Reproductive Biology of Phymaturus cf. palluma An Endangered Species from Highlands of the Andes, San Juan, Argentina

Autores
Cabezas, Facundo; Boretto, Jorgelina Mariela; Acosta, Juan Carlos; Jahn, Graciela Alma; Blanco, Graciela; Laspiur, Julio Alejandro; Ibarguengoytía, Nora
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Viviparous liolaemids that inhabit cool and harsh environments of Patagonia and the highlands of the Andes exhibit distinctive life-history traits to synchronize births with benign environmental conditions. We studied the reproduction of Phymaturus cf. palluma, a viviparous species that inhabits rocky outcrops in cool environments of the Andean highlands of San Juan, Argentina, and discuss our results in relation to the Conservation status of this poorly known species. We determined male and female reproductive cycles, male testosterone cycle, allometry of morphometric variables and sexual size dimorphism, minimum adult size, clutch size, and mean annual reproductive output. Females of Phymaturus cf. palluma exhibited a biennial reproductive cycle, with a litter size of one to two offspring, resulting in a low mean annual reproductive output of 0.75 offspring/female/year. The male spermatogenic cycle was asynchronous among individuals. We observed males with sperm in the epididymis and high values of serum testosterone concentrations throughout the activity season. The sexual dimorphism and allometric analyses revealed that legs are wider in males than in females throughout the life span, and not linked to sexual maturity. In contrast, the head size in males and the trunk size in females are developed after sexual maturity, suggesting that they have arisen through sexual selection. Our study confirmed a pattern of prolonged female reproductive cycles and low mean annual reproductive output in the genus Phymaturus, resulting in this species having one of the lowest values of mean annual reproductive output for lizards in the world.
Fil: Cabezas, Facundo. 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 Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Departamento de Zoología; Argentina
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 Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Departamento de Zoología; Argentina
Fil: Acosta, Juan Carlos. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales; 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: Blanco, Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; Argentina. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina
Fil: Laspiur, Julio Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; Argentina. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales; 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 Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Departamento de Zoología; Argentina
Materia
Allometry
Conservation
Cool enviroments
Phymaturus
Reproductive cycles
Sexual dimorphism
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:11336/216621
Acceder
id CONICETDig_a5d68d81053215ac211292ded8ae3019
oai_identifier_str oai:ri.conicet.gov.ar:11336/216621
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Reproductive Biology of Phymaturus cf. palluma An Endangered Species from Highlands of the Andes, San Juan, ArgentinaCabezas, FacundoBoretto, Jorgelina MarielaAcosta, Juan CarlosJahn, Graciela AlmaBlanco, GracielaLaspiur, Julio AlejandroIbarguengoytía, NoraAllometryConservationCool enviromentsPhymaturusReproductive cyclesSexual dimorphismTestosteronehttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Viviparous liolaemids that inhabit cool and harsh environments of Patagonia and the highlands of the Andes exhibit distinctive life-history traits to synchronize births with benign environmental conditions. We studied the reproduction of Phymaturus cf. palluma, a viviparous species that inhabits rocky outcrops in cool environments of the Andean highlands of San Juan, Argentina, and discuss our results in relation to the Conservation status of this poorly known species. We determined male and female reproductive cycles, male testosterone cycle, allometry of morphometric variables and sexual size dimorphism, minimum adult size, clutch size, and mean annual reproductive output. Females of Phymaturus cf. palluma exhibited a biennial reproductive cycle, with a litter size of one to two offspring, resulting in a low mean annual reproductive output of 0.75 offspring/female/year. The male spermatogenic cycle was asynchronous among individuals. We observed males with sperm in the epididymis and high values of serum testosterone concentrations throughout the activity season. The sexual dimorphism and allometric analyses revealed that legs are wider in males than in females throughout the life span, and not linked to sexual maturity. In contrast, the head size in males and the trunk size in females are developed after sexual maturity, suggesting that they have arisen through sexual selection. Our study confirmed a pattern of prolonged female reproductive cycles and low mean annual reproductive output in the genus Phymaturus, resulting in this species having one of the lowest values of mean annual reproductive output for lizards in the world.Fil: Cabezas, Facundo. 