Reproductive biology of Phymaturus Spectabilis (Liolaemidae): females skip reproduction in cold and harsh environments of Patagonia, Argentina

Autores
Boretto, Jorgelina Mariela; Cabezas, Facundo; Tappari, Fabián; Méndez de la Cruz, Fausto; Sinervo, Barry; Scolaro, Jose Alejandro; Ibarguengoytía, Nora
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Herein, we describe the reproductive biology of Phymaturus spectabilis, a lizard species that inhabits rocky outcrops in cold and arid environments of the Patagonian steppe of Argentina. We studied male and female reproductive cycles, mean annual reproductive output, allometric changes during ontogeny, and sexual dimorphism, mainly with a non-invasive methodology used for the first time in Argentina. We corroborated results from this non-invasive method with data from euthanized individuals through observation, classification, and measurement of the female reproductive tract and ovaries and through examination of the histology of testicles and epididymis in males. The presence of males with spermatozoa in the epididymis from early spring and gravid females from mid spring shows that mating, ovulation, and egg development occur at the beginning of the activity season. Parturition occurs in midsummer to two offspring. Our finding that half of the adult females were in a non-reproductive condition during the entire reproductive season, simultaneously with vitellogenic or gravid females, demonstrates that not all of the adult females in this population reproduce every year. Females exhibited an annual to biennial cycle, sometimes skipping a year of reproduction, while males exhibited an annual cycle. Phymaturus spectabilis show the common pattern of low mean annual reproductive output found in the genus Phymaturus. The low frequency of reproduction and the low mean annual reproductive output are risk factors for this species. These life-history traits, together with its microendemic character (as it is restricted to an area of 70 km2 of fragmented and rocky plateaus in the poorly protected steppe of Patagonia Argentina), mean that this species is of concern.
Fil: Boretto, Jorgelina Mariela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue; Argentina
Fil: Cabezas, Facundo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue; Argentina
Fil: Tappari, Fabián. Universidad Nacional de la Patagonia; Argentina
Fil: Méndez de la Cruz, Fausto. Universidad Nacional Autónoma de México; México
Fil: Sinervo, Barry. University Of California; Estados Unidos
Fil: Scolaro, Jose Alejandro. Universidad Nacional de la Patagonia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Ibarguengoytía, Nora. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue; Argentina
Materia
Abdominal palpation
Cold and harsh steppe
Lizards
Reproduction
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:11336/12229
Acceder
id CONICETDig_cdc8e587968be44a241adbb0e88de5ac
oai_identifier_str oai:ri.conicet.gov.ar:11336/12229
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Reproductive biology of Phymaturus Spectabilis (Liolaemidae): females skip reproduction in cold and harsh environments of Patagonia, ArgentinaBoretto, Jorgelina MarielaCabezas, FacundoTappari, FabiánMéndez de la Cruz, FaustoSinervo, BarryScolaro, Jose AlejandroIbarguengoytía, NoraAbdominal palpationCold and harsh steppeLizardsReproductionhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Herein, we describe the reproductive biology of Phymaturus spectabilis, a lizard species that inhabits rocky outcrops in cold and arid environments of the Patagonian steppe of Argentina. We studied male and female reproductive cycles, mean annual reproductive output, allometric changes during ontogeny, and sexual dimorphism, mainly with a non-invasive methodology used for the first time in Argentina. We corroborated results from this non-invasive method with data from euthanized individuals through observation, classification, and measurement of the female reproductive tract and ovaries and through examination of the histology of testicles and epididymis in males. The presence of males with spermatozoa in the epididymis from early spring and gravid females from mid spring shows that mating, ovulation, and egg development occur at the beginning of the activity season. Parturition occurs in midsummer to two offspring. Our finding that half of the adult females were in a non-reproductive condition during the entire reproductive season, simultaneously with vitellogenic or gravid females, demonstrates that not all of the adult females in this population reproduce every year. Females exhibited an annual to biennial cycle, sometimes skipping a year of reproduction, while males exhibited an annual cycle. Phymaturus spectabilis show the common pattern of low mean annual reproductive output found in the genus Phymaturus. The low frequency of reproduction and the low mean annual reproductive output are risk factors for this species. These life-history traits, together with its microendemic character (as it is restricted to an area of 70 km2 of fragmented and rocky plateaus in the poorly protected steppe of Patagonia Argentina), mean that this species is of concern.Fil: Boretto, Jorgelina Mariela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue; ArgentinaFil: Cabezas, Facundo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue; ArgentinaFil: Tappari, Fabián. Universidad Nacional de la Patagonia; ArgentinaFil: Méndez de la Cruz, Fausto. Universidad Nacional Autónoma de México; MéxicoFil: Sinervo, Barry. University Of California; Estados UnidosFil: Scolaro, Jose Alejandro. Universidad Nacional de la Patagonia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Ibarguengoytía, Nora. