Tracing growth patterns in cod ( Gadus morhua L.) using bioenergetic modelling
Abstract Understanding individual growth in commercially exploited fish populations is key to successful stock assessment and informed ecosystem‐based fisheries management. Traditionally, growth rates in marine fish are estimated using otolith age‐readings in combination with age‐length relationship...
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Online Access: | http://dx.doi.org/10.1002/ece3.10751 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.10751 |
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crwiley:10.1002/ece3.10751 2024-06-02T08:06:56+00:00 Tracing growth patterns in cod ( Gadus morhua L.) using bioenergetic modelling Funk, Steffen Funk, Nicole Herrmann, Jens‐Peter Hinrichsen, Hans‐Harald Krumme, Uwe Möllmann, Christian Temming, Axel Bundesministerium für Bildung und Forschung 2023 http://dx.doi.org/10.1002/ece3.10751 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.10751 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Ecology and Evolution volume 13, issue 11 ISSN 2045-7758 2045-7758 journal-article 2023 crwiley https://doi.org/10.1002/ece3.10751 2024-05-03T11:45:57Z Abstract Understanding individual growth in commercially exploited fish populations is key to successful stock assessment and informed ecosystem‐based fisheries management. Traditionally, growth rates in marine fish are estimated using otolith age‐readings in combination with age‐length relationships from field samples, or tag‐recapture field experiments. However, for some species, otolith‐based approaches have been proven unreliable and tag‐recapture experiments suffer from high working effort and costs as well as low recapture rates. An important alternative approach for estimating fish growth is represented by bioenergetic modelling which in addition to pure growth estimation can provide valuable insights into the processes leading to temporal growth changes resulting from environmental and related behavioural changes. We here developed an individual‐based bioenergetic model for Western Baltic cod ( Gadus morhua ), traditionally a commercially important fish species that however collapsed recently and likely suffers from climate change effects. Western Baltic cod is an ideal case study for bioenergetic modelling because of recently gained in‐situ process knowledge on spatial distribution and feeding behaviour based on highly resolved data on stomachs and fish distribution. Additionally, physiological processes such as gastric evacuation, consumption, net‐conversion efficiency and metabolic rates have been well studied for cod in laboratory experiments. Our model reliably reproduced seasonal growth patterns observed in the field. Importantly, our bioenergetic modelling approach implementing depth‐use patterns and food intake allowed us to explain the potentially detrimental effect summer heat periods have on the growth of Western Baltic cod that likely will increasingly occur in the future. Hence, our model simulations highlighted a potential mechanism on how warming due to climate change affects the growth of a key species that may apply for similar environments elsewhere. Article in Journal/Newspaper Gadus morhua Wiley Online Library Ecology and Evolution 13 11 |
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Wiley Online Library |
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English |
description |
Abstract Understanding individual growth in commercially exploited fish populations is key to successful stock assessment and informed ecosystem‐based fisheries management. Traditionally, growth rates in marine fish are estimated using otolith age‐readings in combination with age‐length relationships from field samples, or tag‐recapture field experiments. However, for some species, otolith‐based approaches have been proven unreliable and tag‐recapture experiments suffer from high working effort and costs as well as low recapture rates. An important alternative approach for estimating fish growth is represented by bioenergetic modelling which in addition to pure growth estimation can provide valuable insights into the processes leading to temporal growth changes resulting from environmental and related behavioural changes. We here developed an individual‐based bioenergetic model for Western Baltic cod ( Gadus morhua ), traditionally a commercially important fish species that however collapsed recently and likely suffers from climate change effects. Western Baltic cod is an ideal case study for bioenergetic modelling because of recently gained in‐situ process knowledge on spatial distribution and feeding behaviour based on highly resolved data on stomachs and fish distribution. Additionally, physiological processes such as gastric evacuation, consumption, net‐conversion efficiency and metabolic rates have been well studied for cod in laboratory experiments. Our model reliably reproduced seasonal growth patterns observed in the field. Importantly, our bioenergetic modelling approach implementing depth‐use patterns and food intake allowed us to explain the potentially detrimental effect summer heat periods have on the growth of Western Baltic cod that likely will increasingly occur in the future. Hence, our model simulations highlighted a potential mechanism on how warming due to climate change affects the growth of a key species that may apply for similar environments elsewhere. |
author2 |
Bundesministerium für Bildung und Forschung |
format |
Article in Journal/Newspaper |
author |
Funk, Steffen Funk, Nicole Herrmann, Jens‐Peter Hinrichsen, Hans‐Harald Krumme, Uwe Möllmann, Christian Temming, Axel |
spellingShingle |
Funk, Steffen Funk, Nicole Herrmann, Jens‐Peter Hinrichsen, Hans‐Harald Krumme, Uwe Möllmann, Christian Temming, Axel Tracing growth patterns in cod ( Gadus morhua L.) using bioenergetic modelling |
author_facet |
Funk, Steffen Funk, Nicole Herrmann, Jens‐Peter Hinrichsen, Hans‐Harald Krumme, Uwe Möllmann, Christian Temming, Axel |
author_sort |
Funk, Steffen |
title |
Tracing growth patterns in cod ( Gadus morhua L.) using bioenergetic modelling |
title_short |
Tracing growth patterns in cod ( Gadus morhua L.) using bioenergetic modelling |
title_full |
Tracing growth patterns in cod ( Gadus morhua L.) using bioenergetic modelling |
title_fullStr |
Tracing growth patterns in cod ( Gadus morhua L.) using bioenergetic modelling |
title_full_unstemmed |
Tracing growth patterns in cod ( Gadus morhua L.) using bioenergetic modelling |
title_sort |
tracing growth patterns in cod ( gadus morhua l.) using bioenergetic modelling |
publisher |
Wiley |
publishDate |
2023 |
url |
http://dx.doi.org/10.1002/ece3.10751 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.10751 |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_source |
Ecology and Evolution volume 13, issue 11 ISSN 2045-7758 2045-7758 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ece3.10751 |
container_title |
Ecology and Evolution |
container_volume |
13 |
container_issue |
11 |
_version_ |
1800751927547396096 |