Genomic data support management of anadromous Arctic Char fisheries in Nunavik by highlighting neutral and putatively adaptive genetic variation
Abstract Distinguishing neutral and adaptive genetic variation is one of the main challenges in investigating processes shaping population structure in the wild, and landscape genomics can help identify signatures of adaptation to contrasting environments. Arctic Char ( Salvelinus alpinus ) is an an...
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crwiley:10.1111/eva.13248 2024-06-23T07:49:44+00:00 Genomic data support management of anadromous Arctic Char fisheries in Nunavik by highlighting neutral and putatively adaptive genetic variation Dallaire, Xavier Normandeau, Éric Mainguy, Julien Tremblay, Jean‐Éric Bernatchez, Louis Moore, Jean‐Sébastien Canada First Research Excellence Fund 2021 http://dx.doi.org/10.1111/eva.13248 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eva.13248 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/eva.13248 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Evolutionary Applications volume 14, issue 7, page 1880-1897 ISSN 1752-4571 1752-4571 journal-article 2021 crwiley https://doi.org/10.1111/eva.13248 2024-06-04T06:48:27Z Abstract Distinguishing neutral and adaptive genetic variation is one of the main challenges in investigating processes shaping population structure in the wild, and landscape genomics can help identify signatures of adaptation to contrasting environments. Arctic Char ( Salvelinus alpinus ) is an anadromous salmonid and the most harvested fish species by Inuit people, including in Nunavik (Québec, Canada), one of the most recently deglaciated regions in the world. Unlike many other anadromous salmonids, Arctic Char occupy coastal habitats near their natal rivers during their short marine phase restricted to the summer ice‐free period. Our main objective was to document putatively neutral and adaptive genomic variation in anadromous Arctic Char populations from Nunavik and bordering regions to inform local fisheries management. We used genotyping by sequencing (GBS) to genotype 18,112 filtered single nucleotide polymorphisms (SNP) in 650 individuals from 23 sampling locations along >2000 km of coastline. Our results reveal a hierarchical genetic structure, whereby neighboring hydrographic systems harbor distinct populations grouped by major oceanographic basins: Hudson Bay, Hudson Strait, Ungava Bay, and Labrador Sea. We found genetic diversity and differentiation to be consistent both with the expected postglacial recolonization history and with patterns of isolation‐by‐distance reflecting contemporary gene flow. Results from three gene–environment association methods supported the hypothesis of local adaptation to both freshwater and marine environments (strongest associations with sea surface and air temperatures during summer and salinity). Our results support a fisheries management strategy at a regional scale, and other implications for hatchery projects and adaptation to climate change are discussed. Article in Journal/Newspaper Arctic Climate change Hudson Bay Hudson Strait inuit Labrador Sea Salvelinus alpinus Ungava Bay Nunavik Wiley Online Library Arctic Canada Hudson Hudson Bay Hudson Strait ENVELOPE(-70.000,-70.000,62.000,62.000) Nunavik Ungava Bay ENVELOPE(-67.489,-67.489,59.498,59.498) Evolutionary Applications |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Distinguishing neutral and adaptive genetic variation is one of the main challenges in investigating processes shaping population structure in the wild, and landscape genomics can help identify signatures of adaptation to contrasting environments. Arctic Char ( Salvelinus alpinus ) is an anadromous salmonid and the most harvested fish species by Inuit people, including in Nunavik (Québec, Canada), one of the most recently deglaciated regions in the world. Unlike many other anadromous salmonids, Arctic Char occupy coastal habitats near their natal rivers during their short marine phase restricted to the summer ice‐free period. Our main objective was to document putatively neutral and adaptive genomic variation in anadromous Arctic Char populations from Nunavik and bordering regions to inform local fisheries management. We used genotyping by sequencing (GBS) to genotype 18,112 filtered single nucleotide polymorphisms (SNP) in 650 individuals from 23 sampling locations along >2000 km of coastline. Our results reveal a hierarchical genetic structure, whereby neighboring hydrographic systems harbor distinct populations grouped by major oceanographic basins: Hudson Bay, Hudson Strait, Ungava Bay, and Labrador Sea. We found genetic diversity and differentiation to be consistent both with the expected postglacial recolonization history and with patterns of isolation‐by‐distance reflecting contemporary gene flow. Results from three gene–environment association methods supported the hypothesis of local adaptation to both freshwater and marine environments (strongest associations with sea surface and air temperatures during summer and salinity). Our results support a fisheries management strategy at a regional scale, and other implications for hatchery projects and adaptation to climate change are discussed. |
author2 |
Canada First Research Excellence Fund |
format |
Article in Journal/Newspaper |
author |
Dallaire, Xavier Normandeau, Éric Mainguy, Julien Tremblay, Jean‐Éric Bernatchez, Louis Moore, Jean‐Sébastien |
spellingShingle |
Dallaire, Xavier Normandeau, Éric Mainguy, Julien Tremblay, Jean‐Éric Bernatchez, Louis Moore, Jean‐Sébastien Genomic data support management of anadromous Arctic Char fisheries in Nunavik by highlighting neutral and putatively adaptive genetic variation |
author_facet |
Dallaire, Xavier Normandeau, Éric Mainguy, Julien Tremblay, Jean‐Éric Bernatchez, Louis Moore, Jean‐Sébastien |
author_sort |
Dallaire, Xavier |
title |
Genomic data support management of anadromous Arctic Char fisheries in Nunavik by highlighting neutral and putatively adaptive genetic variation |
title_short |
Genomic data support management of anadromous Arctic Char fisheries in Nunavik by highlighting neutral and putatively adaptive genetic variation |
title_full |
Genomic data support management of anadromous Arctic Char fisheries in Nunavik by highlighting neutral and putatively adaptive genetic variation |
title_fullStr |
Genomic data support management of anadromous Arctic Char fisheries in Nunavik by highlighting neutral and putatively adaptive genetic variation |
title_full_unstemmed |
Genomic data support management of anadromous Arctic Char fisheries in Nunavik by highlighting neutral and putatively adaptive genetic variation |
title_sort |
genomic data support management of anadromous arctic char fisheries in nunavik by highlighting neutral and putatively adaptive genetic variation |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1111/eva.13248 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eva.13248 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/eva.13248 |
long_lat |
ENVELOPE(-70.000,-70.000,62.000,62.000) ENVELOPE(-67.489,-67.489,59.498,59.498) |
geographic |
Arctic Canada Hudson Hudson Bay Hudson Strait Nunavik Ungava Bay |
geographic_facet |
Arctic Canada Hudson Hudson Bay Hudson Strait Nunavik Ungava Bay |
genre |
Arctic Climate change Hudson Bay Hudson Strait inuit Labrador Sea Salvelinus alpinus Ungava Bay Nunavik |
genre_facet |
Arctic Climate change Hudson Bay Hudson Strait inuit Labrador Sea Salvelinus alpinus Ungava Bay Nunavik |
op_source |
Evolutionary Applications volume 14, issue 7, page 1880-1897 ISSN 1752-4571 1752-4571 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/eva.13248 |
container_title |
Evolutionary Applications |
_version_ |
1802640410079657984 |