Genetic Stock Structure of Anadromous Arctic Char in Canada’s Central Arctic: Potential Implications for the Management of Canada’s Largest Arctic Char Commercial Fishery
The Arctic Char Salvelinus alpinus is widely considered the most important subsistence fish species in the Canadian Arctic. Throughout the species’ range, commercial fisheries for Arctic Char also exist, the management of which primarily follows river-specific harvest strategies. Such an approach, h...
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ftdatacite:10.6084/m9.figshare.4264268.v1 2023-05-15T14:37:36+02:00 Genetic Stock Structure of Anadromous Arctic Char in Canada’s Central Arctic: Potential Implications for the Management of Canada’s Largest Arctic Char Commercial Fishery Harris, Les N. Jean-Sébastien Moore Bajno, Robert Tallman, Ross F. 2016 https://dx.doi.org/10.6084/m9.figshare.4264268.v1 https://tandf.figshare.com/articles/journal_contribution/Genetic_Stock_Structure_of_Anadromous_Arctic_Char_in_Canada_s_Central_Arctic_Potential_Implications_for_the_Management_of_Canada_s_Largest_Arctic_Char_Commercial_Fishery/4264268/1 unknown Taylor & Francis https://dx.doi.org/10.1080/02755947.2016.1227399 https://dx.doi.org/10.6084/m9.figshare.4264268 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Genetics FOS Biological sciences 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology 69999 Biological Sciences not elsewhere classified Marine Biology Inorganic Chemistry FOS Chemical sciences Science Policy Text article-journal Journal contribution ScholarlyArticle 2016 ftdatacite https://doi.org/10.6084/m9.figshare.4264268.v1 https://doi.org/10.1080/02755947.2016.1227399 https://doi.org/10.6084/m9.figshare.4264268 2021-11-05T12:55:41Z The Arctic Char Salvelinus alpinus is widely considered the most important subsistence fish species in the Canadian Arctic. Throughout the species’ range, commercial fisheries for Arctic Char also exist, the management of which primarily follows river-specific harvest strategies. Such an approach, however, may not be appropriate if the management unit or stock does not accurately reflect a demographically independent population or if mixtures of populations are being harvested. We assayed microsatellite DNA variation among 744 Arctic Char from the Cambridge Bay region, Nunavut, where the largest commercial fishery for the species exists, in order to identify the most appropriate spatial scale at which these stocks should be managed. Our sampling design specifically mirrored that of the commercial fishery in order to describe patterns of genetic structure and genetic variation within and among the harvested component. We also included Arctic Char from more geographically distant sampling locations to provide a spatial context for genetic stock structuring in the region. Overall, we found moderate but significant structure across the entire study area. In contrast, commercially harvested stocks were weakly differentiated, especially among the stocks that are considered part of the Wellington Bay complex. We propose several hypotheses for this weak differentiation, including (1) our sampling design that mirrored the commercial harvest, (2) high rates of potential gene flow, and (3) large effective population sizes. Our results may have important implications for commercial and subsistence fisheries management, including the notion that there are several potential units of conservation below the species level. Received September 29, 2015; accepted August 17, 2016 Published online November 28, 2016 Text Arctic Cambridge Bay Nunavut Salvelinus alpinus Wellington Bay DataCite Metadata Store (German National Library of Science and Technology) Arctic Cambridge Bay ENVELOPE(-105.130,-105.130,69.037,69.037) Nunavut Wellington Bay ENVELOPE(-106.586,-106.586,69.334,69.334) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Genetics FOS Biological sciences 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology 69999 Biological Sciences not elsewhere classified Marine Biology Inorganic Chemistry FOS Chemical sciences Science Policy |
spellingShingle |
Genetics FOS Biological sciences 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology 69999 Biological Sciences not elsewhere classified Marine Biology Inorganic Chemistry FOS Chemical sciences Science Policy Harris, Les N. Jean-Sébastien Moore Bajno, Robert Tallman, Ross F. Genetic Stock Structure of Anadromous Arctic Char in Canada’s Central Arctic: Potential Implications for the Management of Canada’s Largest Arctic Char Commercial Fishery |
