Population genetics of Bull Trout (Salvelinus confluentus) in the upper Athabasca River basin
Abstract Freshwater ecosystems are negatively impacted by a variety of anthropogenic stressors, with concomitant elevated rates of population decline for freshwater aquatic vertebrates. Because reductions in population size and extent can negatively impact genetic diversity and gene flow, which are...
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ftdoajarticles:oai:doaj.org/article:391854d7d8904100a5daecbb6001eb2b 2023-05-15T15:26:00+02:00 Population genetics of Bull Trout (Salvelinus confluentus) in the upper Athabasca River basin Emma K. T. Carroll Steven M. Vamosi 2021-11-01T00:00:00Z https://doi.org/10.1002/ece3.8110 https://doaj.org/article/391854d7d8904100a5daecbb6001eb2b EN eng Wiley https://doi.org/10.1002/ece3.8110 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.8110 https://doaj.org/article/391854d7d8904100a5daecbb6001eb2b Ecology and Evolution, Vol 11, Iss 21, Pp 14509-14520 (2021) Bull Trout conservation microsatellites population genetics population structure Salvelinus Ecology QH540-549.5 article 2021 ftdoajarticles https://doi.org/10.1002/ece3.8110 2022-12-31T11:36:02Z Abstract Freshwater ecosystems are negatively impacted by a variety of anthropogenic stressors, with concomitant elevated rates of population decline for freshwater aquatic vertebrates. Because reductions in population size and extent can negatively impact genetic diversity and gene flow, which are vital for sustained local adaptation, it is important to measure these characteristics in threatened species that may yet be rescued from extinction. Across its native range, Bull Trout (Salvelinus confluentus) extent and abundance are in decline due to historic overharvest, invasive non‐native species, and habitat loss. In Alberta's Eastern Slope region, populations at the range margin have progressively been lost, motivating us to better understand the amount and distribution of genetic variation in headwater habitats and some downstream sites where they continue to persist. Across this region, we sampled 431 Bull Trout from 20 sites in the Athabasca and Saskatchewan River basins and assayed 10 microsatellite loci to characterize within‐ and among‐population genetic variation. The Saskatchewan and Athabasca River basins contained similar levels of heterozygosity but were differentiated from one another. Within the Athabasca River basin, five genetically differentiated clusters were found. Despite the evidence for genetic differentiation, we did not observe significant isolation‐by‐distance patterns among these sites. Our findings of ample genetic diversity and no evidence for hybridization with non‐native Brook Trout in headwater habitats provide motivation to ameliorate downstream habitats and remove anthropogenic barriers to connectivity towards the goal of long‐term persistence of this species. Article in Journal/Newspaper Athabasca River Directory of Open Access Journals: DOAJ Articles Athabasca River Ecology and Evolution 11 21 14509 14520 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Bull Trout conservation microsatellites population genetics population structure Salvelinus Ecology QH540-549.5 |
spellingShingle |
Bull Trout conservation microsatellites population genetics population structure Salvelinus Ecology QH540-549.5 Emma K. T. Carroll Steven M. Vamosi Population genetics of Bull Trout (Salvelinus confluentus) in the upper Athabasca River basin |
topic_facet |
Bull Trout conservation microsatellites population genetics population structure Salvelinus Ecology QH540-549.5 |
description |
Abstract Freshwater ecosystems are negatively impacted by a variety of anthropogenic stressors, with concomitant elevated rates of population decline for freshwater aquatic vertebrates. Because reductions in population size and extent can negatively impact genetic diversity and gene flow, which are vital for sustained local adaptation, it is important to measure these characteristics in threatened species that may yet be rescued from extinction. Across its native range, Bull Trout (Salvelinus confluentus) extent and abundance are in decline due to historic overharvest, invasive non‐native species, and habitat loss. In Alberta's Eastern Slope region, populations at the range margin have progressively been lost, motivating us to better understand the amount and distribution of genetic variation in headwater habitats and some downstream sites where they continue to persist. Across this region, we sampled 431 Bull Trout from 20 sites in the Athabasca and Saskatchewan River basins and assayed 10 microsatellite loci to characterize within‐ and among‐population genetic variation. The Saskatchewan and Athabasca River basins contained similar levels of heterozygosity but were differentiated from one another. Within the Athabasca River basin, five genetically differentiated clusters were found. Despite the evidence for genetic differentiation, we did not observe significant isolation‐by‐distance patterns among these sites. Our findings of ample genetic diversity and no evidence for hybridization with non‐native Brook Trout in headwater habitats provide motivation to ameliorate downstream habitats and remove anthropogenic barriers to connectivity towards the goal of long‐term persistence of this species. |
format |
Article in Journal/Newspaper |
author |
Emma K. T. Carroll Steven M. Vamosi |
author_facet |
Emma K. T. Carroll Steven M. Vamosi |
author_sort |
Emma K. T. Carroll |
title |
Population genetics of Bull Trout (Salvelinus confluentus) in the upper Athabasca River basin |
title_short |
Population genetics of Bull Trout (Salvelinus confluentus) in the upper Athabasca River basin |
title_full |
Population genetics of Bull Trout (Salvelinus confluentus) in the upper Athabasca River basin |
title_fullStr |
Population genetics of Bull Trout (Salvelinus confluentus) in the upper Athabasca River basin |
title_full_unstemmed |
Population genetics of Bull Trout (Salvelinus confluentus) in the upper Athabasca River basin |
title_sort |
population genetics of bull trout (salvelinus confluentus) in the upper athabasca river basin |
publisher |
Wiley |
publishDate |
2021 |
url |
https://doi.org/10.1002/ece3.8110 https://doaj.org/article/391854d7d8904100a5daecbb6001eb2b |
geographic |
Athabasca River |
geographic_facet |
Athabasca River |
genre |
Athabasca River |
genre_facet |
Athabasca River |
op_source |
Ecology and Evolution, Vol 11, Iss 21, Pp 14509-14520 (2021) |
op_relation |
https://doi.org/10.1002/ece3.8110 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.8110 https://doaj.org/article/391854d7d8904100a5daecbb6001eb2b |
op_doi |
https://doi.org/10.1002/ece3.8110 |
container_title |
Ecology and Evolution |
container_volume |
11 |
container_issue |
21 |
container_start_page |
14509 |
op_container_end_page |
14520 |
_version_ |
1766356579597156352 |