Metabolic traits in brown trout (Salmo trutta) vary in response to food restriction and intrinsic factors
Metabolic rates vary hugely within and between populations, yet we know relatively little about factors causing intraspecific variation. Since metabolic rate determines the energetic cost of life, uncovering these sources of variation is important to understand and forecast responses to environmenta...
Published in: | Conservation Physiology |
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Oxford University Press
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Online Access: | http://hdl.handle.net/10468/11530 https://doi.org/10.1093/conphys/coaa096 |
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ftunivcollcork:oai:cora.ucc.ie:10468/11530 2023-08-27T04:08:33+02:00 Metabolic traits in brown trout (Salmo trutta) vary in response to food restriction and intrinsic factors Archer, Louise C. Hutton, Stephen A. Harman, Luke Poole, W. Russell Gargan, Patrick McGinnity, Philip Reed, Thomas E. 2020-10-14 application/pdf http://hdl.handle.net/10468/11530 https://doi.org/10.1093/conphys/coaa096 en eng Oxford University Press info:eu-repo/grantAgreement/EC/H2020::ERC::ERC-STG/639192/EU/Alternative life histories: linking genes to phenotypes to demography/ALH https://academic.oup.com/conphys/article/8/1/coaa096/5924230#208611723 coaa096 Archer, L. C., Hutton, S. A., Harman, L., Poole, W. R., Gargan, P., McGinnity, P. and Reed, T. E. (2020) 'Metabolic traits in brown trout (Salmo trutta) vary in response to food restriction and intrinsic factors', Conservation Physiology, 8 (1), coaa096, (17 pp). doi:10.1093/conphys/coaa096 doi:10.1093/conphys/coaa096 17 2051-1434 1 Conservation Physiology http://hdl.handle.net/10468/11530 8 © The Author(s) 2020. Published by Oxford University Press and the Society for Experimental Biology. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. http://creativecommons.org/licenses/by/4.0/ Anadromy Climate change Metabolism Partial migration Phenotypic flexibility Plasticity Juvenile atlantic salmon Life-history traits Intraspecific variation Individual variation Aerobic scope Thermal acclimation Oncorhynchus nerka Swimming capacity Article (peer-reviewed) 2020 ftunivcollcork https://doi.org/10.1093/conphys/coaa096 2023-08-06T14:29:16Z Metabolic rates vary hugely within and between populations, yet we know relatively little about factors causing intraspecific variation. Since metabolic rate determines the energetic cost of life, uncovering these sources of variation is important to understand and forecast responses to environmental change. Moreover, few studies have examined factors causing intraspecific variation in metabolic flexibility. We explore how extrinsic environmental conditions and intrinsic factors contribute to variation in metabolic traits in brown trout, an iconic and polymorphic species that is threatened across much of its native range. We measured metabolic traits in offspring from two wild populations that naturally show life-history variation in migratory tactics (one anadromous, i.e. sea-migratory, one non-anadromous) that we reared under either optimal food or experimental conditions of long-term food restriction (lasting between 7 and 17 months). Both populations showed decreased standard metabolic rates (SMR—baseline energy requirements) under low food conditions. The anadromous population had higher maximum metabolic rate (MMR) than the non-anadromous population, and marginally higher SMR. The MMR difference was greater than SMR and consequently aerobic scope (AS) was higher in the anadromous population. MMR and AS were both higher in males than females. The anadromous population also had higher AS under low food compared to optimal food conditions, consistent with population-specific effects of food restriction on AS. Our results suggest different components of metabolic rate can vary in their response to environmental conditions, and according to intrinsic (population-background/sex) effects. Populations might further differ in their flexibility of metabolic traits, potentially due to intrinsic factors related to life history (e.g. migratory tactics). More comparisons of populations/individuals with divergent life histories will help to reveal this. Overall, our study suggests that incorporating an understanding of ... Article in Journal/Newspaper Atlantic salmon University College Cork, Ireland: Cork Open Research Archive (CORA) Conservation Physiology 8 1 |
institution |
Open Polar |
collection |
University College Cork, Ireland: Cork Open Research Archive (CORA) |
op_collection_id |
ftunivcollcork |
language |
English |
topic |
Anadromy Climate change Metabolism Partial migration Phenotypic flexibility Plasticity Juvenile atlantic salmon Life-history traits Intraspecific variation Individual variation Aerobic scope Thermal acclimation Oncorhynchus nerka Swimming capacity |
spellingShingle |
