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S. Elizabeth Alter, Howard C. Rosenbaum, Lianne D. Postma, Peter Whitridge, Cork Gaines, Diana Weber, Mary G. Egan, Melissa Lindsay, George Amato, Larry Dueck, Robert L. Brownell Jr., Mads-Peter Heide-Jørgensen, Kristin L. Laidre, Gisella Caccone and Brittany L. Hancock Gene flow on ice: the role of sea ice and whaling in shaping Holarctic genetic diversity and population differentiation in bowhead whales (Balaena mysticetus) Ecology and Evolution 2

Version of Record online: 18 OCT 2012 | DOI: 10.1002/ece3.397

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We analyzed modern and ancient DNA across the circumpolar range of the bowhead whale, and used demographic modeling to explore the effects of whaling and ice cover. Our results show two unexpected and novel findings: (1) high gene flow between the Pacific and Atlantic has occurred recently, despite heavy ice cover over the past 400+ years; and (2) ancient specimens of bowhead whales from the central Canadian Arctic show a closer genetic relationship with the BCB population than with today's eastern Canadian stocks. Photo credit: Vicki Beaver, NOAA/AFSC/NMML, Permit No. 782-1719.

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