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 Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Departamento de Zoología; ArgentinaFil: 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 Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Departamento de Zoología; ArgentinaFil: Acosta, Juan Carlos. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales; 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: Blanco, Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; Argentina. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales; ArgentinaFil: Laspiur, Julio Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; Argentina. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales; 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 Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Departamento de Zoología; ArgentinaHerpetological Conservation and Biology2010-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/216621Cabezas, Facundo; Boretto, Jorgelina Mariela; Acosta, Juan Carlos; Jahn, Graciela Alma; Blanco, Graciela; et al.; Reproductive Biology of Phymaturus cf. palluma An Endangered Species from Highlands of the Andes, San Juan, Argentina; Herpetological Conservation and Biology; Herpetological Conservation and Biology; 5; 3; 12-2010; 430-4401931-7603CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.herpconbio.org/Volume_5/Issue_3/Cabezas_Cartes_etal_2010.pdfinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:46:36Zoai:ri.conicet.gov.ar:11336/216621instacron: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 09:46:36.38CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Reproductive Biology of Phymaturus cf. palluma An Endangered Species from Highlands of the Andes, San Juan, Argentina
title Reproductive Biology of Phymaturus cf. palluma An Endangered Species from Highlands of the Andes, San Juan, Argentina
spellingShingle Reproductive Biology of Phymaturus cf. palluma An Endangered Species from Highlands of the Andes, San Juan, Argentina
Cabezas, Facundo
Allometry
Conservation
Cool enviroments
Phymaturus
Reproductive cycles
Sexual dimorphism
Testosterone
title_short Reproductive Biology of Phymaturus cf. palluma An Endangered Species from Highlands of the Andes, San Juan, Argentina
title_full Reproductive Biology of Phymaturus cf. palluma An Endangered Species from Highlands of the Andes, San Juan, Argentina
title_fullStr Reproductive Biology of Phymaturus cf. palluma An Endangered Species from Highlands of the Andes, San Juan, Argentina
title_full_unstemmed Reproductive Biology of Phymaturus cf. palluma An Endangered Species from Highlands of the Andes, San Juan, Argentina
title_sort Reproductive Biology of Phymaturus cf. palluma An Endangered Species from Highlands of the Andes, San Juan, Argentina
dc.creator.none.fl_str_mv Cabezas, Facundo
Boretto, Jorgelina Mariela
Acosta, Juan Carlos
Jahn, Graciela Alma
Blanco, Graciela
Laspiur, Julio Alejandro
Ibarguengoytía, Nora
author Cabezas, Facundo
author_facet Cabezas, Facundo
Boretto, Jorgelina Mariela
Acosta, Juan Carlos
Jahn, Graciela Alma
Blanco, Graciela
Laspiur, Julio Alejandro
Ibarguengoytía, Nora
author_role author
author2 Boretto, Jorgelina Mariela
Acosta, Juan Carlos
Jahn, Graciela Alma
Blanco, Graciela
Laspiur, Julio Alejandro
Ibarguengoytía, Nora
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Allometry
Conservation
Cool enviroments
Phymaturus
Reproductive cycles
Sexual dimorphism
Testosterone
topic Allometry
Conservation
Cool enviroments
Phymaturus
Reproductive cycles
Sexual dimorphism
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 Viviparous liolaemids that inhabit cool and harsh environments of Patagonia and the highlands of the Andes exhibit distinctive life-history traits to synchronize births with benign environmental conditions. We studied the reproduction of Phymaturus cf. palluma, a viviparous species that inhabits rocky outcrops in cool environments of the Andean highlands of San Juan, Argentina, and discuss our results in relation to the Conservation status of this poorly known species. We determined male and female reproductive cycles, male testosterone cycle, allometry of morphometric variables and sexual size dimorphism, minimum adult size, clutch size, and mean annual reproductive output. Females of Phymaturus cf. palluma exhibited a biennial reproductive cycle, with a litter size of one to two offspring, resulting in a low mean annual reproductive output of 0.75 offspring/female/year. The male spermatogenic cycle was asynchronous among individuals. We observed males with sperm in the epididymis and high values of serum testosterone concentrations throughout the activity season. The sexual dimorphism and allometric analyses revealed that legs are wider in males than in females throughout the life span, and not linked to sexual maturity. In contrast, the head size in males and the trunk size in females are developed after sexual maturity, suggesting that they have arisen through sexual selection. Our study confirmed a pattern of prolonged female reproductive cycles and low mean annual reproductive output in the genus Phymaturus, resulting in this species having one of the lowest values of mean annual reproductive output for lizards in the world.
