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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ftpubmed:oai:pubmedcentral.nih.gov:2677234 2023-05-15T15:32:14+02:00 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. 2009-03-11 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2677234 http://www.ncbi.nlm.nih.gov/pubmed/19324750 https://doi.org/10.1098/rspb.2009.0080 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2677234 http://www.ncbi.nlm.nih.gov/pubmed/19324750 http://dx.doi.org/10.1098/rspb.2009.0080 © 2009 The Royal Society Research Article Text 2009 ftpubmed https://doi.org/10.1098/rspb.2009.0080 2013-09-02T12:47:10Z 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. Text Atlantic salmon Salmo salar PubMed Central (PMC) Proceedings of the Royal Society B: Biological Sciences 276 1664 2103 2108 |
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Research Article 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 |
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Research Article |
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 |
Text |
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. |
title |
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_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_sort |
juvenile salmon with high standard metabolic rates have higher energy costs but can process meals faster |
publisher |
The Royal Society |
publishDate |
2009 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2677234 http://www.ncbi.nlm.nih.gov/pubmed/19324750 https://doi.org/10.1098/rspb.2009.0080 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2677234 http://www.ncbi.nlm.nih.gov/pubmed/19324750 http://dx.doi.org/10.1098/rspb.2009.0080 |
op_rights |
© 2009 The Royal Society |
op_doi |
https://doi.org/10.1098/rspb.2009.0080 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
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276 |
container_issue |
1664 |
container_start_page |
2103 |
op_container_end_page |
2108 |
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1766362734887174144 |