期刊
ECOLOGY AND EVOLUTION
卷 10, 期 8, 页码 3706-3714出版社
WILEY
DOI: 10.1002/ece3.6159
关键词
Arctic; conservation; ddRAD; population genetics; single nucleotide polymorphism; Ursus maritimus
资金
- Government of Canada through Genome Canada
- Ontario Genomics Institute [OGI-123]
- Natural Science and Engineering Council of Canada
Predicting the consequences of environmental changes, including human-mediated climate change on species, requires that we quantify range-wide patterns of genetic diversity and identify the ecological, environmental, and historical factors that have contributed to it. Here, we generate baseline data on polar bear population structure across most Canadian subpopulations (n = 358) using 13,488 genome-wide single nucleotide polymorphisms (SNPs) identified with double-digest restriction site-associated DNA sequencing (ddRAD). Our ddRAD dataset showed three genetic clusters in the sampled Canadian range, congruent with previous studies based on microsatellites across the same regions; however, due to a lack of sampling in Norwegian Bay, we were unable to confirm the existence of a unique cluster in that subpopulation. These data on the genetic structure of polar bears using SNPs provide a detailed baseline against which future shifts in population structure can be assessed, and opportunities to develop new noninvasive tools for monitoring polar bears across their range.
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