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dc.contributor.author
Vera, Federico
dc.contributor.author
Zenuto, Roxana Rita
dc.contributor.author
Antenucci, Carlos Daniel
dc.date.available
2017-09-26T17:59:39Z
dc.date.issued
2013-02
dc.identifier.citation
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
dc.identifier.issn
0952-8369
dc.identifier.uri
http://hdl.handle.net/11336/25141
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Zoological Society of London
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Cortisol
dc.subject
Free-Living
dc.subject
Hpa Axis
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Progesterone
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Seasonal Variation
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Testosterone
dc.subject.classification
Bioquímica y Biología Molecular
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Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Seasonal variations in plasma cortisol, testosterone, progesterone and leukocyte profiles in a wild population of tuco-tucos
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-09-21T18:01:29Z
dc.journal.volume
289
dc.journal.number
2
dc.journal.pagination
111-118
dc.journal.pais
Reino Unido
dc.journal.ciudad
London
dc.description.fil
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
dc.description.fil
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
dc.description.fil
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
dc.journal.title
Journal Of Zoology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/j.1469-7998.2012.00967.x
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/j.1469-7998.2012.00967.x/abstract
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