Hormonal correlates of the annual cycle of activity and body temperature in the South-American tegu lizard (Salvator merianae)

Detalhes bibliográficos
Autor(a) principal: Zena, Lucas A.
Data de Publicação: 2020
Outros Autores: Dillon, Danielle, Hunt, Kathleen E., Navas, Carlos A., Buck, C. Loren, Bicego, Kenia C. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.ygcen.2019.113295
http://hdl.handle.net/11449/196440
Resumo: Life history transitions and hormones are known to interact and influence many aspects of animal physiology and behavior. The South-American tegu lizard (Salvator merianae) exhibits a profound seasonal shift in metabolism and body temperature, characterized by high daily activity during warmer months, including reproductive endothermy in spring, and metabolic suppression during hibernation in winter. This makes S. merianae an interesting subject for studies of interrelationships between endocrinology and seasonal changes in physiology/behavior. We investigated how plasma concentrations of hormones involved in regulation of energy metabolism (thyroid hormones T-4 and T-3; corticosterone) and reproduction (testosterone in males and estrogen/progesterone in females) correlate with activity and body temperature (Tb) across the annual cycle of captive held S. merianae in semi-natural conditions. In our initial model, thyroid hormones and corticosterone showed a positive relationship with activity and Tb with independent of sex: T-3 positively correlated with activity and Tb, while T-4 and corticosterone correlated positively with changes in Tb only. This suggests that thyroid hormones and glucocorticoids may be involved in metabolic transitions of annual cycle events. When accounting for sex-steroid hormones, our sex separated models showed a positive relationship between testosterone and Tb in males and progesterone and activity in females. Coupling seasonal endocrine measures with activity and Tb may expand our understanding of the relationship between animal's physiology and its environment. Manipulative experiments are required in order to unveil the directionality of influences existing among abiotic factors and the hormonal signaling of annual cyclicity in physiology/behavior.
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spelling Hormonal correlates of the annual cycle of activity and body temperature in the South-American tegu lizard (Salvator merianae)ActivityBody temperatureCorticosteroneHibernationProgesteroneTestosteroneThyroid hormonesLife history transitions and hormones are known to interact and influence many aspects of animal physiology and behavior. The South-American tegu lizard (Salvator merianae) exhibits a profound seasonal shift in metabolism and body temperature, characterized by high daily activity during warmer months, including reproductive endothermy in spring, and metabolic suppression during hibernation in winter. This makes S. merianae an interesting subject for studies of interrelationships between endocrinology and seasonal changes in physiology/behavior. We investigated how plasma concentrations of hormones involved in regulation of energy metabolism (thyroid hormones T-4 and T-3; corticosterone) and reproduction (testosterone in males and estrogen/progesterone in females) correlate with activity and body temperature (Tb) across the annual cycle of captive held S. merianae in semi-natural conditions. In our initial model, thyroid hormones and corticosterone showed a positive relationship with activity and Tb with independent of sex: T-3 positively correlated with activity and Tb, while T-4 and corticosterone correlated positively with changes in Tb only. This suggests that thyroid hormones and glucocorticoids may be involved in metabolic transitions of annual cycle events. When accounting for sex-steroid hormones, our sex separated models showed a positive relationship between testosterone and Tb in males and progesterone and activity in females. Coupling seasonal endocrine measures with activity and Tb may expand our understanding of the relationship between animal's physiology and its environment. Manipulative experiments are required in order to unveil the directionality of influences existing among abiotic factors and the hormonal signaling of annual cyclicity in physiology/behavior.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)University of Alaska Anchorage Environment and Natural Resources Institute, United States and Northern Arizona University, United StatesUniv Sao Paulo, Inst Biosci, Dept Physiol, BR-05508090 Sao Paulo, SP, BrazilSao Paulo State Univ, Coll Agr & Vet Sci, Dept Anim Morphol & Physiol, BR-14884900 Jaboticabal, SP, BrazilNo Arizona Univ, Dept Biol Sci, Box 5640, Flagstaff, AZ 86011 USAGeorge Mason Univ, Dept Biol, Fairfax, VA 22030 USASao Paulo State Univ, Coll Agr & Vet Sci, Dept Anim Morphol & Physiol, BR-14884900 Jaboticabal, SP, BrazilFAPESP: 2017/01652-2FAPESP: 2018/06192-2FAPESP: 2015/04849-6FAPESP: 2014/16320-7Elsevier B.V.Universidade de São Paulo (USP)Universidade Estadual Paulista (Unesp)No Arizona UnivGeorge Mason UnivZena, Lucas A.Dillon, DanielleHunt, Kathleen E.Navas, Carlos A.Buck, C. LorenBicego, Kenia C. [UNESP]2020-12-10T19:45:00Z2020-12-10T19:45:00Z2020-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10http://dx.doi.org/10.1016/j.ygcen.2019.113295General And Comparative Endocrinology. San Diego: Academic Press Inc Elsevier Science, v. 285, 10 p., 2020.0016-6480http://hdl.handle.net/11449/19644010.1016/j.ygcen.2019.113295WOS:000504341800021Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengGeneral And Comparative Endocrinologyinfo:eu-repo/semantics/openAccess2024-06-06T18:42:12Zoai:repositorio.unesp.br:11449/196440Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:32:54.118084Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Hormonal correlates of the annual cycle of activity and body temperature in the South-American tegu lizard (Salvator merianae)
title Hormonal correlates of the annual cycle of activity and body temperature in the South-American tegu lizard (Salvator merianae)
spellingShingle Hormonal correlates of the annual cycle of activity and body temperature in the South-American tegu lizard (Salvator merianae)
Zena, Lucas A.
