Data from: Assessing conservation risks to populations of an anadromous Arctic salmonid, the northern Dolly Varden (Salvelinus malma malma), via estimates of effective and census population sizes and approximate Bayesian computation

• Main Authors: Harris, Les N., Palstra, Friso P., Bajno, Rob, Gallagher, Colin P., Howland, Kimberly L., Taylor, Eric B., Reist, James D., Bajno, Robert
• Other Authors: Federated Research Data Repository, Dépôt fédéré de données de recherche
• Format: Dataset
• Language: unknown
• Published: UBC Dataverse 2021
• Subjects: Other; effective population size; 1980s-present; conservation; Census population size; Northern Dolly Varden; Salvelinus malma malma; approximate Bayesian computation; Life sciences; medicine and health care; Yukon Northslope; Firth River YK; Babbage River YK; Big Fish River NT; Rat River NT; stat; demo; Arctic; Yukon; Varden; Firth River; Babbage River; Rat River; Big Fish River
• Online Access: https://doi.org/10.5683/SP2/T9WEDK; https://doi.org/10.5061/dryad.6nd54; https://doi.org/10.14288/1.0397928

Dryad version number: 1 Version status: submitted Dryad curation status: Published Sharing link: https://datadryad.org/stash/share/Np0Zg0kSMKuhOMpK1C86M1oM8RjyfVFhY2UFa6Yfx9Y Storage size: 89668 Visibility: public Usage notes 3D Genepop File Genepop file (3 digit) containing raw microsatellite data used for all analyses. Genepop 3 Digit Abstract Census population size (Nc) is crucial to the development of resource management strategies, however, monitoring the effective population size (Ne) of managed populations has proliferated because of this parameter's relationship to the short-term impacts of genetic stochasticity and long-term population viability. Thus, having a sound understanding of both Nc and Ne, including population connectivity, provides valuable insights into both the demographic and genetic risks to extinction. Here, we assessed microsatellite DNA variation in four (of five known) anadromous northern Dolly Varden (NDV, Salvelinus malma malma) populations from Canada's western Arctic region, to estimate Ne using both temporal-based and single-sample estimators and to test for associations between Ne and Nc. We also employed approximate Bayesian computation (ABC) to evaluate several evolutionary scenarios that have potentially shaped contemporary population structure in this species, focusing particularly on population size and connectivity. We found evidence for moderate to large contemporary and historical Ne, suggesting that short- and long-term extinction risks are low for these populations. Estimates of contemporary and long-term Ne were variable within and among populations and overall estimates could not be reliably linked with Nc or available spawning habitat. The overall estimate of Ne/Nc, was 0.152 and ranged from 0.024 to 0.442 when including errors around the estimate of Ne and Nc. Finally, ABC analyses suggest that NDV had a common origin followed by divergence in isolation while maintaining large effective sizes, but also that these populations were bottlenecked in the past, likely ...