Juvenile salmon with high standard metabolic rates have higher energy costs but can process meals faster

Basal or standard metabolic rate (SMR) has been found to exhibit substantial intraspecific variation in a range of taxa, but the consequences of this variation are little understood. Here we explore how SMR is related to the energy cost of processing food, known as apparent specific dynamic action o...

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Published in:Proceedings of the Royal Society B: Biological Sciences
Main Authors: Millidine, K.J., Armstrong, J.D., Metcalfe, N.B.
Format: Article in Journal/Newspaper
Language:English
Published: The Royal Society 2009
Subjects:
Online Access:https://doi.org/10.1098/rspb.2009.0080
https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2009.0080
https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2009.0080
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author Millidine, K.J.
Armstrong, J.D.
Metcalfe, N.B.
author_facet Millidine, K.J.
Armstrong, J.D.
Metcalfe, N.B.
author_sort Millidine, K.J.
collection The Royal Society
container_issue 1664
container_start_page 2103
container_title Proceedings of the Royal Society B: Biological Sciences
container_volume 276
description Basal or standard metabolic rate (SMR) has been found to exhibit substantial intraspecific variation in a range of taxa, but the consequences of this variation are little understood. Here we explore how SMR is related to the energy cost of processing food, known as apparent specific dynamic action or the heat increment of feeding. Using juvenile Atlantic salmon Salmo salar , we show that fishes with a higher SMR had a higher peak and a greater total energy expenditure when digesting a given size of meal. However, the duration over which their metabolism was elevated after consuming the meal was shorter. The greater energy costs they incur for processing food may be related to their assimilation efficiency. These relationships are likely to have implications for feeding strategies and growth rates, since individuals with a higher SMR have higher routine costs of living but recover more quickly following feeding and so may have a greater potential for processing food.
format Article in Journal/Newspaper
genre Atlantic salmon
Salmo salar
genre_facet Atlantic salmon
Salmo salar
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institution Open Polar
language English
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op_doi https://doi.org/10.1098/rspb.2009.0080
op_rights https://royalsociety.org/journals/ethics-policies/data-sharing-mining/
op_source Proceedings of the Royal Society B: Biological Sciences
volume 276, issue 1664, page 2103-2108
ISSN 0962-8452 1471-2954
publishDate 2009
publisher The Royal Society
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spelling crroyalsociety:10.1098/rspb.2009.0080 2025-04-20T14:34:29+00:00 Juvenile salmon with high standard metabolic rates have higher energy costs but can process meals faster Millidine, K.J. Armstrong, J.D. Metcalfe, N.B. 2009 https://doi.org/10.1098/rspb.2009.0080 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2009.0080 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2009.0080 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Proceedings of the Royal Society B: Biological Sciences volume 276, issue 1664, page 2103-2108 ISSN 0962-8452 1471-2954 journal-article 2009 crroyalsociety https://doi.org/10.1098/rspb.2009.0080 2025-04-01T04:28:04Z Basal or standard metabolic rate (SMR) has been found to exhibit substantial intraspecific variation in a range of taxa, but the consequences of this variation are little understood. Here we explore how SMR is related to the energy cost of processing food, known as apparent specific dynamic action or the heat increment of feeding. Using juvenile Atlantic salmon Salmo salar , we show that fishes with a higher SMR had a higher peak and a greater total energy expenditure when digesting a given size of meal. However, the duration over which their metabolism was elevated after consuming the meal was shorter. The greater energy costs they incur for processing food may be related to their assimilation efficiency. These relationships are likely to have implications for feeding strategies and growth rates, since individuals with a higher SMR have higher routine costs of living but recover more quickly following feeding and so may have a greater potential for processing food. Article in Journal/Newspaper Atlantic salmon Salmo salar The Royal Society Proceedings of the Royal Society B: Biological Sciences 276 1664 2103 2108
spellingShingle Millidine, K.J.
Armstrong, J.D.
Metcalfe, N.B.
Juvenile salmon with high standard metabolic rates have higher energy costs but can process meals faster
title Juvenile salmon with high standard metabolic rates have higher energy costs but can process meals faster
title_full Juvenile salmon with high standard metabolic rates have higher energy costs but can process meals faster
title_fullStr Juvenile salmon with high standard metabolic rates have higher energy costs but can process meals faster
title_full_unstemmed Juvenile salmon with high standard metabolic rates have higher energy costs but can process meals faster
title_short Juvenile salmon with high standard metabolic rates have higher energy costs but can process meals faster
title_sort juvenile salmon with high standard metabolic rates have higher energy costs but can process meals faster
url https://doi.org/10.1098/rspb.2009.0080
https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2009.0080
https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2009.0080