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue; ArgentinaHerpetological Conservation and Biology2014-07-13info: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/11336/12229Boretto, Jorgelina Mariela; Cabezas, Facundo; Tappari, Fabián; Méndez de la Cruz, Fausto; Sinervo, Barry; et al.; Reproductive biology of Phymaturus Spectabilis (Liolaemidae): females skip reproduction in cold and harsh environments of Patagonia, Argentina; Herpetological Conservation and Biology; Herpetological Conservation and Biology; 9; 1; 13-7-2014; 170-1801931-7603enginfo:eu-repo/semantics/altIdentifier/url/http://www.herpconbio.org/Volume_9/Issue_1/Boretto_etal_2014a.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 Técnicas2025-09-03T09:51:03Zoai:ri.conicet.gov.ar:11336/12229instacron: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:34982025-09-03 09:51:04.008CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Reproductive biology of Phymaturus Spectabilis (Liolaemidae): females skip reproduction in cold and harsh environments of Patagonia, Argentina
title Reproductive biology of Phymaturus Spectabilis (Liolaemidae): females skip reproduction in cold and harsh environments of Patagonia, Argentina
spellingShingle Reproductive biology of Phymaturus Spectabilis (Liolaemidae): females skip reproduction in cold and harsh environments of Patagonia, Argentina
Boretto, Jorgelina Mariela
Abdominal palpation
Cold and harsh steppe
Lizards
Reproduction
title_short Reproductive biology of Phymaturus Spectabilis (Liolaemidae): females skip reproduction in cold and harsh environments of Patagonia, Argentina
title_full Reproductive biology of Phymaturus Spectabilis (Liolaemidae): females skip reproduction in cold and harsh environments of Patagonia, Argentina
title_fullStr Reproductive biology of Phymaturus Spectabilis (Liolaemidae): females skip reproduction in cold and harsh environments of Patagonia, Argentina
title_full_unstemmed Reproductive biology of Phymaturus Spectabilis (Liolaemidae): females skip reproduction in cold and harsh environments of Patagonia, Argentina
title_sort Reproductive biology of Phymaturus Spectabilis (Liolaemidae): females skip reproduction in cold and harsh environments of Patagonia, Argentina
dc.creator.none.fl_str_mv Boretto, Jorgelina Mariela
Cabezas, Facundo
Tappari, Fabián
Méndez de la Cruz, Fausto
Sinervo, Barry
Scolaro, Jose Alejandro
Ibarguengoytía, Nora
author Boretto, Jorgelina Mariela
author_facet Boretto, Jorgelina Mariela
Cabezas, Facundo
Tappari, Fabián
Méndez de la Cruz, Fausto
Sinervo, Barry
Scolaro, Jose Alejandro
Ibarguengoytía, Nora
author_role author
author2 Cabezas, Facundo
Tappari, Fabián
Méndez de la Cruz, Fausto
Sinervo, Barry
Scolaro, Jose Alejandro
Ibarguengoytía, Nora
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Abdominal palpation
Cold and harsh steppe
Lizards
Reproduction
topic Abdominal palpation
Cold and harsh steppe
Lizards
Reproduction
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Herein, we describe the reproductive biology of Phymaturus spectabilis, a lizard species that inhabits rocky outcrops in cold and arid environments of the Patagonian steppe of Argentina. We studied male and female reproductive cycles, mean annual reproductive output, allometric changes during ontogeny, and sexual dimorphism, mainly with a non-invasive methodology used for the first time in Argentina. We corroborated results from this non-invasive method with data from euthanized individuals through observation, classification, and measurement of the female reproductive tract and ovaries and through examination of the histology of testicles and epididymis in males. The presence of males with spermatozoa in the epididymis from early spring and gravid females from mid spring shows that mating, ovulation, and egg development occur at the beginning of the activity season. Parturition occurs in midsummer to two offspring. Our finding that half of the adult females were in a non-reproductive condition during the entire reproductive season, simultaneously with vitellogenic or gravid females, demonstrates that not all of the adult females in this population reproduce every year. Females exhibited an annual to biennial cycle, sometimes skipping a year of reproduction, while males exhibited an annual cycle. Phymaturus spectabilis show the common pattern of low mean annual reproductive output found in the genus Phymaturus. The low frequency of reproduction and the low mean annual reproductive output are risk factors for this species. These life-history traits, together with its microendemic character (as it is restricted to an area of 70 km2 of fragmented and rocky plateaus in the poorly protected steppe of Patagonia Argentina), mean that this species is of concern.
