Seasonal variations in plasma cortisol, testosterone, progesterone and leukocyte profiles in a wild population of tuco-tucos

Autores
Vera, Federico; Zenuto, Roxana Rita; Antenucci, Carlos Daniel
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Studies addressing seasonal changes in hormone levels are important in order to understand the interplays between ecology and physiology. In this study, we evaluated seasonal variations in cortisol, testosterone, and progesterone plasma levels in males and females of the subterranean rodent Ctenomys talarum. For the case of females, we also aimed to evaluate their capacity to increase their plasma cortisol concentrations in response to capture and restraint during reproductive and non-reproductive seasons. In addition, we registered concomitant seasonal variations in the neutrophil to lymphocyte ratio (N:L) aimed to discriminate between basal and stress-induced seasonal changes in cortisol levels in both males and females. Both basal and stressed-induced cortisol levels were significantly higher in reproductive than non-reproductive females. For the case of males, cortisol levels were also higher during the reproductive season, though values were two- to threefold lower than in females. The N:L ratios attained low values, typical of unstressed animals, in both males and females, indicating that the animals were not facing acute or chronic stressors at the moment of their capture. Testosterone levels in males were significantly elevated in relation to other mammals reaching up to 486 ng mL-1, with significantly higher levels during the reproductive season (mean: 209.45 177.76 ng mL-1) and a remarkable inter-individual variation. On the other hand, progesterone levels in females captured during reproductive and non-reproductive seasons were not significantly different. This study shows that seasonal modulation in testosterone and also in baseline and stress-induced cortisol levels occurs in tuco-tucos associated with reproduction.
Fil: Vera, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Zenuto, Roxana Rita. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Antenucci, Carlos Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Materia
Cortisol
Free-Living
Hpa Axis
Progesterone
Seasonal Variation
Testosterone
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/25141
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/25141
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Seasonal variations in plasma cortisol, testosterone, progesterone and leukocyte profiles in a wild population of tuco-tucosVera, FedericoZenuto, Roxana RitaAntenucci, Carlos DanielCortisolFree-LivingHpa AxisProgesteroneSeasonal VariationTestosteronehttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Studies addressing seasonal changes in hormone levels are important in order to understand the interplays between ecology and physiology. In this study, we evaluated seasonal variations in cortisol, testosterone, and progesterone plasma levels in males and females of the subterranean rodent Ctenomys talarum. For the case of females, we also aimed to evaluate their capacity to increase their plasma cortisol concentrations in response to capture and restraint during reproductive and non-reproductive seasons. In addition, we registered concomitant seasonal variations in the neutrophil to lymphocyte ratio (N:L) aimed to discriminate between basal and stress-induced seasonal changes in cortisol levels in both males and females. Both basal and stressed-induced cortisol levels were significantly higher in reproductive than non-reproductive females. For the case of males, cortisol levels were also higher during the reproductive season, though values were two- to threefold lower than in females. The N:L ratios attained low values, typical of unstressed animals, in both males and females, indicating that the animals were not facing acute or chronic stressors at the moment of their capture. Testosterone levels in males were significantly elevated in relation to other mammals reaching up to 486 ng mL-1, with significantly higher levels during the reproductive season (mean: 209.45 177.76 ng mL-1) and a remarkable inter-individual variation. On the other hand, progesterone levels in females captured during reproductive and non-reproductive seasons were not significantly different. This study shows that seasonal modulation in testosterone and also in baseline and stress-induced cortisol levels occurs in tuco-tucos associated with reproduction.Fil: Vera, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Zenuto, Roxana Rita. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Antenucci, Carlos Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaZoological Society of London2013-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/25141Vera, Federico; Zenuto, Roxana Rita; Antenucci, Carlos Daniel; Seasonal variations in plasma cortisol, testosterone, progesterone and leukocyte profiles in a wild population of tuco-tucos; Zoological Society of London; Journal Of Zoology; 289; 2; 2-2013; 111-1180952-8369CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1469-7998.2012.00967.xinfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/j.1469-7998.2012.00967.x/abstractinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:51:56Zoai:ri.conicet.gov.ar:11336/25141instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:51:56.963CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Seasonal variations in plasma cortisol, testosterone, progesterone and leukocyte profiles in a wild population of tuco-tucos
title Seasonal variations in plasma cortisol, testosterone, progesterone and leukocyte profiles in a wild population of tuco-tucos
spellingShingle Seasonal variations in plasma cortisol, testosterone, progesterone and leukocyte profiles in a wild population of tuco-tucos
Vera, Federico
Cortisol
Free-Living
Hpa Axis
Progesterone
Seasonal Variation
Testosterone
title_short Seasonal variations in plasma cortisol, testosterone, progesterone and leukocyte profiles in a wild population of tuco-tucos
