Contrasting intra-individual variation in size-based trophic and habitat shifts for two coastal Arctic fish species
Within and among species variation in trophic and habitat shifts with body size can indicate the potential adaptive capacity of species to ecosystem change. In Arctic coastal ecosystems, which experience dramatic seasonal shifts and are undergoing rapid change, quantifying the trophic flexibility of...
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2023
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10386975/ http://www.ncbi.nlm.nih.gov/pubmed/37488308 https://doi.org/10.1007/s00442-023-05423-9 |
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ftpubmed:oai:pubmedcentral.nih.gov:10386975 2023-08-27T04:07:07+02:00 Contrasting intra-individual variation in size-based trophic and habitat shifts for two coastal Arctic fish species Pettitt-Wade, Harri Hussey, Nigel E. Gallagher, Colin P. Lea, Ellen V. Orrell, Danielle L. Loseto, Lisa L. 2023-07-24 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10386975/ http://www.ncbi.nlm.nih.gov/pubmed/37488308 https://doi.org/10.1007/s00442-023-05423-9 en eng Springer Berlin Heidelberg http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10386975/ http://www.ncbi.nlm.nih.gov/pubmed/37488308 http://dx.doi.org/10.1007/s00442-023-05423-9 © Crown 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . Oecologia Original Research Text 2023 ftpubmed https://doi.org/10.1007/s00442-023-05423-9 2023-08-06T01:20:28Z Within and among species variation in trophic and habitat shifts with body size can indicate the potential adaptive capacity of species to ecosystem change. In Arctic coastal ecosystems, which experience dramatic seasonal shifts and are undergoing rapid change, quantifying the trophic flexibility of coastal fishes with different migratory tactics has received limited attention. We examined the relationships among body length and condition (Fulton’s K, phase angle from Bioelectrical Impedance Analysis) with trophic and habitat shifts (differences in δ(15)N and δ(13)C between blood tissues with different turnover rates) of two abundant and culturally important species, anadromous Arctic char (Salvelinus alpinus, n = 38) and sedentary Greenland cod (Gadus ogac, n = 65) during summer in coastal marine waters near Ulukhaktok, Northwest Territories, Canada. Habitat shifts (δ(13)C) increased with length (i.e., pelagic to benthic-littoral) and crossed-equilibrium (zero) at mid-sizes for both species. Seasonal trophic shifts (δ(15)N) were generally positive (i.e., increasing trophic level) for Arctic char and negative for Greenland cod. As hypothesised, intra-individual variation in size-based trophic shifts (δ(15)N-length residuals) increased with length for Arctic char. However, there were no trends with length in Greenland cod. Our findings highlight the importance of flexibility through ontogeny and mobility for Arctic char, whereas Greenland cod were generalist to localized prey and habitat across all sizes. The significant effect of body condition (phase angle) on size-based trophic shifts in Arctic char, and size-based habitat shifts in Greenland cod, highlight the potential trade-offs of contrasting life history strategies and capacity for ontogenetic niche plasticity. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s00442-023-05423-9. Text Arctic Gadus ogac Greenland Greenland cod Northwest Territories Salvelinus alpinus Ulukhaktok PubMed Central (PMC) Arctic Canada Greenland Northwest Territories Ulukhaktok ENVELOPE(-117.772,-117.772,70.736,70.736) Oecologia 202 3 601 616 |
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English |
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Original Research |
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Original Research Pettitt-Wade, Harri Hussey, Nigel E. Gallagher, Colin P. Lea, Ellen V. Orrell, Danielle L. Loseto, Lisa L. Contrasting intra-individual variation in size-based trophic and habitat shifts for two coastal Arctic fish species |
topic_facet |
Original Research |
description |
Within and among species variation in trophic and habitat shifts with body size can indicate the potential adaptive capacity of species to ecosystem change. In Arctic coastal ecosystems, which experience dramatic seasonal shifts and are undergoing rapid change, quantifying the trophic flexibility of coastal fishes with different migratory tactics has received limited attention. We examined the relationships among body length and condition (Fulton’s K, phase angle from Bioelectrical Impedance Analysis) with trophic and habitat shifts (differences in δ(15)N and δ(13)C between blood tissues with different turnover rates) of two abundant and culturally important species, anadromous Arctic char (Salvelinus alpinus, n = 38) and sedentary Greenland cod (Gadus ogac, n = 65) during summer in coastal marine waters near Ulukhaktok, Northwest Territories, Canada. Habitat shifts (δ(13)C) increased with length (i.e., pelagic to benthic-littoral) and crossed-equilibrium (zero) at mid-sizes for both species. Seasonal trophic shifts (δ(15)N) were generally positive (i.e., increasing trophic level) for Arctic char and negative for Greenland cod. As hypothesised, intra-individual variation in size-based trophic shifts (δ(15)N-length residuals) increased with length for Arctic char. However, there were no trends with length in Greenland cod. Our findings highlight the importance of flexibility through ontogeny and mobility for Arctic char, whereas Greenland cod were generalist to localized prey and habitat across all sizes. The significant effect of body condition (phase angle) on size-based trophic shifts in Arctic char, and size-based habitat shifts in Greenland cod, highlight the potential trade-offs of contrasting life history strategies and capacity for ontogenetic niche plasticity. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s00442-023-05423-9. |
format |
Text |
author |
Pettitt-Wade, Harri Hussey, Nigel E. Gallagher, Colin P. Lea, Ellen V. Orrell, Danielle L. Loseto, Lisa L. |
author_facet |
Pettitt-Wade, Harri Hussey, Nigel E. Gallagher, Colin P. Lea, Ellen V. Orrell, Danielle L. Loseto, Lisa L. |
author_sort |
Pettitt-Wade, Harri |
title |
Contrasting intra-individual variation in size-based trophic and habitat shifts for two coastal Arctic fish species |
title_short |
Contrasting intra-individual variation in size-based trophic and habitat shifts for two coastal Arctic fish species |
title_full |
Contrasting intra-individual variation in size-based trophic and habitat shifts for two coastal Arctic fish species |
title_fullStr |
Contrasting intra-individual variation in size-based trophic and habitat shifts for two coastal Arctic fish species |
title_full_unstemmed |
Contrasting intra-individual variation in size-based trophic and habitat shifts for two coastal Arctic fish species |
title_sort |
contrasting intra-individual variation in size-based trophic and habitat shifts for two coastal arctic fish species |
publisher |
Springer Berlin Heidelberg |
publishDate |
2023 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10386975/ http://www.ncbi.nlm.nih.gov/pubmed/37488308 https://doi.org/10.1007/s00442-023-05423-9 |
long_lat |
ENVELOPE(-117.772,-117.772,70.736,70.736) |
geographic |
Arctic Canada Greenland Northwest Territories Ulukhaktok |
geographic_facet |
Arctic Canada Greenland Northwest Territories Ulukhaktok |
genre |
Arctic Gadus ogac Greenland Greenland cod Northwest Territories Salvelinus alpinus Ulukhaktok |
genre_facet |
Arctic Gadus ogac Greenland Greenland cod Northwest Territories Salvelinus alpinus Ulukhaktok |
op_source |
Oecologia |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10386975/ http://www.ncbi.nlm.nih.gov/pubmed/37488308 http://dx.doi.org/10.1007/s00442-023-05423-9 |
op_rights |
© Crown 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
op_doi |
https://doi.org/10.1007/s00442-023-05423-9 |
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Oecologia |
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202 |
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