Thyroxine administration at the end of the rutting season does not affect testosterone secretion or horn growth in the Iberian ibex (Capra pyrenaica)

Thyroid hormones play a role in the control of seasonal reproduction in wild and domestic ruminants such as red deer and sheep. Horn growth shows an inverse relationship with reproductive activity, but the effect of thyroid function on the regulation of the seasonal pattern of horn growth is unknown...

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Detalles Bibliográficos
Autores: Rodríguez Luis, Adriana , Toledano Díaz, Adolfo, Velázquez, Rosario , López Sebastián, Antonio, Mogedas Moreno, María, Santiago Moreno, Julián 
Tipo de recurso: artículo
Fecha de publicación:2024
País:España
Institución:Universidad Alfonso X el Sabio
Repositorio:Repositorio Institucional de la Universidad Alfonso X el Sabio
Idioma:español
OAI Identifier:oai:archive.uax.com:20.500.12080/44784
Acceso en línea:https://hdl.handle.net/20.500.12080/44784
Access Level:acceso abierto
Palabra clave:Horn · Rutting season · Iberian ibex · Thyroid hormones · Wild bovid
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spelling Thyroxine administration at the end of the rutting season does not affect testosterone secretion or horn growth in the Iberian ibex (Capra pyrenaica)Rodríguez Luis, Adriana Toledano Díaz, AdolfoVelázquez, Rosario López Sebastián, AntonioMogedas Moreno, MaríaSantiago Moreno, Julián Horn · Rutting season · Iberian ibex · Thyroid hormones · Wild bovidThyroid hormones play a role in the control of seasonal reproduction in wild and domestic ruminants such as red deer and sheep. Horn growth shows an inverse relationship with reproductive activity, but the effect of thyroid function on the regulation of the seasonal pattern of horn growth is unknown. This work examines the seasonal pattern of plasma thyroxine concentration, and its effect on testosterone secretion and seasonal changes in horn growth, in male Iberian ibexes (Capra pyrenaica). Plasma testosterone, plasma thyroxine, and horn growth were measured over a year in four males kept under natural photoperiod conditions. In another four, thyroxine was administered coinciding with the period of physiological reduc tion in plasma testosterone (January¿February). In the first four, seasonal changes in the plasma concentration of thyroxine were detected with the highest concentrations recorded in October, November, and December, coinciding with the greatest testosterone secretion. In the second four, thyroxine treatment affected neither plasma testosterone concentration nor horn growth. The plasma concentrations of testosterone and thyroxine appear to be closely related in the ibex, but the seasonal pattern of horn growth does not seem to be modulated by seasonal changes in thyroxine. Keywords Horn · Rutting season · Iberian ibex · Thyroid hormones · Wild bovidUAX Archive20242024-01-0120242024-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.12080/44784reponame:Repositorio Institucional de la Universidad Alfonso X el Sabioinstname:Universidad Alfonso X el SabioEspañolspaopen accesshttp://purl.org/coar/access_right/c_abf2CC-BYhttp://creativecommons.org/licenses/by/4.0/deed.esinfo:eu-repo/semantics/openAccessoai:archive.uax.com:20.500.12080/447842026-05-28T12:40:21Z
dc.title.none.fl_str_mv Thyroxine administration at the end of the rutting season does not affect testosterone secretion or horn growth in the Iberian ibex (Capra pyrenaica)
title Thyroxine administration at the end of the rutting season does not affect testosterone secretion or horn growth in the Iberian ibex (Capra pyrenaica)
spellingShingle Thyroxine administration at the end of the rutting season does not affect testosterone secretion or horn growth in the Iberian ibex (Capra pyrenaica)
Rodríguez Luis, Adriana 
Horn · Rutting season · Iberian ibex · Thyroid hormones · Wild bovid
title_short Thyroxine administration at the end of the rutting season does not affect testosterone secretion or horn growth in the Iberian ibex (Capra pyrenaica)
title_full Thyroxine administration at the end of the rutting season does not affect testosterone secretion or horn growth in the Iberian ibex (Capra pyrenaica)
title_fullStr Thyroxine administration at the end of the rutting season does not affect testosterone secretion or horn growth in the Iberian ibex (Capra pyrenaica)
title_full_unstemmed Thyroxine administration at the end of the rutting season does not affect testosterone secretion or horn growth in the Iberian ibex (Capra pyrenaica)
title_sort Thyroxine administration at the end of the rutting season does not affect testosterone secretion or horn growth in the Iberian ibex (Capra pyrenaica)
dc.creator.none.fl_str_mv Rodríguez Luis, Adriana 
Toledano Díaz, Adolfo
Velázquez, Rosario 
López Sebastián, Antonio
Mogedas Moreno, María
Santiago Moreno, Julián 
author Rodríguez Luis, Adriana 
author_facet Rodríguez Luis, Adriana 
Toledano Díaz, Adolfo
Velázquez, Rosario 
López Sebastián, Antonio
Mogedas Moreno, María
Santiago Moreno, Julián 
author_role author
author2 Toledano Díaz, Adolfo
Velázquez, Rosario 
López Sebastián, Antonio
Mogedas Moreno, María
Santiago Moreno, Julián 
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv UAX Archive
dc.subject.none.fl_str_mv Horn · Rutting season · Iberian ibex · Thyroid hormones · Wild bovid
topic Horn · Rutting season · Iberian ibex · Thyroid hormones · Wild bovid
description Thyroid hormones play a role in the control of seasonal reproduction in wild and domestic ruminants such as red deer and sheep. Horn growth shows an inverse relationship with reproductive activity, but the effect of thyroid function on the regulation of the seasonal pattern of horn growth is unknown. This work examines the seasonal pattern of plasma thyroxine concentration, and its effect on testosterone secretion and seasonal changes in horn growth, in male Iberian ibexes (Capra pyrenaica). Plasma testosterone, plasma thyroxine, and horn growth were measured over a year in four males kept under natural photoperiod conditions. In another four, thyroxine was administered coinciding with the period of physiological reduc tion in plasma testosterone (January¿February). In the first four, seasonal changes in the plasma concentration of thyroxine were detected with the highest concentrations recorded in October, November, and December, coinciding with the greatest testosterone secretion. In the second four, thyroxine treatment affected neither plasma testosterone concentration nor horn growth. The plasma concentrations of testosterone and thyroxine appear to be closely related in the ibex, but the seasonal pattern of horn growth does not seem to be modulated by seasonal changes in thyroxine. Keywords Horn · Rutting season · Iberian ibex · Thyroid hormones · Wild bovid
publishDate 2024
dc.date.none.fl_str_mv 2024
2024-01-01
2024
2024-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.12080/44784
url https://hdl.handle.net/20.500.12080/44784
dc.language.none.fl_str_mv Español
spa
language_invalid_str_mv Español
language spa
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
CC-BY
http://creativecommons.org/licenses/by/4.0/deed.es
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
CC-BY
http://creativecommons.org/licenses/by/4.0/deed.es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositorio Institucional de la Universidad Alfonso X el Sabio
instname:Universidad Alfonso X el Sabio
instname_str Universidad Alfonso X el Sabio
reponame_str Repositorio Institucional de la Universidad Alfonso X el Sabio
collection Repositorio Institucional de la Universidad Alfonso X el Sabio
repository.name.fl_str_mv
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