Thyroid hormones correlate with basal metabolic rate but not field metabolic rate in a wild bird species.

Thyroid hormones (TH) are known to stimulate in vitro oxygen consumption of tissues in mammals and birds. Hence, in many laboratory studies a positive relationship between TH concentrations and basal metabolic rate (BMR) has been demonstrated whereas evidence from species in the wild is scarce. Even...

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Autores principales:	Jorg Welcker, Olivier Chastel, Geir W Gabrielsen, Jerome Guillaumin, Alexander S Kitaysky, John R Speakman, Yann Tremblay, Claus Bech
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/768a3c439acb497fa34cf4d5411a5ff2
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spelling	oai:doaj.org-article:768a3c439acb497fa34cf4d5411a5ff22021-11-18T07:56:57ZThyroid hormones correlate with basal metabolic rate but not field metabolic rate in a wild bird species.1932-620310.1371/journal.pone.0056229https://doaj.org/article/768a3c439acb497fa34cf4d5411a5ff22013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23437096/?tool=EBIhttps://doaj.org/toc/1932-6203Thyroid hormones (TH) are known to stimulate in vitro oxygen consumption of tissues in mammals and birds. Hence, in many laboratory studies a positive relationship between TH concentrations and basal metabolic rate (BMR) has been demonstrated whereas evidence from species in the wild is scarce. Even though basal and field metabolic rates (FMR) are often thought to be intrinsically linked it is still unknown whether a relationship between TH and FMR exists. Here we determine the relationship between the primary thyroid hormone triiodothyronine (T3) with both BMR and FMR in a wild bird species, the black-legged kittiwake (Rissa tridactyla). As predicted we found a strong and positive relationship between plasma concentrations of T3 and both BMR and mass-independent BMR with coefficients of determination ranging from 0.36 to 0.60. In contrast there was no association of T3 levels with either whole-body or mass-independent FMR (R(2) =0.06 and 0.02, respectively). In accordance with in vitro studies our data suggests that TH play an important role in modulating BMR and may serve as a proxy for basal metabolism in wild birds. However, the lack of a relationship between TH and FMR indicates that levels of physical activity in kittiwakes are largely independent of TH concentrations and support recent studies that cast doubt on a direct linkage between BMR and FMR.Jorg WelckerOlivier ChastelGeir W GabrielsenJerome GuillauminAlexander S KitayskyJohn R SpeakmanYann TremblayClaus BechPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 2, p e56229 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jorg Welcker Olivier Chastel Geir W Gabrielsen Jerome Guillaumin Alexander S Kitaysky John R Speakman Yann Tremblay Claus Bech Thyroid hormones correlate with basal metabolic rate but not field metabolic rate in a wild bird species.
description	Thyroid hormones (TH) are known to stimulate in vitro oxygen consumption of tissues in mammals and birds. Hence, in many laboratory studies a positive relationship between TH concentrations and basal metabolic rate (BMR) has been demonstrated whereas evidence from species in the wild is scarce. Even though basal and field metabolic rates (FMR) are often thought to be intrinsically linked it is still unknown whether a relationship between TH and FMR exists. Here we determine the relationship between the primary thyroid hormone triiodothyronine (T3) with both BMR and FMR in a wild bird species, the black-legged kittiwake (Rissa tridactyla). As predicted we found a strong and positive relationship between plasma concentrations of T3 and both BMR and mass-independent BMR with coefficients of determination ranging from 0.36 to 0.60. In contrast there was no association of T3 levels with either whole-body or mass-independent FMR (R(2) =0.06 and 0.02, respectively). In accordance with in vitro studies our data suggests that TH play an important role in modulating BMR and may serve as a proxy for basal metabolism in wild birds. However, the lack of a relationship between TH and FMR indicates that levels of physical activity in kittiwakes are largely independent of TH concentrations and support recent studies that cast doubt on a direct linkage between BMR and FMR.
format	article
author	Jorg Welcker Olivier Chastel Geir W Gabrielsen Jerome Guillaumin Alexander S Kitaysky John R Speakman Yann Tremblay Claus Bech
author_facet	Jorg Welcker Olivier Chastel Geir W Gabrielsen Jerome Guillaumin Alexander S Kitaysky John R Speakman Yann Tremblay Claus Bech
author_sort	Jorg Welcker
title	Thyroid hormones correlate with basal metabolic rate but not field metabolic rate in a wild bird species.
title_short	Thyroid hormones correlate with basal metabolic rate but not field metabolic rate in a wild bird species.
title_full	Thyroid hormones correlate with basal metabolic rate but not field metabolic rate in a wild bird species.
title_fullStr	Thyroid hormones correlate with basal metabolic rate but not field metabolic rate in a wild bird species.
title_full_unstemmed	Thyroid hormones correlate with basal metabolic rate but not field metabolic rate in a wild bird species.
title_sort	thyroid hormones correlate with basal metabolic rate but not field metabolic rate in a wild bird species.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/768a3c439acb497fa34cf4d5411a5ff2
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Thyroid hormones correlate with basal metabolic rate but not field metabolic rate in a wild bird species.

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