Genetic characterization of Common Eiders breeding in the Yukon-Kuskokwim Delta, Alaska
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Abstract
We assessed population genetic subdivision among four colonies of Common Eiders (Somateria mollissima v-nigrum) breeding in the Yukon-Kuskokwim Delta (YKD), Alaska, using microsatellite genotypes and DNA sequences with differing modes of inheritance. Significant, albeit low, levels of genetic differentiation were observed between mainland populations and Kigigak Island for nuclear intron lamin A and mitochondrial DNA (mtDNA) control region. Intercolony variation in haplotypic frequencies also was observed at mtDNA. Positive growth signatures assayed from microsatellites, nuclear introns, and mtDNA indicate recent colonization of the YKD, and may explain the low levels of structuring observed. Gene flow estimates based on microsatellites, nuclear introns, and mtDNA suggest asymmetrical gene flow between mainland colonies and Kigigak Island, with more individuals on average dispersing from mainland populations to Kigigak Island than vice versa. The directionality of gene flow observed may be explained by the colonization of the YKD from northern glacial refugia or by YKD metapopulation dynamics.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Genetic characterization of Common Eiders breeding in the Yukon-Kuskokwim Delta, Alaska |
| Series title | The Condor |
| DOI | 10.1650/0010-5422(2007)109[878:GCOCEB]2.0.CO;2 |
| Volume | 109 |
| Issue | 4 |
| Year Published | 2007 |
| Language | English |
| Publisher | Cooper Ornithological Society |
| Contributing office(s) | Alaska Science Center, Alaska Science Center Biology WTEB |
| Description | 16 p. |
| First page | 878 |
| Last page | 893 |
| Country | United States |
| State | Alaska |
| Other Geospatial | Yukon-Kuskokwim Delta |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |