Testosterone cycle and regulation of reproductive events in the lizard Phymaturus punae (Liolaemidae) from the highlands of the Andes, Argentina

Autores
Boretto, Jorgelina Mariela; Fornes, Miguel Walter; Jahn, Graciela Alma; Acosta, Juan Carlos; Ibarguengoytía, Nora
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The genus Phymaturus, entirely viviparous and mostly herbivorous, inhabits the cold and 25 harsh environments of the Andean highlands of Argentina and Chile, and the Patagonian 26 steppe of Argentina. Phymaturus punae is a vulnerable lizard endemic to the Biosphere 27 Reserve San Guillermo (National Park and Provincial Reserve) in San Juan (Argentina) that 28 inhabits high altitudes of 3,100 to 4,200 m. The reproductive cycles of males and females of 29 P. punae have been described previously. Males perform a prenuptial and annual cycle, and 30 females reproduce once every two years. As a consequence, the adjustment in the timing of 31 males to the reproductive cycles of females must be very precise to ensure reproductive 32 success. We elucidate the time of mating and the asynchrony of males and females 33 reproductive events in P. punae based on endocrine and ultrastructural studies. Present 34 hormonal results support the idea that copulation in P. punae occurs at the end of the activity 35 season. Ultrastructural features observed in Sertoli and Leydig cells indicate that both types of 36 cells have the potential to synthesize steroid hormones, to support the spermatogenic cycle 37 and the mating period, respectively. In P. punae the cases of temporal asynchrony in steroid 38 activity, suggest that this mechanism must be important to start the spermatogenesis in spring, 39 supported by the steroid activity of Sertoli cells, since Leydig cells are inactive. Nevertheless 40 the asynchronic steroid mechanism seems to be more necessary in Phymaturus species with 41 continuous or postnuptial cycles, than in species with prenuptial cycles, like P. punae.
Fil: Boretto, Jorgelina Mariela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones En Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Reg.universidad Bariloche. Instituto de Investigaciones En Biodiversidad y Medioambiente; Argentina
Fil: Fornes, Miguel Walter. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo; Argentina
Fil: Jahn, Graciela Alma. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Medicina y Biología Experimental de Cuyo; Argentina
Fil: Acosta, Juan Carlos. Universidad Nacional de San Juan; Argentina
Fil: Ibarguengoytía, Nora. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones En Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Reg.universidad Bariloche. Instituto de Investigaciones En Biodiversidad y Medioambiente; Argentina
Materia
Reproducción
Hormonas
Lagartos
Phymaturus
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:11336/27665
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/27665
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Testosterone cycle and regulation of reproductive events in the lizard Phymaturus punae (Liolaemidae) from the highlands of the Andes, ArgentinaBoretto, Jorgelina MarielaFornes, Miguel WalterJahn, Graciela AlmaAcosta, Juan CarlosIbarguengoytía, NoraReproducciónHormonasLagartosPhymaturushttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The genus Phymaturus, entirely viviparous and mostly herbivorous, inhabits the cold and 25 harsh environments of the Andean highlands of Argentina and Chile, and the Patagonian 26 steppe of Argentina. Phymaturus punae is a vulnerable lizard endemic to the Biosphere 27 Reserve San Guillermo (National Park and Provincial Reserve) in San Juan (Argentina) that 28 inhabits high altitudes of 3,100 to 4,200 m. The reproductive cycles of males and females of 29 P. punae have been described previously. Males perform a prenuptial and annual cycle, and 30 females reproduce once every two years. As a consequence, the adjustment in the timing of 31 males to the reproductive cycles of females must be very precise to ensure reproductive 32 success. We elucidate the time of mating and the asynchrony of males and females 33 reproductive events in P. punae based on endocrine and ultrastructural studies. Present 34 hormonal results support the idea that copulation in P. punae occurs at the end of the activity 35 season. Ultrastructural features observed in Sertoli and Leydig cells indicate that both types of 36 cells have the potential to synthesize steroid hormones, to support the spermatogenic cycle 37 and the mating period, respectively. In P. punae the cases of temporal asynchrony in steroid 38 activity, suggest that this mechanism must be important to start the spermatogenesis in spring, 39 supported by the steroid activity of Sertoli cells, since Leydig cells are inactive. Nevertheless 40 the asynchronic steroid mechanism seems to be more necessary in Phymaturus species with 41 continuous or postnuptial cycles, than in species with prenuptial cycles, like P. punae.Fil: Boretto, Jorgelina Mariela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones En Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Reg.universidad Bariloche. Instituto de Investigaciones En Biodiversidad y Medioambiente; ArgentinaFil: Fornes, Miguel Walter. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo; ArgentinaFil: Jahn, Graciela Alma. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Medicina y Biología Experimental de Cuyo; ArgentinaFil: Acosta, Juan Carlos. Universidad Nacional de San Juan; ArgentinaFil: Ibarguengoytía, Nora. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones En Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Reg.universidad Bariloche. Instituto de Investigaciones En Biodiversidad y Medioambiente; ArgentinaSociety for the Study of Amphibians and Reptiles2014-11-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/27665Boretto, Jorgelina Mariela; Fornes, Miguel Walter; Jahn, Graciela Alma; Acosta, Juan Carlos; Ibarguengoytía, Nora; Testosterone cycle and regulation of reproductive events in the lizard Phymaturus punae (Liolaemidae) from the highlands of the Andes, Argentina; Society for the Study of Amphibians and Reptiles; Journal of Herpetology; 48; 2; 1-11-2014; 172-1800022-1511CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.bioone.org/doi/abs/10.1670/12-171info:eu-repo/semantics/altIdentifier/doi/10.1670/12-171info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:20:05Zoai:ri.conicet.gov.ar:11336/27665instacron: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:34982025-09-29 10:20:06.011CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Testosterone cycle and regulation of reproductive events in the lizard Phymaturus punae (Liolaemidae) from the highlands of the Andes, Argentina
title Testosterone cycle and regulation of reproductive events in the lizard Phymaturus punae (Liolaemidae) from the highlands of the Andes, Argentina
spellingShingle Testosterone cycle and regulation of reproductive events in the lizard Phymaturus punae (Liolaemidae) from the highlands of the Andes, Argentina
Boretto, Jorgelina Mariela
Reproducción
Hormonas
Lagartos
Phymaturus
title_short Testosterone cycle and regulation of reproductive events in the lizard Phymaturus punae (Liolaemidae) from the highlands of the Andes, Argentina
title_full Testosterone cycle and regulation of reproductive events in the lizard Phymaturus punae (Liolaemidae) from the highlands of the Andes, Argentina
title_fullStr Testosterone cycle and regulation of reproductive events in the lizard Phymaturus punae (Liolaemidae) from the highlands of the Andes, Argentina
title_full_unstemmed Testosterone cycle and regulation of reproductive events in the lizard Phymaturus punae (Liolaemidae) from the highlands of the Andes, Argentina
title_sort Testosterone cycle and regulation of reproductive events in the lizard Phymaturus punae (Liolaemidae) from the highlands of the Andes, Argentina
dc.creator.none.fl_str_mv Boretto, Jorgelina Mariela
Fornes, Miguel Walter
Jahn, Graciela Alma
Acosta, Juan Carlos
Ibarguengoytía, Nora
author Boretto, Jorgelina Mariela
author_facet Boretto, Jorgelina Mariela
Fornes, Miguel Walter
Jahn, Graciela Alma
Acosta, Juan Carlos
Ibarguengoytía, Nora
author_role author
author2 Fornes, Miguel Walter
Jahn, Graciela Alma
Acosta, Juan Carlos
Ibarguengoytía, Nora
author2_role author
author
author
author
dc.subject.none.fl_str_mv Reproducción
Hormonas
Lagartos
Phymaturus
topic Reproducción
Hormonas
Lagartos
Phymaturus
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The genus Phymaturus, entirely viviparous and mostly herbivorous, inhabits the cold and 25 harsh environments of the Andean highlands of Argentina and Chile, and the Patagonian 26 steppe of Argentina. Phymaturus punae is a vulnerable lizard endemic to the Biosphere 27 Reserve San Guillermo (National Park and Provincial Reserve) in San Juan (Argentina) that 28 inhabits high altitudes of 3,100 to 4,200 m. The reproductive cycles of males and females of 29 P. punae have been described previously. Males perform a prenuptial and annual cycle, and 30 females reproduce once every two years. As a consequence, the adjustment in the timing of 31 males to the reproductive cycles of females must be very precise to ensure reproductive 32 success. We elucidate the time of mating and the asynchrony of males and females 33 reproductive events in P. punae based on endocrine and ultrastructural studies. Present 34 hormonal results support the idea that copulation in P. punae occurs at the end of the activity 35 season. Ultrastructural features observed in Sertoli and Leydig cells indicate that both types of 36 cells have the potential to synthesize steroid hormones, to support the spermatogenic cycle 37 and the mating period, respectively. In P. punae the cases of temporal asynchrony in steroid 38 activity, suggest that this mechanism must be important to start the spermatogenesis in spring, 39 supported by the steroid activity of Sertoli cells, since Leydig cells are inactive. Nevertheless 40 the asynchronic steroid mechanism seems to be more necessary in Phymaturus species with 41 continuous or postnuptial cycles, than in species with prenuptial cycles, like P. punae.
