State-dependent energy allocation in cod ( Gadus morhua)
Growth and maturation are processes that are tuned to the external environment that an individual is likely to experience, where food availability, the mortality regime, and events necessary to complete the life cycle are of special importance. Understanding what influences life history strategies a...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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crcansciencepubl:10.1139/f05-209 2024-09-15T17:52:27+00:00 State-dependent energy allocation in cod ( Gadus morhua) Jørgensen, Christian Fiksen, Øyvind 2006 http://dx.doi.org/10.1139/f05-209 http://www.nrcresearchpress.com/doi/pdf/10.1139/f05-209 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 63, issue 1, page 186-199 ISSN 0706-652X 1205-7533 journal-article 2006 crcansciencepubl https://doi.org/10.1139/f05-209 2024-07-04T04:10:00Z Growth and maturation are processes that are tuned to the external environment that an individual is likely to experience, where food availability, the mortality regime, and events necessary to complete the life cycle are of special importance. Understanding what influences life history strategies and how changes in life history in turn influence population dynamics and ecological interactions are crucial to our understanding of marine ecology and contemporary anthropogenic induced change. We present a state-dependent model that optimises life-long energy allocation in iteroparous fish. Energy can be allocated to growth or reproduction and depends in the individual's age, body length, and stored energy and the state of the environment. Allocation and the physiological processes of growth, energy storage, and reproduction are modelled mechanistically. The model is parameterised for Atlantic cod (Gadus morhua), more specifically the Northeast Arctic cod stock. Growth and maturation predicted by the model fit well with field observations, and based on a further investigation of cod reproduction in the model, we conclude that the model has the ability to recapture complex life history phenomena, e.g., indeterminate growth and skipped spawning, and therefore provides an important tool that can improve our understanding of life history strategies in fish. Article in Journal/Newspaper Arctic cod atlantic cod Gadus morhua Northeast Arctic cod Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 63 1 186 199 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Growth and maturation are processes that are tuned to the external environment that an individual is likely to experience, where food availability, the mortality regime, and events necessary to complete the life cycle are of special importance. Understanding what influences life history strategies and how changes in life history in turn influence population dynamics and ecological interactions are crucial to our understanding of marine ecology and contemporary anthropogenic induced change. We present a state-dependent model that optimises life-long energy allocation in iteroparous fish. Energy can be allocated to growth or reproduction and depends in the individual's age, body length, and stored energy and the state of the environment. Allocation and the physiological processes of growth, energy storage, and reproduction are modelled mechanistically. The model is parameterised for Atlantic cod (Gadus morhua), more specifically the Northeast Arctic cod stock. Growth and maturation predicted by the model fit well with field observations, and based on a further investigation of cod reproduction in the model, we conclude that the model has the ability to recapture complex life history phenomena, e.g., indeterminate growth and skipped spawning, and therefore provides an important tool that can improve our understanding of life history strategies in fish. |
format |
Article in Journal/Newspaper |
author |
Jørgensen, Christian Fiksen, Øyvind |
spellingShingle |
Jørgensen, Christian Fiksen, Øyvind State-dependent energy allocation in cod ( Gadus morhua) |
author_facet |
Jørgensen, Christian Fiksen, Øyvind |
author_sort |
Jørgensen, Christian |
title |
State-dependent energy allocation in cod ( Gadus morhua) |
title_short |
State-dependent energy allocation in cod ( Gadus morhua) |
title_full |
State-dependent energy allocation in cod ( Gadus morhua) |
title_fullStr |
State-dependent energy allocation in cod ( Gadus morhua) |
title_full_unstemmed |
State-dependent energy allocation in cod ( Gadus morhua) |
title_sort |
state-dependent energy allocation in cod ( gadus morhua) |
publisher |
Canadian Science Publishing |
publishDate |
2006 |
url |
http://dx.doi.org/10.1139/f05-209 http://www.nrcresearchpress.com/doi/pdf/10.1139/f05-209 |
genre |
Arctic cod atlantic cod Gadus morhua Northeast Arctic cod |
genre_facet |
Arctic cod atlantic cod Gadus morhua Northeast Arctic cod |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 63, issue 1, page 186-199 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f05-209 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
63 |
container_issue |
1 |
container_start_page |
186 |
op_container_end_page |
199 |
_version_ |
1810294485436858368 |