Anadromy Climate change Metabolism Partial migration Phenotypic flexibility Plasticity Juvenile atlantic salmon Life-history traits Intraspecific variation Individual variation Aerobic scope Thermal acclimation Oncorhynchus nerka Swimming capacity Archer, Louise C. Hutton, Stephen A. Harman, Luke Poole, W. Russell Gargan, Patrick McGinnity, Philip Reed, Thomas E. Metabolic traits in brown trout (Salmo trutta) vary in response to food restriction and intrinsic factors |
topic_facet |
Anadromy Climate change Metabolism Partial migration Phenotypic flexibility Plasticity Juvenile atlantic salmon Life-history traits Intraspecific variation Individual variation Aerobic scope Thermal acclimation Oncorhynchus nerka Swimming capacity |
description |
Metabolic rates vary hugely within and between populations, yet we know relatively little about factors causing intraspecific variation. Since metabolic rate determines the energetic cost of life, uncovering these sources of variation is important to understand and forecast responses to environmental change. Moreover, few studies have examined factors causing intraspecific variation in metabolic flexibility. We explore how extrinsic environmental conditions and intrinsic factors contribute to variation in metabolic traits in brown trout, an iconic and polymorphic species that is threatened across much of its native range. We measured metabolic traits in offspring from two wild populations that naturally show life-history variation in migratory tactics (one anadromous, i.e. sea-migratory, one non-anadromous) that we reared under either optimal food or experimental conditions of long-term food restriction (lasting between 7 and 17 months). Both populations showed decreased standard metabolic rates (SMR—baseline energy requirements) under low food conditions. The anadromous population had higher maximum metabolic rate (MMR) than the non-anadromous population, and marginally higher SMR. The MMR difference was greater than SMR and consequently aerobic scope (AS) was higher in the anadromous population. MMR and AS were both higher in males than females. The anadromous population also had higher AS under low food compared to optimal food conditions, consistent with population-specific effects of food restriction on AS. Our results suggest different components of metabolic rate can vary in their response to environmental conditions, and according to intrinsic (population-background/sex) effects. Populations might further differ in their flexibility of metabolic traits, potentially due to intrinsic factors related to life history (e.g. migratory tactics). More comparisons of populations/individuals with divergent life histories will help to reveal this. Overall, our study suggests that incorporating an understanding of ... |
format |
Article in Journal/Newspaper |
author |
Archer, Louise C. Hutton, Stephen A. Harman, Luke Poole, W. Russell Gargan, Patrick McGinnity, Philip Reed, Thomas E. |
author_facet |
Archer, Louise C. Hutton, Stephen A. Harman, Luke Poole, W. Russell Gargan, Patrick McGinnity, Philip Reed, Thomas E. |
author_sort |
Archer, Louise C. |
title |
Metabolic traits in brown trout (Salmo trutta) vary in response to food restriction and intrinsic factors |
title_short |
Metabolic traits in brown trout (Salmo trutta) vary in response to food restriction and intrinsic factors |
title_full |
Metabolic traits in brown trout (Salmo trutta) vary in response to food restriction and intrinsic factors |
title_fullStr |
Metabolic traits in brown trout (Salmo trutta) vary in response to food restriction and intrinsic factors |
title_full_unstemmed |
Metabolic traits in brown trout (Salmo trutta) vary in response to food restriction and intrinsic factors |
title_sort |
metabolic traits in brown trout (salmo trutta) vary in response to food restriction and intrinsic factors |
publisher |
Oxford University Press |
publishDate |
2020 |
url |
http://hdl.handle.net/10468/11530 https://doi.org/10.1093/conphys/coaa096 |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_relation |
info:eu-repo/grantAgreement/EC/H2020::ERC::ERC-STG/639192/EU/Alternative life histories: linking genes to phenotypes to demography/ALH https://academic.oup.com/conphys/article/8/1/coaa096/5924230#208611723 coaa096 Archer, L. C., Hutton, S. A., Harman, L., Poole, W. R., Gargan, P., McGinnity, P. and Reed, T. E. (2020) 'Metabolic traits in brown trout (Salmo trutta) vary in response to food restriction and intrinsic factors', Conservation Physiology, 8 (1), coaa096, (17 pp). doi:10.1093/conphys/coaa096 doi:10.1093/conphys/coaa096 17 2051-1434 1 Conservation Physiology http://hdl.handle.net/10468/11530 8 |
op_rights |
© The Author(s) 2020. Published by Oxford University Press and the Society for Experimental Biology. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1093/conphys/coaa096 |
container_title |
Conservation Physiology |
container_volume |
8 |
container_issue |
1 |
_version_ |
1775349362902171648 |