title_full Seasonal variations in plasma cortisol, testosterone, progesterone and leukocyte profiles in a wild population of tuco-tucos
title_fullStr Seasonal variations in plasma cortisol, testosterone, progesterone and leukocyte profiles in a wild population of tuco-tucos
title_full_unstemmed Seasonal variations in plasma cortisol, testosterone, progesterone and leukocyte profiles in a wild population of tuco-tucos
title_sort Seasonal variations in plasma cortisol, testosterone, progesterone and leukocyte profiles in a wild population of tuco-tucos
dc.creator.none.fl_str_mv Vera, Federico
Zenuto, Roxana Rita
Antenucci, Carlos Daniel
author Vera, Federico
author_facet Vera, Federico
Zenuto, Roxana Rita
Antenucci, Carlos Daniel
author_role author
author2 Zenuto, Roxana Rita
Antenucci, Carlos Daniel
author2_role author
author
dc.subject.none.fl_str_mv Cortisol
Free-Living
Hpa Axis
Progesterone
Seasonal Variation
Testosterone
topic Cortisol
Free-Living
Hpa Axis
Progesterone
Seasonal Variation
Testosterone
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Studies addressing seasonal changes in hormone levels are important in order to understand the interplays between ecology and physiology. In this study, we evaluated seasonal variations in cortisol, testosterone, and progesterone plasma levels in males and females of the subterranean rodent Ctenomys talarum. For the case of females, we also aimed to evaluate their capacity to increase their plasma cortisol concentrations in response to capture and restraint during reproductive and non-reproductive seasons. In addition, we registered concomitant seasonal variations in the neutrophil to lymphocyte ratio (N:L) aimed to discriminate between basal and stress-induced seasonal changes in cortisol levels in both males and females. Both basal and stressed-induced cortisol levels were significantly higher in reproductive than non-reproductive females. For the case of males, cortisol levels were also higher during the reproductive season, though values were two- to threefold lower than in females. The N:L ratios attained low values, typical of unstressed animals, in both males and females, indicating that the animals were not facing acute or chronic stressors at the moment of their capture. Testosterone levels in males were significantly elevated in relation to other mammals reaching up to 486 ng mL-1, with significantly higher levels during the reproductive season (mean: 209.45 177.76 ng mL-1) and a remarkable inter-individual variation. On the other hand, progesterone levels in females captured during reproductive and non-reproductive seasons were not significantly different. This study shows that seasonal modulation in testosterone and also in baseline and stress-induced cortisol levels occurs in tuco-tucos associated with reproduction.
Fil: Vera, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Zenuto, Roxana Rita. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Antenucci, Carlos Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
description Studies addressing seasonal changes in hormone levels are important in order to understand the interplays between ecology and physiology. In this study, we evaluated seasonal variations in cortisol, testosterone, and progesterone plasma levels in males and females of the subterranean rodent Ctenomys talarum. For the case of females, we also aimed to evaluate their capacity to increase their plasma cortisol concentrations in response to capture and restraint during reproductive and non-reproductive seasons. In addition, we registered concomitant seasonal variations in the neutrophil to lymphocyte ratio (N:L) aimed to discriminate between basal and stress-induced seasonal changes in cortisol levels in both males and females. Both basal and stressed-induced cortisol levels were significantly higher in reproductive than non-reproductive females. For the case of males, cortisol levels were also higher during the reproductive season, though values were two- to threefold lower than in females. The N:L ratios attained low values, typical of unstressed animals, in both males and females, indicating that the animals were not facing acute or chronic stressors at the moment of their capture. Testosterone levels in males were significantly elevated in relation to other mammals reaching up to 486 ng mL-1, with significantly higher levels during the reproductive season (mean: 209.45 177.76 ng mL-1) and a remarkable inter-individual variation. On the other hand, progesterone levels in females captured during reproductive and non-reproductive seasons were not significantly different. This study shows that seasonal modulation in testosterone and also in baseline and stress-induced cortisol levels occurs in tuco-tucos associated with reproduction.
publishDate 2013
dc.date.none.fl_str_mv 2013-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/25141
Vera, Federico; Zenuto, Roxana Rita; Antenucci, Carlos Daniel; Seasonal variations in plasma cortisol, testosterone, progesterone and leukocyte profiles in a wild population of tuco-tucos; Zoological Society of London; Journal Of Zoology; 289; 2; 2-2013; 111-118
0952-8369
CONICET Digital
CONICET
url http://hdl.handle.net/11336/25141
identifier_str_mv Vera, Federico; Zenuto, Roxana Rita; Antenucci, Carlos Daniel; Seasonal variations in plasma cortisol, testosterone, progesterone and leukocyte profiles in a wild population of tuco-tucos; Zoological Society of London; Journal Of Zoology; 289; 2; 2-2013; 111-118
0952-8369
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1469-7998.2012.00967.x
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/j.1469-7998.2012.00967.x/abstract
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Zoological Society of London
publisher.none.fl_str_mv Zoological Society of London
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842269125315919872
score 13.13397

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