Activity
Body temperature
Corticosterone
Hibernation
Progesterone
Testosterone
Thyroid hormones
title_short Hormonal correlates of the annual cycle of activity and body temperature in the South-American tegu lizard (Salvator merianae)
title_full Hormonal correlates of the annual cycle of activity and body temperature in the South-American tegu lizard (Salvator merianae)
title_fullStr Hormonal correlates of the annual cycle of activity and body temperature in the South-American tegu lizard (Salvator merianae)
title_full_unstemmed Hormonal correlates of the annual cycle of activity and body temperature in the South-American tegu lizard (Salvator merianae)
title_sort Hormonal correlates of the annual cycle of activity and body temperature in the South-American tegu lizard (Salvator merianae)
author Zena, Lucas A.
author_facet Zena, Lucas A.
Dillon, Danielle
Hunt, Kathleen E.
Navas, Carlos A.
Buck, C. Loren
Bicego, Kenia C. [UNESP]
author_role author
author2 Dillon, Danielle
Hunt, Kathleen E.
Navas, Carlos A.
Buck, C. Loren
Bicego, Kenia C. [UNESP]
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade de São Paulo (USP)
Universidade Estadual Paulista (Unesp)
No Arizona Univ
George Mason Univ
dc.contributor.author.fl_str_mv Zena, Lucas A.
Dillon, Danielle
Hunt, Kathleen E.
Navas, Carlos A.
Buck, C. Loren
Bicego, Kenia C. [UNESP]
dc.subject.por.fl_str_mv Activity
Body temperature
Corticosterone
Hibernation
Progesterone
Testosterone
Thyroid hormones
topic Activity
Body temperature
Corticosterone
Hibernation
Progesterone
Testosterone
Thyroid hormones
description Life history transitions and hormones are known to interact and influence many aspects of animal physiology and behavior. The South-American tegu lizard (Salvator merianae) exhibits a profound seasonal shift in metabolism and body temperature, characterized by high daily activity during warmer months, including reproductive endothermy in spring, and metabolic suppression during hibernation in winter. This makes S. merianae an interesting subject for studies of interrelationships between endocrinology and seasonal changes in physiology/behavior. We investigated how plasma concentrations of hormones involved in regulation of energy metabolism (thyroid hormones T-4 and T-3; corticosterone) and reproduction (testosterone in males and estrogen/progesterone in females) correlate with activity and body temperature (Tb) across the annual cycle of captive held S. merianae in semi-natural conditions. In our initial model, thyroid hormones and corticosterone showed a positive relationship with activity and Tb with independent of sex: T-3 positively correlated with activity and Tb, while T-4 and corticosterone correlated positively with changes in Tb only. This suggests that thyroid hormones and glucocorticoids may be involved in metabolic transitions of annual cycle events. When accounting for sex-steroid hormones, our sex separated models showed a positive relationship between testosterone and Tb in males and progesterone and activity in females. Coupling seasonal endocrine measures with activity and Tb may expand our understanding of the relationship between animal's physiology and its environment. Manipulative experiments are required in order to unveil the directionality of influences existing among abiotic factors and the hormonal signaling of annual cyclicity in physiology/behavior.
publishDate 2020
dc.date.none.fl_str_mv 2020-12-10T19:45:00Z
2020-12-10T19:45:00Z
2020-01-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1016/j.ygcen.2019.113295
General And Comparative Endocrinology. San Diego: Academic Press Inc Elsevier Science, v. 285, 10 p., 2020.
0016-6480
http://hdl.handle.net/11449/196440
10.1016/j.ygcen.2019.113295
WOS:000504341800021
url http://dx.doi.org/10.1016/j.ygcen.2019.113295
http://hdl.handle.net/11449/196440
identifier_str_mv General And Comparative Endocrinology. San Diego: Academic Press Inc Elsevier Science, v. 285, 10 p., 2020.
0016-6480
10.1016/j.ygcen.2019.113295
WOS:000504341800021
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv General And Comparative Endocrinology
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 10
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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