Fil: Boretto, Jorgelina Mariela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones En Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Reg.universidad Bariloche. Instituto de Investigaciones En Biodiversidad y Medioambiente; Argentina
Fil: Fornes, Miguel Walter. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo; Argentina
Fil: Jahn, Graciela Alma. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Medicina y Biología Experimental de Cuyo; Argentina
Fil: Acosta, Juan Carlos. Universidad Nacional de San Juan; Argentina
Fil: Ibarguengoytía, Nora. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones En Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Reg.universidad Bariloche. Instituto de Investigaciones En Biodiversidad y Medioambiente; Argentina
description The genus Phymaturus, entirely viviparous and mostly herbivorous, inhabits the cold and 25 harsh environments of the Andean highlands of Argentina and Chile, and the Patagonian 26 steppe of Argentina. Phymaturus punae is a vulnerable lizard endemic to the Biosphere 27 Reserve San Guillermo (National Park and Provincial Reserve) in San Juan (Argentina) that 28 inhabits high altitudes of 3,100 to 4,200 m. The reproductive cycles of males and females of 29 P. punae have been described previously. Males perform a prenuptial and annual cycle, and 30 females reproduce once every two years. As a consequence, the adjustment in the timing of 31 males to the reproductive cycles of females must be very precise to ensure reproductive 32 success. We elucidate the time of mating and the asynchrony of males and females 33 reproductive events in P. punae based on endocrine and ultrastructural studies. Present 34 hormonal results support the idea that copulation in P. punae occurs at the end of the activity 35 season. Ultrastructural features observed in Sertoli and Leydig cells indicate that both types of 36 cells have the potential to synthesize steroid hormones, to support the spermatogenic cycle 37 and the mating period, respectively. In P. punae the cases of temporal asynchrony in steroid 38 activity, suggest that this mechanism must be important to start the spermatogenesis in spring, 39 supported by the steroid activity of Sertoli cells, since Leydig cells are inactive. Nevertheless 40 the asynchronic steroid mechanism seems to be more necessary in Phymaturus species with 41 continuous or postnuptial cycles, than in species with prenuptial cycles, like P. punae.
publishDate 2014
dc.date.none.fl_str_mv 2014-11-01
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/11336/27665
Boretto, Jorgelina Mariela; Fornes, Miguel Walter; Jahn, Graciela Alma; Acosta, Juan Carlos; Ibarguengoytía, Nora; Testosterone cycle and regulation of reproductive events in the lizard Phymaturus punae (Liolaemidae) from the highlands of the Andes, Argentina; Society for the Study of Amphibians and Reptiles; Journal of Herpetology; 48; 2; 1-11-2014; 172-180
0022-1511
CONICET Digital
CONICET
url http://hdl.handle.net/11336/27665
identifier_str_mv Boretto, Jorgelina Mariela; Fornes, Miguel Walter; Jahn, Graciela Alma; Acosta, Juan Carlos; Ibarguengoytía, Nora; Testosterone cycle and regulation of reproductive events in the lizard Phymaturus punae (Liolaemidae) from the highlands of the Andes, Argentina; Society for the Study of Amphibians and Reptiles; Journal of Herpetology; 48; 2; 1-11-2014; 172-180
0022-1511
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.bioone.org/doi/abs/10.1670/12-171
info:eu-repo/semantics/altIdentifier/doi/10.1670/12-171
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
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Society for the Study of Amphibians and Reptiles
publisher.none.fl_str_mv Society for the Study of Amphibians and Reptiles
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
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score 13.070432

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