Fil: Cabezas, Facundo. 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 Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Departamento de Zoología; Argentina
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 Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Departamento de Zoología; Argentina
Fil: Acosta, Juan Carlos. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales; 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: Blanco, Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; Argentina. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina
Fil: Laspiur, Julio Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; Argentina. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales; 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 Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Departamento de Zoología; Argentina
description Viviparous liolaemids that inhabit cool and harsh environments of Patagonia and the highlands of the Andes exhibit distinctive life-history traits to synchronize births with benign environmental conditions. We studied the reproduction of Phymaturus cf. palluma, a viviparous species that inhabits rocky outcrops in cool environments of the Andean highlands of San Juan, Argentina, and discuss our results in relation to the Conservation status of this poorly known species. We determined male and female reproductive cycles, male testosterone cycle, allometry of morphometric variables and sexual size dimorphism, minimum adult size, clutch size, and mean annual reproductive output. Females of Phymaturus cf. palluma exhibited a biennial reproductive cycle, with a litter size of one to two offspring, resulting in a low mean annual reproductive output of 0.75 offspring/female/year. The male spermatogenic cycle was asynchronous among individuals. We observed males with sperm in the epididymis and high values of serum testosterone concentrations throughout the activity season. The sexual dimorphism and allometric analyses revealed that legs are wider in males than in females throughout the life span, and not linked to sexual maturity. In contrast, the head size in males and the trunk size in females are developed after sexual maturity, suggesting that they have arisen through sexual selection. Our study confirmed a pattern of prolonged female reproductive cycles and low mean annual reproductive output in the genus Phymaturus, resulting in this species having one of the lowest values of mean annual reproductive output for lizards in the world.
publishDate 2010
dc.date.none.fl_str_mv 2010-12
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/11336/216621
Cabezas, Facundo; Boretto, Jorgelina Mariela; Acosta, Juan Carlos; Jahn, Graciela Alma; Blanco, Graciela; et al.; Reproductive Biology of Phymaturus cf. palluma An Endangered Species from Highlands of the Andes, San Juan, Argentina; Herpetological Conservation and Biology; Herpetological Conservation and Biology; 5; 3; 12-2010; 430-440
1931-7603
CONICET Digital
CONICET
url http://hdl.handle.net/11336/216621
identifier_str_mv Cabezas, Facundo; Boretto, Jorgelina Mariela; Acosta, Juan Carlos; Jahn, Graciela Alma; Blanco, Graciela; et al.; Reproductive Biology of Phymaturus cf. palluma An Endangered Species from Highlands of the Andes, San Juan, Argentina; Herpetological Conservation and Biology; Herpetological Conservation and Biology; 5; 3; 12-2010; 430-440
1931-7603
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.herpconbio.org/Volume_5/Issue_3/Cabezas_Cartes_etal_2010.pdf
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 Herpetological Conservation and Biology
publisher.none.fl_str_mv Herpetological Conservation and Biology
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 13.069144

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