Morphology of Arctic cod (Boreogadus saida) assessed according to habitat preference and age in the Beaufort Sea
The Arctic cod (Boreogadus saida (Lepechin, 1774)) represents the most widespread and abundant fish in the Arctic and is a critical trophic link in its ecosystems. Like many species endemic to the region, it has lost essential habitat as the extent and thickness of sea ice have declined substantiall...
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Canadian Science Publishing
2023
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Online Access: | https://doi.org/10.1139/as-2022-0043 https://doaj.org/article/f393f1d74d184db9ba3ce070834b868f |
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ftdoajarticles:oai:doaj.org/article:f393f1d74d184db9ba3ce070834b868f 2023-08-20T04:02:45+02:00 Morphology of Arctic cod (Boreogadus saida) assessed according to habitat preference and age in the Beaufort Sea Juliano Malizia Marie Launay Ingrid Marie Bruvold María Quintela Torild Johansen James D. Reist Andrew R. Majewski Denis Roy 2023-06-01T00:00:00Z https://doi.org/10.1139/as-2022-0043 https://doaj.org/article/f393f1d74d184db9ba3ce070834b868f EN FR eng fre Canadian Science Publishing https://cdnsciencepub.com/doi/10.1139/as-2022-0043 https://doaj.org/toc/2368-7460 doi:10.1139/as-2022-0043 2368-7460 https://doaj.org/article/f393f1d74d184db9ba3ce070834b868f Arctic Science (2023) arctic marine ecosystem functional morphology geometric morphometrics gill rakers benthic–pelagic coupling ontogeny Environmental sciences GE1-350 Environmental engineering TA170-171 article 2023 ftdoajarticles https://doi.org/10.1139/as-2022-0043 2023-07-30T00:35:02Z The Arctic cod (Boreogadus saida (Lepechin, 1774)) represents the most widespread and abundant fish in the Arctic and is a critical trophic link in its ecosystems. Like many species endemic to the region, it has lost essential habitat as the extent and thickness of sea ice have declined substantially in recent decades. Extreme warming induced by climate change continues to deteriorate polar marine environments. Thus, understanding how Arctic cod use and partition their habitat/environment is central to their conservation. We assessed Arctic cod functional morphology using traditional (including gill rakers) and geometric morphometrics and explored whether these differed among primarily depth-based habitats and age classes using multivariate techniques. While distinct ecotypes have been proposed, these were not detected in our analyses. Rather, results show similar patterns in external morphology of Arctic cod across habitats and age classes in the Beaufort Sea. However, analysis of gill rakers revealed concurrent habitat- and age-specific changes likely associated with dietary preferences. Findings indicate that although Arctic cod do not specialise in external morphological features in any habitat, important aspects of their internal feeding morphology shift as they grow, likely underpinning important distributional shifts and its critical role in transferring energy in Arctic marine ecosystems. Article in Journal/Newspaper Arctic Arctic cod Arctic Beaufort Sea Boreogadus saida Climate change Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Arctic Science |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English French |
topic |
arctic marine ecosystem functional morphology geometric morphometrics gill rakers benthic–pelagic coupling ontogeny Environmental sciences GE1-350 Environmental engineering TA170-171 |
spellingShingle |
arctic marine ecosystem functional morphology geometric morphometrics gill rakers benthic–pelagic coupling ontogeny Environmental sciences GE1-350 Environmental engineering TA170-171 Juliano Malizia Marie Launay Ingrid Marie Bruvold María Quintela Torild Johansen James D. Reist Andrew R. Majewski Denis Roy Morphology of Arctic cod (Boreogadus saida) assessed according to habitat preference and age in the Beaufort Sea |
topic_facet |
arctic marine ecosystem functional morphology geometric morphometrics gill rakers benthic–pelagic coupling ontogeny Environmental sciences GE1-350 Environmental engineering TA170-171 |
description |
The Arctic cod (Boreogadus saida (Lepechin, 1774)) represents the most widespread and abundant fish in the Arctic and is a critical trophic link in its ecosystems. Like many species endemic to the region, it has lost essential habitat as the extent and thickness of sea ice have declined substantially in recent decades. Extreme warming induced by climate change continues to deteriorate polar marine environments. Thus, understanding how Arctic cod use and partition their habitat/environment is central to their conservation. We assessed Arctic cod functional morphology using traditional (including gill rakers) and geometric morphometrics and explored whether these differed among primarily depth-based habitats and age classes using multivariate techniques. While distinct ecotypes have been proposed, these were not detected in our analyses. Rather, results show similar patterns in external morphology of Arctic cod across habitats and age classes in the Beaufort Sea. However, analysis of gill rakers revealed concurrent habitat- and age-specific changes likely associated with dietary preferences. Findings indicate that although Arctic cod do not specialise in external morphological features in any habitat, important aspects of their internal feeding morphology shift as they grow, likely underpinning important distributional shifts and its critical role in transferring energy in Arctic marine ecosystems. |
format |
Article in Journal/Newspaper |
author |
Juliano Malizia Marie Launay Ingrid Marie Bruvold María Quintela Torild Johansen James D. Reist Andrew R. Majewski Denis Roy |
author_facet |
Juliano Malizia Marie Launay Ingrid Marie Bruvold María Quintela Torild Johansen James D. Reist Andrew R. Majewski Denis Roy |
author_sort |
Juliano Malizia |
title |
Morphology of Arctic cod (Boreogadus saida) assessed according to habitat preference and age in the Beaufort Sea |
title_short |
Morphology of Arctic cod (Boreogadus saida) assessed according to habitat preference and age in the Beaufort Sea |
title_full |
Morphology of Arctic cod (Boreogadus saida) assessed according to habitat preference and age in the Beaufort Sea |
title_fullStr |
Morphology of Arctic cod (Boreogadus saida) assessed according to habitat preference and age in the Beaufort Sea |
title_full_unstemmed |
Morphology of Arctic cod (Boreogadus saida) assessed according to habitat preference and age in the Beaufort Sea |
title_sort |
morphology of arctic cod (boreogadus saida) assessed according to habitat preference and age in the beaufort sea |
publisher |
Canadian Science Publishing |
publishDate |
2023 |
url |
https://doi.org/10.1139/as-2022-0043 https://doaj.org/article/f393f1d74d184db9ba3ce070834b868f |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic cod Arctic Beaufort Sea Boreogadus saida Climate change Sea ice |
genre_facet |
Arctic Arctic cod Arctic Beaufort Sea Boreogadus saida Climate change Sea ice |
op_source |
Arctic Science (2023) |
op_relation |
https://cdnsciencepub.com/doi/10.1139/as-2022-0043 https://doaj.org/toc/2368-7460 doi:10.1139/as-2022-0043 2368-7460 https://doaj.org/article/f393f1d74d184db9ba3ce070834b868f |
op_doi |
https://doi.org/10.1139/as-2022-0043 |
container_title |
Arctic Science |
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1774713361585405952 |