The performance advantage of a high resting metabolic rate in juvenile salmon is habitat dependent
Summary 1. Basal levels of metabolism vary significantly among individuals in many taxa, but the effects of this on fitness are generally unknown. Resting metabolic rate (RMR) in juvenile salmon and trout is positively related to dominance status and ability to obtain a feeding territory, but it is...
Published in: | Journal of Animal Ecology |
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crwiley:10.1111/j.1365-2656.2012.01969.x 2024-06-02T08:03:43+00:00 The performance advantage of a high resting metabolic rate in juvenile salmon is habitat dependent Reid, Donald Armstrong, John D. Metcalfe, Neil B. 2012 http://dx.doi.org/10.1111/j.1365-2656.2012.01969.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2656.2012.01969.x https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2656.2012.01969.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Animal Ecology volume 81, issue 4, page 868-875 ISSN 0021-8790 1365-2656 journal-article 2012 crwiley https://doi.org/10.1111/j.1365-2656.2012.01969.x 2024-05-03T11:10:21Z Summary 1. Basal levels of metabolism vary significantly among individuals in many taxa, but the effects of this on fitness are generally unknown. Resting metabolic rate (RMR) in juvenile salmon and trout is positively related to dominance status and ability to obtain a feeding territory, but it is not clear how this translates into performance in natural conditions. 2. The relationships between RMR, dominance, territoriality and growth rates of yearling Atlantic salmon Salmo salar were examined in relation to predictability in food supply and habitat complexity, using replicate sections of a large‐scale controlled semi‐natural stream. 3. Estimated RMR was a strong predictor of dominance, and under conditions of a predictable food supply in a structurally simple habitat, high estimated RMR fish obtained the best feeding territories and grew faster. 4. When the spatial distribution of food was made less predictable, dominant (high estimated RMR) fish were still able to occupy the most profitable feeding locations by periodically moving location to track the changes in food availability, but RMR was no longer a predictor of growth rate. Moreover, when a less predictable food supply was combined with a visually more complex (and realistic) habitat, fish were unable to track changes in food availability, grew more slowly and exhibited greater site fidelity, and there were no relationships between estimated RMR and quality of occupied territory or growth rate. 5. The relative benefit of RMR is thus context dependent, depending on both habitat complexity and the predictability of the food supply. Higher habitat complexity and lower food predictability decrease the performance advantages associated with a high RMR. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Journal of Animal Ecology 81 4 868 875 |
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English |
description |
Summary 1. Basal levels of metabolism vary significantly among individuals in many taxa, but the effects of this on fitness are generally unknown. Resting metabolic rate (RMR) in juvenile salmon and trout is positively related to dominance status and ability to obtain a feeding territory, but it is not clear how this translates into performance in natural conditions. 2. The relationships between RMR, dominance, territoriality and growth rates of yearling Atlantic salmon Salmo salar were examined in relation to predictability in food supply and habitat complexity, using replicate sections of a large‐scale controlled semi‐natural stream. 3. Estimated RMR was a strong predictor of dominance, and under conditions of a predictable food supply in a structurally simple habitat, high estimated RMR fish obtained the best feeding territories and grew faster. 4. When the spatial distribution of food was made less predictable, dominant (high estimated RMR) fish were still able to occupy the most profitable feeding locations by periodically moving location to track the changes in food availability, but RMR was no longer a predictor of growth rate. Moreover, when a less predictable food supply was combined with a visually more complex (and realistic) habitat, fish were unable to track changes in food availability, grew more slowly and exhibited greater site fidelity, and there were no relationships between estimated RMR and quality of occupied territory or growth rate. 5. The relative benefit of RMR is thus context dependent, depending on both habitat complexity and the predictability of the food supply. Higher habitat complexity and lower food predictability decrease the performance advantages associated with a high RMR. |
format |
Article in Journal/Newspaper |
author |
Reid, Donald Armstrong, John D. Metcalfe, Neil B. |
spellingShingle |
Reid, Donald Armstrong, John D. Metcalfe, Neil B. The performance advantage of a high resting metabolic rate in juvenile salmon is habitat dependent |
author_facet |
Reid, Donald Armstrong, John D. Metcalfe, Neil B. |
author_sort |
Reid, Donald |
title |
The performance advantage of a high resting metabolic rate in juvenile salmon is habitat dependent |
title_short |
The performance advantage of a high resting metabolic rate in juvenile salmon is habitat dependent |
title_full |
The performance advantage of a high resting metabolic rate in juvenile salmon is habitat dependent |
title_fullStr |
The performance advantage of a high resting metabolic rate in juvenile salmon is habitat dependent |
title_full_unstemmed |
The performance advantage of a high resting metabolic rate in juvenile salmon is habitat dependent |
title_sort |
performance advantage of a high resting metabolic rate in juvenile salmon is habitat dependent |
publisher |
Wiley |
publishDate |
2012 |
url |
http://dx.doi.org/10.1111/j.1365-2656.2012.01969.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2656.2012.01969.x https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2656.2012.01969.x |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Animal Ecology volume 81, issue 4, page 868-875 ISSN 0021-8790 1365-2656 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-2656.2012.01969.x |
container_title |
Journal of Animal Ecology |
container_volume |
81 |
container_issue |
4 |
container_start_page |
868 |
op_container_end_page |
875 |
_version_ |
1800748315622506496 |