Thyroid hormones correlate with resting metabolic rate, not daily energy expenditure, in two charadriiform seabirds
Thyroid hormones affect in vitro metabolic intensity, increase basal metabolic rate (BMR) in the lab, and are sometimes correlated with basal and/or resting metabolic rate (RMR) in a field environment. Given the difficulty of measuring metabolic rate in the field—and the likelihood that capture and...
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ftpubmed:oai:pubmedcentral.nih.gov:3683160 2023-05-15T15:44:57+02:00 Thyroid hormones correlate with resting metabolic rate, not daily energy expenditure, in two charadriiform seabirds Elliott, Kyle H. Welcker, Jorg Gaston, Anthony J. Hatch, Scott A. Palace, Vince Hare, James F. Speakman, John R. Anderson, W. Gary 2013-04-22 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3683160 http://www.ncbi.nlm.nih.gov/pubmed/23789108 https://doi.org/10.1242/bio.20134358 en eng The Company of Biologists http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3683160 http://www.ncbi.nlm.nih.gov/pubmed/23789108 http://dx.doi.org/10.1242/bio.20134358 © 2013. Published by The Company of Biologists Ltd http://creativecommons.org/licenses/by-nc-sa/3.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial Share Alike License (http://creativecommons.org/licenses/by-nc-sa/3.0/). CC-BY-NC-SA Research Article Text 2013 ftpubmed https://doi.org/10.1242/bio.20134358 2013-09-05T01:08:17Z Thyroid hormones affect in vitro metabolic intensity, increase basal metabolic rate (BMR) in the lab, and are sometimes correlated with basal and/or resting metabolic rate (RMR) in a field environment. Given the difficulty of measuring metabolic rate in the field—and the likelihood that capture and long-term restraint necessary to measure metabolic rate in the field jeopardizes other measurements—we examined the possibility that circulating thyroid hormone levels were correlated with RMR in two free-ranging bird species with high levels of energy expenditure (the black-legged kittiwake, Rissa tridactyla, and thick-billed murre, Uria lomvia). Because BMR and daily energy expenditure (DEE) are purported to be linked, we also tested for a correlation between thyroid hormones and DEE. We examined the relationships between free and bound levels of the thyroid hormones thyroxine (T4) and triiodothyronine (T3) with DEE and with 4-hour long measurements of post-absorptive and thermoneutral resting metabolism (resting metabolic rate; RMR). RMR but not DEE increased with T3 in both species; both metabolic rates were independent of T4. T3 and T4 were not correlated with one another. DEE correlated with body mass in kittiwakes but not in murres, presumably owing to the larger coefficient of variation in body mass during chick rearing for the more sexually dimorphic kittiwakes. We suggest T3 provides a good proxy for resting metabolism but not DEE in these seabird species. Text Black-legged Kittiwake rissa tridactyla thick-billed murre Uria lomvia uria PubMed Central (PMC) Dee ENVELOPE(-59.767,-59.767,-62.433,-62.433) Biology Open 2 6 580 586 |
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Research Article Elliott, Kyle H. Welcker, Jorg Gaston, Anthony J. Hatch, Scott A. Palace, Vince Hare, James F. Speakman, John R. Anderson, W. Gary Thyroid hormones correlate with resting metabolic rate, not daily energy expenditure, in two charadriiform seabirds |
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Research Article |
description |
Thyroid hormones affect in vitro metabolic intensity, increase basal metabolic rate (BMR) in the lab, and are sometimes correlated with basal and/or resting metabolic rate (RMR) in a field environment. Given the difficulty of measuring metabolic rate in the field—and the likelihood that capture and long-term restraint necessary to measure metabolic rate in the field jeopardizes other measurements—we examined the possibility that circulating thyroid hormone levels were correlated with RMR in two free-ranging bird species with high levels of energy expenditure (the black-legged kittiwake, Rissa tridactyla, and thick-billed murre, Uria lomvia). Because BMR and daily energy expenditure (DEE) are purported to be linked, we also tested for a correlation between thyroid hormones and DEE. We examined the relationships between free and bound levels of the thyroid hormones thyroxine (T4) and triiodothyronine (T3) with DEE and with 4-hour long measurements of post-absorptive and thermoneutral resting metabolism (resting metabolic rate; RMR). RMR but not DEE increased with T3 in both species; both metabolic rates were independent of T4. T3 and T4 were not correlated with one another. DEE correlated with body mass in kittiwakes but not in murres, presumably owing to the larger coefficient of variation in body mass during chick rearing for the more sexually dimorphic kittiwakes. We suggest T3 provides a good proxy for resting metabolism but not DEE in these seabird species. |
format |
Text |
author |
Elliott, Kyle H. Welcker, Jorg Gaston, Anthony J. Hatch, Scott A. Palace, Vince Hare, James F. Speakman, John R. Anderson, W. Gary |
author_facet |
Elliott, Kyle H. Welcker, Jorg Gaston, Anthony J. Hatch, Scott A. Palace, Vince Hare, James F. Speakman, John R. Anderson, W. Gary |
author_sort |
Elliott, Kyle H. |
title |
Thyroid hormones correlate with resting metabolic rate, not daily energy expenditure, in two charadriiform seabirds |
title_short |
Thyroid hormones correlate with resting metabolic rate, not daily energy expenditure, in two charadriiform seabirds |
title_full |
Thyroid hormones correlate with resting metabolic rate, not daily energy expenditure, in two charadriiform seabirds |
title_fullStr |
Thyroid hormones correlate with resting metabolic rate, not daily energy expenditure, in two charadriiform seabirds |
title_full_unstemmed |
Thyroid hormones correlate with resting metabolic rate, not daily energy expenditure, in two charadriiform seabirds |
title_sort |
thyroid hormones correlate with resting metabolic rate, not daily energy expenditure, in two charadriiform seabirds |
publisher |
The Company of Biologists |
publishDate |
2013 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3683160 http://www.ncbi.nlm.nih.gov/pubmed/23789108 https://doi.org/10.1242/bio.20134358 |
long_lat |
ENVELOPE(-59.767,-59.767,-62.433,-62.433) |
geographic |
Dee |
geographic_facet |
Dee |
genre |
Black-legged Kittiwake rissa tridactyla thick-billed murre Uria lomvia uria |
genre_facet |
Black-legged Kittiwake rissa tridactyla thick-billed murre Uria lomvia uria |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3683160 http://www.ncbi.nlm.nih.gov/pubmed/23789108 http://dx.doi.org/10.1242/bio.20134358 |
op_rights |
© 2013. Published by The Company of Biologists Ltd http://creativecommons.org/licenses/by-nc-sa/3.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial Share Alike License (http://creativecommons.org/licenses/by-nc-sa/3.0/). |
op_rightsnorm |
CC-BY-NC-SA |
op_doi |
https://doi.org/10.1242/bio.20134358 |
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Biology Open |
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