Disparate movement behavior and feeding ecology in sympatric ecotypes of Atlantic cod
Coexistence of ecotypes, genetically divergent population units, is a widespread phenomenon, potentially affecting ecosystem functioning and local food web stability. In coastal Skagerrak, Atlantic cod (Gadus morhua) occur as two such coexisting ecotypes. We applied a combination of acoustic telemet...
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8366838/ http://www.ncbi.nlm.nih.gov/pubmed/34429934 https://doi.org/10.1002/ece3.7939 |
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ftpubmed:oai:pubmedcentral.nih.gov:8366838 2023-05-15T15:27:13+02:00 Disparate movement behavior and feeding ecology in sympatric ecotypes of Atlantic cod Kristensen, Martin Lykke Olsen, Esben Moland Moland, Even Knutsen, Halvor Grønkjær, Peter Koed, Anders Källo, Kristi Aarestrup, Kim 2021-07-26 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8366838/ http://www.ncbi.nlm.nih.gov/pubmed/34429934 https://doi.org/10.1002/ece3.7939 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8366838/ http://www.ncbi.nlm.nih.gov/pubmed/34429934 http://dx.doi.org/10.1002/ece3.7939 © 2021 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY Ecol Evol Original Research Text 2021 ftpubmed https://doi.org/10.1002/ece3.7939 2021-08-29T00:29:20Z Coexistence of ecotypes, genetically divergent population units, is a widespread phenomenon, potentially affecting ecosystem functioning and local food web stability. In coastal Skagerrak, Atlantic cod (Gadus morhua) occur as two such coexisting ecotypes. We applied a combination of acoustic telemetry, genotyping, and stable isotope analysis to 72 individuals to investigate movement ecology and food niche of putative local “Fjord” and putative oceanic “North Sea” ecotypes—thus named based on previous molecular studies. Genotyping and individual origin assignment suggested 41 individuals were Fjord and 31 were North Sea ecotypes. Both ecotypes were found throughout the fjord. Seven percent of Fjord ecotype individuals left the study system during the study while 42% of North Sea individuals left, potentially homing to natal spawning grounds. Home range sizes were similar for the two ecotypes but highly variable among individuals. Fjord ecotype cod had significantly higher δ(13)C and δ(15)N stable isotope values than North Sea ecotype cod, suggesting they exploited different food niches. The results suggest coexisting ecotypes may possess innate differences in feeding and movement ecologies and may thus fill different functional roles in marine ecosystems. This highlights the importance of conserving interconnected populations to ensure stable ecosystem functioning and food web structures. Text atlantic cod Gadus morhua PubMed Central (PMC) Ecology and Evolution 11 16 11477 11490 |
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Original Research Kristensen, Martin Lykke Olsen, Esben Moland Moland, Even Knutsen, Halvor Grønkjær, Peter Koed, Anders Källo, Kristi Aarestrup, Kim Disparate movement behavior and feeding ecology in sympatric ecotypes of Atlantic cod |
topic_facet |
Original Research |
description |
Coexistence of ecotypes, genetically divergent population units, is a widespread phenomenon, potentially affecting ecosystem functioning and local food web stability. In coastal Skagerrak, Atlantic cod (Gadus morhua) occur as two such coexisting ecotypes. We applied a combination of acoustic telemetry, genotyping, and stable isotope analysis to 72 individuals to investigate movement ecology and food niche of putative local “Fjord” and putative oceanic “North Sea” ecotypes—thus named based on previous molecular studies. Genotyping and individual origin assignment suggested 41 individuals were Fjord and 31 were North Sea ecotypes. Both ecotypes were found throughout the fjord. Seven percent of Fjord ecotype individuals left the study system during the study while 42% of North Sea individuals left, potentially homing to natal spawning grounds. Home range sizes were similar for the two ecotypes but highly variable among individuals. Fjord ecotype cod had significantly higher δ(13)C and δ(15)N stable isotope values than North Sea ecotype cod, suggesting they exploited different food niches. The results suggest coexisting ecotypes may possess innate differences in feeding and movement ecologies and may thus fill different functional roles in marine ecosystems. This highlights the importance of conserving interconnected populations to ensure stable ecosystem functioning and food web structures. |
format |
Text |
author |
Kristensen, Martin Lykke Olsen, Esben Moland Moland, Even Knutsen, Halvor Grønkjær, Peter Koed, Anders Källo, Kristi Aarestrup, Kim |
author_facet |
Kristensen, Martin Lykke Olsen, Esben Moland Moland, Even Knutsen, Halvor Grønkjær, Peter Koed, Anders Källo, Kristi Aarestrup, Kim |
author_sort |
Kristensen, Martin Lykke |
title |
Disparate movement behavior and feeding ecology in sympatric ecotypes of Atlantic cod |
title_short |
Disparate movement behavior and feeding ecology in sympatric ecotypes of Atlantic cod |
title_full |
Disparate movement behavior and feeding ecology in sympatric ecotypes of Atlantic cod |
title_fullStr |
Disparate movement behavior and feeding ecology in sympatric ecotypes of Atlantic cod |
title_full_unstemmed |
Disparate movement behavior and feeding ecology in sympatric ecotypes of Atlantic cod |
title_sort |
disparate movement behavior and feeding ecology in sympatric ecotypes of atlantic cod |
publisher |
John Wiley and Sons Inc. |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8366838/ http://www.ncbi.nlm.nih.gov/pubmed/34429934 https://doi.org/10.1002/ece3.7939 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Ecol Evol |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8366838/ http://www.ncbi.nlm.nih.gov/pubmed/34429934 http://dx.doi.org/10.1002/ece3.7939 |
op_rights |
© 2021 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/ece3.7939 |
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Ecology and Evolution |
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11 |
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16 |
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11477 |
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11490 |
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1766357666087567360 |