Dynamics of ovarian follicles in Tupinambis merianae lizards

Autores
Garcia Valdez, Maria Valeria; Chamut, Silvia Nora; Valdez Jaen, Gonzalo; Arce, Osvaldo Ernesto Antonio; Manes, Mario Enrique
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Follicular dynamics of Tupinambis merianae lizards was analyzed by means of ultrasound examination and radio frequency identification, during three consecutive reproductive periods, both in reproduction and in sexual isolation. Series of follicular development which ended in ovulation, and series of follicular development without ovulation, followed by a regression process, were observed, as well as a combination of both. Ovulation was found to be strongly dependent on mating consummation. In 34% of the cases in which follicular development ended with ovulation, and hence oviposition, follicles showed a steady and uniform growth up to the periovulatory period, also acquiring a mild echogenicity. In the absence of ovulation (66% of cases), follicular development showed two patterns: a short and a long-term anovulatory follicular cycle. In the first pattern, follicles showed limited growth and a non-echoic aspect, which suggests a previtellogenic condition. In the second pattern, follicles exhibited a growth and echogenicity similar to periovulatory ones, presumably attaining a vitellogenic stage. In addition, follicular development in reproducing females was superior to that of sexually isolated females. Follicular development, ovulation, and follicular regression appeared to constitute generalized events affecting most, if not all, of the recruited follicles.
Fil: Garcia Valdez, Maria Valeria. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; Argentina
Fil: Chamut, Silvia Nora. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; Argentina
Fil: Valdez Jaen, Gonzalo. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; Argentina
Fil: Arce, Osvaldo Ernesto Antonio. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; Argentina
Fil: Manes, Mario Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
Materia
Tupinambis,
follicular dynamics
sexual interaction
induced ovulation
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:11336/77543
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/77543
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Dynamics of ovarian follicles in Tupinambis merianae lizardsGarcia Valdez, Maria ValeriaChamut, Silvia NoraValdez Jaen, GonzaloArce, Osvaldo Ernesto AntonioManes, Mario EnriqueTupinambis,follicular dynamicssexual interactioninduced ovulationhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Follicular dynamics of Tupinambis merianae lizards was analyzed by means of ultrasound examination and radio frequency identification, during three consecutive reproductive periods, both in reproduction and in sexual isolation. Series of follicular development which ended in ovulation, and series of follicular development without ovulation, followed by a regression process, were observed, as well as a combination of both. Ovulation was found to be strongly dependent on mating consummation. In 34% of the cases in which follicular development ended with ovulation, and hence oviposition, follicles showed a steady and uniform growth up to the periovulatory period, also acquiring a mild echogenicity. In the absence of ovulation (66% of cases), follicular development showed two patterns: a short and a long-term anovulatory follicular cycle. In the first pattern, follicles showed limited growth and a non-echoic aspect, which suggests a previtellogenic condition. In the second pattern, follicles exhibited a growth and echogenicity similar to periovulatory ones, presumably attaining a vitellogenic stage. In addition, follicular development in reproducing females was superior to that of sexually isolated females. Follicular development, ovulation, and follicular regression appeared to constitute generalized events affecting most, if not all, of the recruited follicles.Fil: Garcia Valdez, Maria Valeria. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; ArgentinaFil: Chamut, Silvia Nora. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; ArgentinaFil: Valdez Jaen, Gonzalo. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; ArgentinaFil: Arce, Osvaldo Ernesto Antonio. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; ArgentinaFil: Manes, Mario Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; ArgentinaFirenze University Press2011-12info: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/11336/77543Garcia Valdez, Maria Valeria; Chamut, Silvia Nora; Valdez Jaen, Gonzalo; Arce, Osvaldo Ernesto Antonio; Manes, Mario Enrique; Dynamics of ovarian follicles in Tupinambis merianae lizards; Firenze University Press; Acta Herpetologica; 6; 2; 12-2011; 303-3131827-96351827-9643CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.fupress.net/index.php/ah/article/view/9341/11984http://dx.doi.org/10.13128/Acta_Herpetol-9341info:eu-repo/semantics/altIdentifier/url/https://dx.doi.org/10.13128/Acta_Herpetol-9341info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:00:53Zoai:ri.conicet.gov.ar:11336/77543instacron: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 10:00:53.897CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Dynamics of ovarian follicles in Tupinambis merianae lizards
title Dynamics of ovarian follicles in Tupinambis merianae lizards
spellingShingle Dynamics of ovarian follicles in Tupinambis merianae lizards
Garcia Valdez, Maria Valeria
Tupinambis,
follicular dynamics
sexual interaction
