Estimated standard metabolic rate interacts with territory quality and density to determine the growth rates of juvenile Atlantic salmon
Summary 1. Physiological traits can vary greatly within a species and consequently have a significant impact on other aspects of performance. Many species exhibit substantial variation in basal or standard metabolic rate (SMR), even after controlling for body size and age, yet the ecological consequ...
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crwiley:10.1111/j.1365-2435.2011.01894.x 2024-06-02T08:03:43+00:00 Estimated standard metabolic rate interacts with territory quality and density to determine the growth rates of juvenile Atlantic salmon Reid, Donald Armstrong, John D. Metcalfe, Neil B. 2011 http://dx.doi.org/10.1111/j.1365-2435.2011.01894.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2435.2011.01894.x https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2435.2011.01894.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Functional Ecology volume 25, issue 6, page 1360-1367 ISSN 0269-8463 1365-2435 journal-article 2011 crwiley https://doi.org/10.1111/j.1365-2435.2011.01894.x 2024-05-03T11:05:34Z Summary 1. Physiological traits can vary greatly within a species and consequently have a significant impact on other aspects of performance. Many species exhibit substantial variation in basal or standard metabolic rate (SMR), even after controlling for body size and age, yet the ecological consequences of this are little known. 2. We examined the relationships between mass‐specific SMR of yearling salmon (estimated from their ventilation rate) and their feeding and growth rates across a range of natural population densities within a semi‐natural stream environment. 3. Standard metabolic rate was strongly correlated with dominance rank, and higher ranking fish were more likely to acquire good feeding territories. Despite this, there was no overall relationship between SMR and growth. We show for the first time that this paradox can be explained because within territories of a given quality, there was a negative correlation between SMR and growth rate, presumably owing to the costs of metabolism. 4. These effects were also influenced by density: lower densities led to reduced aggression and competition and hence higher average feeding and growth rates. Moreover, at low densities, where availability of good feeding locations was not limiting, there was no relationship between SMR and growth. 5. As a result of these processes, there was a context‐dependent trade‐off in energy budgets: the fish achieving the greatest growth were those with the lowest SMR that was necessary to achieve dominance over conspecifics (and hence acquire a good territory), but this minimum threshold SMR increased with population density. These relationships and trade‐offs can explain the persistence of variation in SMR within populations. Article in Journal/Newspaper Atlantic salmon Wiley Online Library Functional Ecology 25 6 1360 1367 |
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English |
description |
Summary 1. Physiological traits can vary greatly within a species and consequently have a significant impact on other aspects of performance. Many species exhibit substantial variation in basal or standard metabolic rate (SMR), even after controlling for body size and age, yet the ecological consequences of this are little known. 2. We examined the relationships between mass‐specific SMR of yearling salmon (estimated from their ventilation rate) and their feeding and growth rates across a range of natural population densities within a semi‐natural stream environment. 3. Standard metabolic rate was strongly correlated with dominance rank, and higher ranking fish were more likely to acquire good feeding territories. Despite this, there was no overall relationship between SMR and growth. We show for the first time that this paradox can be explained because within territories of a given quality, there was a negative correlation between SMR and growth rate, presumably owing to the costs of metabolism. 4. These effects were also influenced by density: lower densities led to reduced aggression and competition and hence higher average feeding and growth rates. Moreover, at low densities, where availability of good feeding locations was not limiting, there was no relationship between SMR and growth. 5. As a result of these processes, there was a context‐dependent trade‐off in energy budgets: the fish achieving the greatest growth were those with the lowest SMR that was necessary to achieve dominance over conspecifics (and hence acquire a good territory), but this minimum threshold SMR increased with population density. These relationships and trade‐offs can explain the persistence of variation in SMR within populations. |
format |
Article in Journal/Newspaper |
author |
Reid, Donald Armstrong, John D. Metcalfe, Neil B. |
spellingShingle |
Reid, Donald Armstrong, John D. Metcalfe, Neil B. Estimated standard metabolic rate interacts with territory quality and density to determine the growth rates of juvenile Atlantic salmon |
author_facet |
Reid, Donald Armstrong, John D. Metcalfe, Neil B. |
author_sort |
Reid, Donald |
title |
Estimated standard metabolic rate interacts with territory quality and density to determine the growth rates of juvenile Atlantic salmon |
title_short |
Estimated standard metabolic rate interacts with territory quality and density to determine the growth rates of juvenile Atlantic salmon |
title_full |
Estimated standard metabolic rate interacts with territory quality and density to determine the growth rates of juvenile Atlantic salmon |
title_fullStr |
Estimated standard metabolic rate interacts with territory quality and density to determine the growth rates of juvenile Atlantic salmon |
title_full_unstemmed |
Estimated standard metabolic rate interacts with territory quality and density to determine the growth rates of juvenile Atlantic salmon |
title_sort |
estimated standard metabolic rate interacts with territory quality and density to determine the growth rates of juvenile atlantic salmon |
publisher |
Wiley |
publishDate |
2011 |
url |
http://dx.doi.org/10.1111/j.1365-2435.2011.01894.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2435.2011.01894.x https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2435.2011.01894.x |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
Functional Ecology volume 25, issue 6, page 1360-1367 ISSN 0269-8463 1365-2435 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-2435.2011.01894.x |
container_title |
Functional Ecology |
container_volume |
25 |
container_issue |
6 |
container_start_page |
1360 |
op_container_end_page |
1367 |
_version_ |
1800748316223340544 |