Presence of a conspecific causes divergent changes in resting metabolism, depending on its relative size
It is well established that the average metabolism of many species of fish varies with group size. However, it is not clear whether all individuals respond in the same way. Here, we use a newly calibrated method of measuring the metabolic rate of fish from opercular (ventilatory) movements that allo...
Published in: | Proceedings of the Royal Society B: Biological Sciences |
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crroyalsociety:10.1098/rspb.2009.1219 2024-06-02T08:03:41+00:00 Presence of a conspecific causes divergent changes in resting metabolism, depending on its relative size Millidine, K. J. Metcalfe, N. B. Armstrong, J. D. 2009 http://dx.doi.org/10.1098/rspb.2009.1219 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2009.1219 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2009.1219 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 1675, page 3989-3993 ISSN 0962-8452 1471-2954 journal-article 2009 crroyalsociety https://doi.org/10.1098/rspb.2009.1219 2024-05-07T14:16:15Z It is well established that the average metabolism of many species of fish varies with group size. However, it is not clear whether all individuals respond in the same way. Here, we use a newly calibrated method of measuring the metabolic rate of fish from opercular (ventilatory) movements that allows for the first-time estimation of changes in resting metabolic rate (RMR) of each individual within different social groups and when alone. The presence of a conspecific had divergent effects on the RMR of juvenile Atlantic salmon Salmo salar , depending on its relative body size: the presence of a smaller fish caused a 40 per cent reduction, whereas the presence of a slightly larger fish approximately doubled RMR. These effects occurred in the absence of activity and were sustained at lower magnitude in the case of the relatively smaller conspecific even if a transparent barrier prevented any physical interactions between fish. Changes in RMR were mirrored by changes in eye colour that indicate they were linked to stress levels. These contrasting and strong responses show that even the nearby presence of a conspecific can have profound and variable effects on an individual's energy budget; they also highlight the complex trade-offs involved in social interactions. Article in Journal/Newspaper Atlantic salmon Salmo salar The Royal Society Proceedings of the Royal Society B: Biological Sciences 276 1675 3989 3993 |
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The Royal Society |
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crroyalsociety |
language |
English |
description |
It is well established that the average metabolism of many species of fish varies with group size. However, it is not clear whether all individuals respond in the same way. Here, we use a newly calibrated method of measuring the metabolic rate of fish from opercular (ventilatory) movements that allows for the first-time estimation of changes in resting metabolic rate (RMR) of each individual within different social groups and when alone. The presence of a conspecific had divergent effects on the RMR of juvenile Atlantic salmon Salmo salar , depending on its relative body size: the presence of a smaller fish caused a 40 per cent reduction, whereas the presence of a slightly larger fish approximately doubled RMR. These effects occurred in the absence of activity and were sustained at lower magnitude in the case of the relatively smaller conspecific even if a transparent barrier prevented any physical interactions between fish. Changes in RMR were mirrored by changes in eye colour that indicate they were linked to stress levels. These contrasting and strong responses show that even the nearby presence of a conspecific can have profound and variable effects on an individual's energy budget; they also highlight the complex trade-offs involved in social interactions. |
format |
Article in Journal/Newspaper |
author |
Millidine, K. J. Metcalfe, N. B. Armstrong, J. D. |
spellingShingle |
Millidine, K. J. Metcalfe, N. B. Armstrong, J. D. Presence of a conspecific causes divergent changes in resting metabolism, depending on its relative size |
author_facet |
Millidine, K. J. Metcalfe, N. B. Armstrong, J. D. |
author_sort |
Millidine, K. J. |
title |
Presence of a conspecific causes divergent changes in resting metabolism, depending on its relative size |
title_short |
Presence of a conspecific causes divergent changes in resting metabolism, depending on its relative size |
title_full |
Presence of a conspecific causes divergent changes in resting metabolism, depending on its relative size |
title_fullStr |
Presence of a conspecific causes divergent changes in resting metabolism, depending on its relative size |
title_full_unstemmed |
Presence of a conspecific causes divergent changes in resting metabolism, depending on its relative size |
title_sort |
presence of a conspecific causes divergent changes in resting metabolism, depending on its relative size |
publisher |
The Royal Society |
publishDate |
2009 |
url |
http://dx.doi.org/10.1098/rspb.2009.1219 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2009.1219 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2009.1219 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Proceedings of the Royal Society B: Biological Sciences volume 276, issue 1675, page 3989-3993 ISSN 0962-8452 1471-2954 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rspb.2009.1219 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
276 |
container_issue |
1675 |
container_start_page |
3989 |
op_container_end_page |
3993 |
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1800748274681905152 |