Fil: Boretto, Jorgelina Mariela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue; Argentina
Fil: Cabezas, Facundo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue; Argentina
Fil: Tappari, Fabián. Universidad Nacional de la Patagonia; Argentina
Fil: Méndez de la Cruz, Fausto. Universidad Nacional Autónoma de México; México
Fil: Sinervo, Barry. University Of California; Estados Unidos
Fil: Scolaro, Jose Alejandro. Universidad Nacional de la Patagonia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Ibarguengoytía, Nora. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue; Argentina
description Herein, we describe the reproductive biology of Phymaturus spectabilis, a lizard species that inhabits rocky outcrops in cold and arid environments of the Patagonian steppe of Argentina. We studied male and female reproductive cycles, mean annual reproductive output, allometric changes during ontogeny, and sexual dimorphism, mainly with a non-invasive methodology used for the first time in Argentina. We corroborated results from this non-invasive method with data from euthanized individuals through observation, classification, and measurement of the female reproductive tract and ovaries and through examination of the histology of testicles and epididymis in males. The presence of males with spermatozoa in the epididymis from early spring and gravid females from mid spring shows that mating, ovulation, and egg development occur at the beginning of the activity season. Parturition occurs in midsummer to two offspring. Our finding that half of the adult females were in a non-reproductive condition during the entire reproductive season, simultaneously with vitellogenic or gravid females, demonstrates that not all of the adult females in this population reproduce every year. Females exhibited an annual to biennial cycle, sometimes skipping a year of reproduction, while males exhibited an annual cycle. Phymaturus spectabilis show the common pattern of low mean annual reproductive output found in the genus Phymaturus. The low frequency of reproduction and the low mean annual reproductive output are risk factors for this species. These life-history traits, together with its microendemic character (as it is restricted to an area of 70 km2 of fragmented and rocky plateaus in the poorly protected steppe of Patagonia Argentina), mean that this species is of concern.
publishDate 2014
dc.date.none.fl_str_mv 2014-07-13
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/11336/12229
Boretto, Jorgelina Mariela; Cabezas, Facundo; Tappari, Fabián; Méndez de la Cruz, Fausto; Sinervo, Barry; et al.; Reproductive biology of Phymaturus Spectabilis (Liolaemidae): females skip reproduction in cold and harsh environments of Patagonia, Argentina; Herpetological Conservation and Biology; Herpetological Conservation and Biology; 9; 1; 13-7-2014; 170-180
1931-7603
url http://hdl.handle.net/11336/12229
identifier_str_mv Boretto, Jorgelina Mariela; Cabezas, Facundo; Tappari, Fabián; Méndez de la Cruz, Fausto; Sinervo, Barry; et al.; Reproductive biology of Phymaturus Spectabilis (Liolaemidae): females skip reproduction in cold and harsh environments of Patagonia, Argentina; Herpetological Conservation and Biology; Herpetological Conservation and Biology; 9; 1; 13-7-2014; 170-180
1931-7603
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_9/Issue_1/Boretto_etal_2014a.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
application/pdf
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 13.13397

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