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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Canadian Science Publishing
2024
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ftdoajarticles:oai:doaj.org/article:bc9b8c6970764a83b4af6119d2415bba 2024-02-11T09:59:15+01:00 Assessment of inter-regional dietary differences in anadromous Arctic Char (Salvelinus alpinus) in Nunavik, Canada, and links with flesh quality indicators Sara Bolduc Mélanie Lemire Jean-Éric Tremblay Marianne Falardeau Xavier Dallaire Mylène Brochu Justine Legros Jean-Sébastien Moore 2024-01-01T00:00:00Z https://doi.org/10.1139/AS-2023-0018 https://doaj.org/article/bc9b8c6970764a83b4af6119d2415bba EN FR eng fre Canadian Science Publishing https://cdnsciencepub.com/doi/10.1139/AS-2023-0018 https://doaj.org/toc/2368-7460 doi:10.1139/AS-2023-0018 2368-7460 https://doaj.org/article/bc9b8c6970764a83b4af6119d2415bba Arctic Science (2024) Environmental sciences GE1-350 Environmental engineering TA170-171 article 2024 ftdoajarticles https://doi.org/10.1139/AS-2023-0018 2024-01-14T01:36:58Z 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 three marine coastal regions of Nunavik (Hudson Bay, Hudson Strait and Ungava Bay) and described diet (stable isotopes δ13C & δ15N) and flesh quality (fatty acids and carotenoids) and assessed associations between 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 δ13C values indicated that diet 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 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) Arctic Science |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English French |
topic |
Environmental sciences GE1-350 Environmental engineering TA170-171 |
spellingShingle |
Environmental sciences GE1-350 Environmental engineering TA170-171 Sara Bolduc Mélanie Lemire Jean-Éric Tremblay Marianne Falardeau Xavier Dallaire Mylène Brochu Justine Legros Jean-Sébastien Moore Assessment of inter-regional dietary differences in anadromous Arctic Char (Salvelinus alpinus) in Nunavik, Canada, and links with flesh quality indicators |
topic_facet |
Environmental sciences GE1-350 Environmental engineering TA170-171 |
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 three marine coastal regions of Nunavik (Hudson Bay, Hudson Strait and Ungava Bay) and described diet (stable isotopes δ13C & δ15N) and flesh quality (fatty acids and carotenoids) and assessed associations between 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 δ13C values indicated that diet 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. |
format |
Article in Journal/Newspaper |
author |
Sara Bolduc Mélanie Lemire Jean-Éric Tremblay Marianne Falardeau Xavier Dallaire Mylène Brochu Justine Legros Jean-Sébastien Moore |
author_facet |
Sara Bolduc Mélanie Lemire Jean-Éric Tremblay Marianne Falardeau Xavier Dallaire Mylène Brochu Justine Legros Jean-Sébastien Moore |
author_sort |
Sara Bolduc |
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 |
https://doi.org/10.1139/AS-2023-0018 https://doaj.org/article/bc9b8c6970764a83b4af6119d2415bba |
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 (2024) |
op_relation |
https://cdnsciencepub.com/doi/10.1139/AS-2023-0018 https://doaj.org/toc/2368-7460 doi:10.1139/AS-2023-0018 2368-7460 https://doaj.org/article/bc9b8c6970764a83b4af6119d2415bba |
op_doi |
https://doi.org/10.1139/AS-2023-0018 |
container_title |
Arctic Science |
_version_ |
1790595208856993792 |