Journal
IBIS
Volume 164, Issue 1, Pages 313-319Publisher
WILEY
DOI: 10.1111/ibi.12991
Keywords
island populations; migration; phylogeography; population structure; shorebird
Categories
Funding
- Norte Portugal Regional Operational Programme (NORTE2020), under the PORTUGAL 2020 Partnership Agreement through the European Regional Development Fund (ERDF) [NORTE-01-0145-FEDER-000007]
- ON.2-North Portugal
- National Strategic Reference Framework, ERDF
- FCT [IF/00564/2012, DL57/2016]
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The study found that the Azorean populations of Eurasian Woodcock show a trend of reduced genetic diversity and consistent differentiation from mainland populations. It is likely that these populations have diverged recently from their mainland counterparts, but gene flow is currently restricted.
The Eurasian Woodcock Scolopax rusticola is a widespread Palaearctic migratory wader, with purportedly sedentary populations occurring in the Macaronesian archipelago of the Azores. Here we used microsatellite markers to investigate patterns of genetic diversity and differentiation in these insular birds, and compared Azorean populations with those from mainland Europe. Azorean populations show a (non-significant) trend for reduced diversity, and low but consistent differentiation from mainland populations; evidence for widespread over-water migration (in either direction) is weak but must occasionally occur given the recovery of an Azorean ringed bird in France. It is thus likely that the Azorean populations diverged recently from their mainland counterparts, but gene flow is currently restricted.
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