Assessment of inter-regional dietary differences in anadromous Arctic char ( Salvelinus alpinus) in Nunavik, Canada, and links with flesh quality indicators
Arctic char ( Salvelinus alpinus) is a salmonid fish that is the second-most consumed country food species by Nunavimmiut. Its nutritional quality is determined by omega-3 fatty acids and carotenoid pigments. Those molecules cannot be synthetized by fish and must be acquired through diet. We sampled...
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Online Access: | http://dx.doi.org/10.1139/as-2023-0018 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2023-0018 https://cdnsciencepub.com/doi/pdf/10.1139/as-2023-0018 |
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crcansciencepubl:10.1139/as-2023-0018 2024-06-23T07:48:12+00:00 Assessment of inter-regional dietary differences in anadromous Arctic char ( Salvelinus alpinus) in Nunavik, Canada, and links with flesh quality indicators Bolduc, Sara Lemire, Mélanie Tremblay, Jean-Éric Falardeau, Marianne Dallaire, Xavier Brochu, Mylène Legros, Justine Moore, Jean-Sébastien Canada First Research Excellence Fund Sentinel North and the Northern Contaminant Programme 2024 http://dx.doi.org/10.1139/as-2023-0018 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2023-0018 https://cdnsciencepub.com/doi/pdf/10.1139/as-2023-0018 en eng Canadian Science Publishing https://creativecommons.org/licenses/by/4.0/deed.en_GB Arctic Science volume 10, issue 2, page 372-385 ISSN 2368-7460 journal-article 2024 crcansciencepubl https://doi.org/10.1139/as-2023-0018 2024-06-06T04:11:18Z Arctic char ( Salvelinus alpinus) is a salmonid fish that is the second-most consumed country food species by Nunavimmiut. Its nutritional quality is determined by omega-3 fatty acids and carotenoid pigments. Those molecules cannot be synthetized by fish and must be acquired through diet. We sampled Arctic char in 10 rivers from the three marine coastal regions of Nunavik (Hudson Bay, Hudson Strait, and Ungava Bay), described diet (stable isotopes δ 13 C and δ 15 N) and flesh quality (fatty acids and carotenoids, measured by chromatography) and assessed associations between both diet and flesh quality (including also bio-impedance and colorimetry). Our results suggested inter-regional differences in the diet and nutritional quality of Arctic char in Nunavik, where δ 13 C values indicated that the diet of Arctic char in Hudson Bay was more pelagic, while in Ungava Bay it was more coastal. We also observed inter-regional differences in omega-3 fatty acids and astaxanthin, the pigment responsible for the redness of the flesh color, where concentrations were highest in Ungava Bay Arctic char. In all sampling locations, Arctic char were an exceptional source of omega-3 fatty acids and astaxanthin, confirming its importance as a high-quality wild food. Our models suggest that astaxanthin, canthaxanthin, and water content influence flesh redness. Our data highlight inter-regional differences that could be taken in consideration to better predict the impact of climate change on fish quality and, ultimately, on Inuit diet and health. Article in Journal/Newspaper Arctic Arctic Climate change Hudson Bay Hudson Strait inuit Salvelinus alpinus Ungava Bay Nunavik Canadian Science Publishing 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) Arctic Science |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
Arctic char ( Salvelinus alpinus) is a salmonid fish that is the second-most consumed country food species by Nunavimmiut. Its nutritional quality is determined by omega-3 fatty acids and carotenoid pigments. Those molecules cannot be synthetized by fish and must be acquired through diet. We sampled Arctic char in 10 rivers from the three marine coastal regions of Nunavik (Hudson Bay, Hudson Strait, and Ungava Bay), described diet (stable isotopes δ 13 C and δ 15 N) and flesh quality (fatty acids and carotenoids, measured by chromatography) and assessed associations between both diet and flesh quality (including also bio-impedance and colorimetry). Our results suggested inter-regional differences in the diet and nutritional quality of Arctic char in Nunavik, where δ 13 C values indicated that the diet of Arctic char in Hudson Bay was more pelagic, while in Ungava Bay it was more coastal. We also observed inter-regional differences in omega-3 fatty acids and astaxanthin, the pigment responsible for the redness of the flesh color, where concentrations were highest in Ungava Bay Arctic char. In all sampling locations, Arctic char were an exceptional source of omega-3 fatty acids and astaxanthin, confirming its importance as a high-quality wild food. Our models suggest that astaxanthin, canthaxanthin, and water content influence flesh redness. Our data highlight inter-regional differences that could be taken in consideration to better predict the impact of climate change on fish quality and, ultimately, on Inuit diet and health. |
author2 |
Canada First Research Excellence Fund Sentinel North and the Northern Contaminant Programme |
format |
Article in Journal/Newspaper |
author |
Bolduc, Sara Lemire, Mélanie Tremblay, Jean-Éric Falardeau, Marianne Dallaire, Xavier Brochu, Mylène Legros, Justine Moore, Jean-Sébastien |
spellingShingle |
Bolduc, Sara Lemire, Mélanie Tremblay, Jean-Éric Falardeau, Marianne Dallaire, Xavier Brochu, Mylène Legros, Justine Moore, Jean-Sébastien Assessment of inter-regional dietary differences in anadromous Arctic char ( Salvelinus alpinus) in Nunavik, Canada, and links with flesh quality indicators |
author_facet |
Bolduc, Sara Lemire, Mélanie Tremblay, Jean-Éric Falardeau, Marianne Dallaire, Xavier Brochu, Mylène Legros, Justine Moore, Jean-Sébastien |
author_sort |
Bolduc, Sara |
title |
Assessment of inter-regional dietary differences in anadromous Arctic char ( Salvelinus alpinus) in Nunavik, Canada, and links with flesh quality indicators |
title_short |
Assessment of inter-regional dietary differences in anadromous Arctic char ( Salvelinus alpinus) in Nunavik, Canada, and links with flesh quality indicators |
title_full |
Assessment of inter-regional dietary differences in anadromous Arctic char ( Salvelinus alpinus) in Nunavik, Canada, and links with flesh quality indicators |
title_fullStr |
Assessment of inter-regional dietary differences in anadromous Arctic char ( Salvelinus alpinus) in Nunavik, Canada, and links with flesh quality indicators |
title_full_unstemmed |
Assessment of inter-regional dietary differences in anadromous Arctic char ( Salvelinus alpinus) in Nunavik, Canada, and links with flesh quality indicators |
title_sort |
assessment of inter-regional dietary differences in anadromous arctic char ( salvelinus alpinus) in nunavik, canada, and links with flesh quality indicators |
publisher |
Canadian Science Publishing |
publishDate |
2024 |
url |
http://dx.doi.org/10.1139/as-2023-0018 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2023-0018 https://cdnsciencepub.com/doi/pdf/10.1139/as-2023-0018 |
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 Arctic Climate change Hudson Bay Hudson Strait inuit Salvelinus alpinus Ungava Bay Nunavik |
genre_facet |
Arctic Arctic Climate change Hudson Bay Hudson Strait inuit Salvelinus alpinus Ungava Bay Nunavik |
op_source |
Arctic Science volume 10, issue 2, page 372-385 ISSN 2368-7460 |
op_rights |
https://creativecommons.org/licenses/by/4.0/deed.en_GB |
op_doi |
https://doi.org/10.1139/as-2023-0018 |
container_title |
Arctic Science |
_version_ |
1802638632523137024 |