |
a
Diversity metrics for white‐winged scoter based on microsatellite data are not presented here for nonbreeding and Alberta locales in the Pacific region.