Identifying drivers of historical genetic decline in an endemic Patagonian rodent, the colonial tuco-tuco, Ctenomys sociabilis (Rodentia: Ctenomyidae)

Autores
Tammone, Mauro Nicolás; Pardiñas, Ulises Francisco J.; Lacey, