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Additional Information

Competing Interests

The authors declare that they have no competing interests.

Author Contributions

Steven H Ferguson conceived and designed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Brent G Young performed the experiments, analyzed the data, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

David J Yurkowski analyzed the data, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Randi Anderson performed the experiments, reviewed drafts of the paper.

Cornelia Willing performed the experiments, reviewed drafts of the paper.

Ole Nielsen performed the experiments, contributed reagents/materials/analysis tools, reviewed drafts of the paper.

Animal Ethics

The following information was supplied relating to ethical approvals (i.e., approving body and any reference numbers):

Permits to collect samples as part of the Inuit subsistence hunts were acquired from Fisheries and Oceans Canada.

Data Deposition

The following information was supplied regarding data availability:

Raw data has been supplied as supplementary files.

Funding

Funding was provided by the Natural Sciences and Engineering Research Council (#1025) of Canada, Federal Program Office of International Polar Year (MD-112), Nunavut Wildlife Management Board (#3-09-04), ArcticNet (#317588), and Fisheries and Oceans Canada (NIF-05). The funders had no role in study design, data collection, preparation or publishing the manuscript. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


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