Data from: Assessing polar bear (Ursus maritimus) population structure in the Hudson Bay region using SNPs

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Description:

Defining subpopulations using genetics has traditionally used data from microsatellite markers to investigate population structure; however, single-nucleotide polymorphisms (SNPs) have emerged as a tool for detection of fine-scale structure. In Hudson Bay, Canada, three polar bear (Ursus maritimus) subpopulations (Foxe Basin (FB), Southern Hudson Bay (SH), and Western Hudson Bay (WH)) have been delineated based on mark–recapture studies, radiotelemetry and satellite telemetry, return of marked animals in the subsistence harvest, and population genetics using microsatellites. We used SNPs to detect fine-scale population structure in polar bears from the Hudson Bay region and compared our results to the current designations using 414 individuals genotyped at 2,603 SNPs. Analyses based on discriminant analysis of principal components (DAPC) and STRUCTURE support the presence of four genetic clusters: (i) Western—including individuals sampled in WH, SH (excluding Akimiski Island in James Bay), and southern FB (south of Southampton Island); (ii) Northern—individuals sampled in northern FB (Baffin Island) and Davis Strait (DS) (Labrador coast); (iii) Southeast—individuals from SH (Akimiski Island in James Bay); and (iv) Northeast—individuals from DS (Baffin Island). Population structure differed from microsatellite studies and current management designations demonstrating the value of using SNPs for fine-scale population delineation in polar bears.

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Auteur(s) :

Viengkone, Michelle

Viengkone, Michelle

University of Alberta

, Derocher, Andrew Edward

Derocher, Andrew Edward

University of Alberta

, Richardson, Evan Shaun

Richardson, Evan Shaun

University of Alberta

, Malenfant, René Michael

Malenfant, René Michael

University of New Brunswick

, Miller, Joshua Moses

Miller, Joshua Moses

University of Alberta

, Obbard, Martyn E.

Obbard, Martyn E.

Trent University

, Dyck, Markus G.

Dyck, Markus G.

University of Alberta

, Lunn, Nick J.

Lunn, Nick J.

University of Alberta

, Sahanatien, Vicki

Sahanatien, Vicki

University of Alberta

et Davis, Corey S.

Davis, Corey S.

University of Alberta

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Dépôt source:

Dryad

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License:

https://creativecommons.org/publicdomain/zero/1.0/

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URL:

https://doi.org/10.5061/dryad.1719f

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Date de publication:

2017-10-03

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Mots-clés (en):

Ursus maritimus

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Citation selon les normes APA:

Data from: Assessing polar bear (Ursus maritimus) population structure in the Hudson Bay region using SNPs. (2017). [Data set]. Dryad. https://doi.org/10.5061/dryad.1719f

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