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Red Knot (Calidris canutus) research—Preliminary results and future opportunities

May 18, 2020

The Red Knot, Calidris canutus, is a highly migratory shorebird with a cosmopolitan distribution. Six subspecies have been identified, two of which occur regularly in North America (C.c. rufa and C.c. roselaari). Given their long-distance migrations through many jurisdictions and conservation status, tools are needed to reliably distinguish the subspecies when captured away from their breeding areas and to examine potential population substructure within each taxa. We used a suite of molecular approaches to develop tools to support Red Knot research and management. Although our microsatellite markers were not able to reliably distinguish C.c. rufa and C.c. roselaari, we did find evidence of population substructure within C.c. rufa.

Publication Year 2020
Title Red Knot (Calidris canutus) research—Preliminary results and future opportunities
DOI 10.3133/ofr20201050
Authors David C. Kazyak, Aaron Aunins, Robin L. Johnson
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Open-File Report
Series Number 2020-1050
Index ID ofr20201050
Record Source USGS Publications Warehouse
USGS Organization Leetown Science Center; Eastern Ecological Science Center