Atlantic cod individual spatial behaviour and stable isotope associations in a no-take marine reserve
Foraging is a behavioural process and, therefore, individual behaviour and diet are theorized to covary. However, few comparisons of individual behaviour type and diet exist in the wild. We tested whether behaviour type and diet covary in a protected population of Atlantic cod, Gadus morhua. Working...
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Online Access: | https://hdl.handle.net/11250/3101311 https://doi.org/10.1111/1365-2656.14014 |
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ftimr:oai:imr.brage.unit.no:11250/3101311 2023-12-10T09:46:32+01:00 Atlantic cod individual spatial behaviour and stable isotope associations in a no-take marine reserve Monk, Christopher Power, Michael Freitas, Carla Harrison, Philip M. Heupel, Michelle Kuparinen, Anna Moland, Even Simpfendorfer, Colin Villegas-Ríos, David Olsen, Esben Moland 2023 application/pdf https://hdl.handle.net/11250/3101311 https://doi.org/10.1111/1365-2656.14014 eng eng Journal of Animal Ecology. 2023, . urn:issn:0021-8790 https://hdl.handle.net/11250/3101311 https://doi.org/10.1111/1365-2656.14014 cristin:2190523 15 Journal of Animal Ecology Peer reviewed Journal article 2023 ftimr https://doi.org/10.1111/1365-2656.14014 2023-11-15T23:47:43Z Foraging is a behavioural process and, therefore, individual behaviour and diet are theorized to covary. However, few comparisons of individual behaviour type and diet exist in the wild. We tested whether behaviour type and diet covary in a protected population of Atlantic cod, Gadus morhua. Working in a no-take marine reserve, we could collect data on natural behavioural variation and diet choice with minimal anthropogenic disturbance. We inferred behaviour using acoustic telemetry and diet from stable isotope compositions (expressed as δ13C and δ15N values). We further investigated whether behaviour and diet could have survival costs. We found cod with shorter diel vertical migration distances fed at higher trophic levels. Cod δ13C and δ15N values scaled positively with body size. Neither behaviour nor diet predicted survival, indicating phenotypic diversity is maintained without survival costs for cod in a protected ecosystem. The links between diet and diel vertical migration highlight that future work is needed to understand whether the shifts in this behaviour during environmental change (e.g. fishing or climate), could lead to trophic cascades. publishedVersion Article in Journal/Newspaper atlantic cod Gadus morhua Institute for Marine Research: Brage IMR Journal of Animal Ecology |
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Open Polar |
collection |
Institute for Marine Research: Brage IMR |
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ftimr |
language |
English |
description |
Foraging is a behavioural process and, therefore, individual behaviour and diet are theorized to covary. However, few comparisons of individual behaviour type and diet exist in the wild. We tested whether behaviour type and diet covary in a protected population of Atlantic cod, Gadus morhua. Working in a no-take marine reserve, we could collect data on natural behavioural variation and diet choice with minimal anthropogenic disturbance. We inferred behaviour using acoustic telemetry and diet from stable isotope compositions (expressed as δ13C and δ15N values). We further investigated whether behaviour and diet could have survival costs. We found cod with shorter diel vertical migration distances fed at higher trophic levels. Cod δ13C and δ15N values scaled positively with body size. Neither behaviour nor diet predicted survival, indicating phenotypic diversity is maintained without survival costs for cod in a protected ecosystem. The links between diet and diel vertical migration highlight that future work is needed to understand whether the shifts in this behaviour during environmental change (e.g. fishing or climate), could lead to trophic cascades. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Monk, Christopher Power, Michael Freitas, Carla Harrison, Philip M. Heupel, Michelle Kuparinen, Anna Moland, Even Simpfendorfer, Colin Villegas-Ríos, David Olsen, Esben Moland |
spellingShingle |
Monk, Christopher Power, Michael Freitas, Carla Harrison, Philip M. Heupel, Michelle Kuparinen, Anna Moland, Even Simpfendorfer, Colin Villegas-Ríos, David Olsen, Esben Moland Atlantic cod individual spatial behaviour and stable isotope associations in a no-take marine reserve |
author_facet |
Monk, Christopher Power, Michael Freitas, Carla Harrison, Philip M. Heupel, Michelle Kuparinen, Anna Moland, Even Simpfendorfer, Colin Villegas-Ríos, David Olsen, Esben Moland |
author_sort |
Monk, Christopher |
title |
Atlantic cod individual spatial behaviour and stable isotope associations in a no-take marine reserve |
title_short |
Atlantic cod individual spatial behaviour and stable isotope associations in a no-take marine reserve |
title_full |
Atlantic cod individual spatial behaviour and stable isotope associations in a no-take marine reserve |
title_fullStr |
Atlantic cod individual spatial behaviour and stable isotope associations in a no-take marine reserve |
title_full_unstemmed |
Atlantic cod individual spatial behaviour and stable isotope associations in a no-take marine reserve |
title_sort |
atlantic cod individual spatial behaviour and stable isotope associations in a no-take marine reserve |
publishDate |
2023 |
url |
https://hdl.handle.net/11250/3101311 https://doi.org/10.1111/1365-2656.14014 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
15 Journal of Animal Ecology |
op_relation |
Journal of Animal Ecology. 2023, . urn:issn:0021-8790 https://hdl.handle.net/11250/3101311 https://doi.org/10.1111/1365-2656.14014 cristin:2190523 |
op_doi |
https://doi.org/10.1111/1365-2656.14014 |
container_title |
Journal of Animal Ecology |
_version_ |
1784889998378532864 |