induced ovulation
title_short Dynamics of ovarian follicles in Tupinambis merianae lizards
title_full Dynamics of ovarian follicles in Tupinambis merianae lizards
title_fullStr Dynamics of ovarian follicles in Tupinambis merianae lizards
title_full_unstemmed Dynamics of ovarian follicles in Tupinambis merianae lizards
title_sort Dynamics of ovarian follicles in Tupinambis merianae lizards
dc.creator.none.fl_str_mv Garcia Valdez, Maria Valeria
Chamut, Silvia Nora
Valdez Jaen, Gonzalo
Arce, Osvaldo Ernesto Antonio
Manes, Mario Enrique
author Garcia Valdez, Maria Valeria
author_facet Garcia Valdez, Maria Valeria
Chamut, Silvia Nora
Valdez Jaen, Gonzalo
Arce, Osvaldo Ernesto Antonio
Manes, Mario Enrique
author_role author
author2 Chamut, Silvia Nora
Valdez Jaen, Gonzalo
Arce, Osvaldo Ernesto Antonio
Manes, Mario Enrique
author2_role author
author
author
author
dc.subject.none.fl_str_mv Tupinambis,
follicular dynamics
sexual interaction
induced ovulation
topic Tupinambis,
follicular dynamics
sexual interaction
induced ovulation
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Follicular dynamics of Tupinambis merianae lizards was analyzed by means of ultrasound examination and radio frequency identification, during three consecutive reproductive periods, both in reproduction and in sexual isolation. Series of follicular development which ended in ovulation, and series of follicular development without ovulation, followed by a regression process, were observed, as well as a combination of both. Ovulation was found to be strongly dependent on mating consummation. In 34% of the cases in which follicular development ended with ovulation, and hence oviposition, follicles showed a steady and uniform growth up to the periovulatory period, also acquiring a mild echogenicity. In the absence of ovulation (66% of cases), follicular development showed two patterns: a short and a long-term anovulatory follicular cycle. In the first pattern, follicles showed limited growth and a non-echoic aspect, which suggests a previtellogenic condition. In the second pattern, follicles exhibited a growth and echogenicity similar to periovulatory ones, presumably attaining a vitellogenic stage. In addition, follicular development in reproducing females was superior to that of sexually isolated females. Follicular development, ovulation, and follicular regression appeared to constitute generalized events affecting most, if not all, of the recruited follicles.
Fil: Garcia Valdez, Maria Valeria. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; Argentina
Fil: Chamut, Silvia Nora. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; Argentina
Fil: Valdez Jaen, Gonzalo. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; Argentina
Fil: Arce, Osvaldo Ernesto Antonio. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; Argentina
Fil: Manes, Mario Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
description Follicular dynamics of Tupinambis merianae lizards was analyzed by means of ultrasound examination and radio frequency identification, during three consecutive reproductive periods, both in reproduction and in sexual isolation. Series of follicular development which ended in ovulation, and series of follicular development without ovulation, followed by a regression process, were observed, as well as a combination of both. Ovulation was found to be strongly dependent on mating consummation. In 34% of the cases in which follicular development ended with ovulation, and hence oviposition, follicles showed a steady and uniform growth up to the periovulatory period, also acquiring a mild echogenicity. In the absence of ovulation (66% of cases), follicular development showed two patterns: a short and a long-term anovulatory follicular cycle. In the first pattern, follicles showed limited growth and a non-echoic aspect, which suggests a previtellogenic condition. In the second pattern, follicles exhibited a growth and echogenicity similar to periovulatory ones, presumably attaining a vitellogenic stage. In addition, follicular development in reproducing females was superior to that of sexually isolated females. Follicular development, ovulation, and follicular regression appeared to constitute generalized events affecting most, if not all, of the recruited follicles.
publishDate 2011
dc.date.none.fl_str_mv 2011-12
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/11336/77543
Garcia Valdez, Maria Valeria; Chamut, Silvia Nora; Valdez Jaen, Gonzalo; Arce, Osvaldo Ernesto Antonio; Manes, Mario Enrique; Dynamics of ovarian follicles in Tupinambis merianae lizards; Firenze University Press; Acta Herpetologica; 6; 2; 12-2011; 303-313
1827-9635
1827-9643
CONICET Digital
CONICET
url http://hdl.handle.net/11336/77543
identifier_str_mv Garcia Valdez, Maria Valeria; Chamut, Silvia Nora; Valdez Jaen, Gonzalo; Arce, Osvaldo Ernesto Antonio; Manes, Mario Enrique; Dynamics of ovarian follicles in Tupinambis merianae lizards; Firenze University Press; Acta Herpetologica; 6; 2; 12-2011; 303-313
1827-9635
1827-9643
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.fupress.net/index.php/ah/article/view/9341/11984http://dx.doi.org/10.13128/Acta_Herpetol-9341
info:eu-repo/semantics/altIdentifier/url/https://dx.doi.org/10.13128/Acta_Herpetol-9341
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 Firenze University Press
publisher.none.fl_str_mv Firenze University Press
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_ 1844613795597516800
score 13.070432

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