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 anad...
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ftdoajarticles:oai:doaj.org/article:b65488e3b24948389a2f9be0baa53e0c 2023-05-15T14:48:22+02:00 Genomic data support management of anadromous Arctic Char fisheries in Nunavik by highlighting neutral and putatively adaptive genetic variation Xavier Dallaire Éric Normandeau Julien Mainguy Jean‐Éric Tremblay Louis Bernatchez Jean‐Sébastien Moore 2021-07-01T00:00:00Z https://doi.org/10.1111/eva.13248 https://doaj.org/article/b65488e3b24948389a2f9be0baa53e0c EN eng Wiley https://doi.org/10.1111/eva.13248 https://doaj.org/toc/1752-4571 1752-4571 doi:10.1111/eva.13248 https://doaj.org/article/b65488e3b24948389a2f9be0baa53e0c Evolutionary Applications, Vol 14, Iss 7, Pp 1880-1897 (2021) anadromous salmonid Arctic local adaptation marine ecosystems population genomics Evolution QH359-425 article 2021 ftdoajarticles https://doi.org/10.1111/eva.13248 2022-12-31T10:26:06Z 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 Directory of Open Access Journals: DOAJ Articles 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 14 7 1880 1897 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
anadromous salmonid Arctic local adaptation marine ecosystems population genomics Evolution QH359-425 |
spellingShingle |
anadromous salmonid Arctic local adaptation marine ecosystems population genomics Evolution QH359-425 Xavier Dallaire Éric Normandeau Julien Mainguy Jean‐Éric Tremblay Louis Bernatchez Jean‐Sébastien Moore Genomic data support management of anadromous Arctic Char fisheries in Nunavik by highlighting neutral and putatively adaptive genetic variation |
topic_facet |
anadromous salmonid Arctic local adaptation marine ecosystems population genomics Evolution QH359-425 |
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. |
format |
Article in Journal/Newspaper |
author |
Xavier Dallaire Éric Normandeau Julien Mainguy Jean‐Éric Tremblay Louis Bernatchez Jean‐Sébastien Moore |
author_facet |
Xavier Dallaire Éric Normandeau Julien Mainguy Jean‐Éric Tremblay Louis Bernatchez Jean‐Sébastien Moore |
author_sort |
Xavier Dallaire |
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 |
https://doi.org/10.1111/eva.13248 https://doaj.org/article/b65488e3b24948389a2f9be0baa53e0c |
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, Vol 14, Iss 7, Pp 1880-1897 (2021) |
op_relation |
https://doi.org/10.1111/eva.13248 https://doaj.org/toc/1752-4571 1752-4571 doi:10.1111/eva.13248 https://doaj.org/article/b65488e3b24948389a2f9be0baa53e0c |
op_doi |
https://doi.org/10.1111/eva.13248 |
container_title |
Evolutionary Applications |
container_volume |
14 |
container_issue |
7 |
container_start_page |
1880 |
op_container_end_page |
1897 |
_version_ |
1766319450730004480 |