topic_facet |
Genetics FOS Biological sciences 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology 69999 Biological Sciences not elsewhere classified Marine Biology Inorganic Chemistry FOS Chemical sciences Science Policy |
description |
The Arctic Char Salvelinus alpinus is widely considered the most important subsistence fish species in the Canadian Arctic. Throughout the species’ range, commercial fisheries for Arctic Char also exist, the management of which primarily follows river-specific harvest strategies. Such an approach, however, may not be appropriate if the management unit or stock does not accurately reflect a demographically independent population or if mixtures of populations are being harvested. We assayed microsatellite DNA variation among 744 Arctic Char from the Cambridge Bay region, Nunavut, where the largest commercial fishery for the species exists, in order to identify the most appropriate spatial scale at which these stocks should be managed. Our sampling design specifically mirrored that of the commercial fishery in order to describe patterns of genetic structure and genetic variation within and among the harvested component. We also included Arctic Char from more geographically distant sampling locations to provide a spatial context for genetic stock structuring in the region. Overall, we found moderate but significant structure across the entire study area. In contrast, commercially harvested stocks were weakly differentiated, especially among the stocks that are considered part of the Wellington Bay complex. We propose several hypotheses for this weak differentiation, including (1) our sampling design that mirrored the commercial harvest, (2) high rates of potential gene flow, and (3) large effective population sizes. Our results may have important implications for commercial and subsistence fisheries management, including the notion that there are several potential units of conservation below the species level. Received September 29, 2015; accepted August 17, 2016 Published online November 28, 2016 |
format |
Text |
author |
Harris, Les N. Jean-Sébastien Moore Bajno, Robert Tallman, Ross F. |
author_facet |
Harris, Les N. Jean-Sébastien Moore Bajno, Robert Tallman, Ross F. |
author_sort |
Harris, Les N. |
title |
Genetic Stock Structure of Anadromous Arctic Char in Canada’s Central Arctic: Potential Implications for the Management of Canada’s Largest Arctic Char Commercial Fishery |
title_short |
Genetic Stock Structure of Anadromous Arctic Char in Canada’s Central Arctic: Potential Implications for the Management of Canada’s Largest Arctic Char Commercial Fishery |
title_full |
Genetic Stock Structure of Anadromous Arctic Char in Canada’s Central Arctic: Potential Implications for the Management of Canada’s Largest Arctic Char Commercial Fishery |
title_fullStr |
Genetic Stock Structure of Anadromous Arctic Char in Canada’s Central Arctic: Potential Implications for the Management of Canada’s Largest Arctic Char Commercial Fishery |
title_full_unstemmed |
Genetic Stock Structure of Anadromous Arctic Char in Canada’s Central Arctic: Potential Implications for the Management of Canada’s Largest Arctic Char Commercial Fishery |
title_sort |
genetic stock structure of anadromous arctic char in canada’s central arctic: potential implications for the management of canada’s largest arctic char commercial fishery |
publisher |
Taylor & Francis |
publishDate |
2016 |
url |
https://dx.doi.org/10.6084/m9.figshare.4264268.v1 https://tandf.figshare.com/articles/journal_contribution/Genetic_Stock_Structure_of_Anadromous_Arctic_Char_in_Canada_s_Central_Arctic_Potential_Implications_for_the_Management_of_Canada_s_Largest_Arctic_Char_Commercial_Fishery/4264268/1 |
long_lat |
ENVELOPE(-105.130,-105.130,69.037,69.037) ENVELOPE(-106.586,-106.586,69.334,69.334) |
geographic |
Arctic Cambridge Bay Nunavut Wellington Bay |
geographic_facet |
Arctic Cambridge Bay Nunavut Wellington Bay |
genre |
Arctic Cambridge Bay Nunavut Salvelinus alpinus Wellington Bay |
genre_facet |
Arctic Cambridge Bay Nunavut Salvelinus alpinus Wellington Bay |
op_relation |
https://dx.doi.org/10.1080/02755947.2016.1227399 https://dx.doi.org/10.6084/m9.figshare.4264268 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.4264268.v1 https://doi.org/10.1080/02755947.2016.1227399 https://doi.org/10.6084/m9.figshare.4264268 |
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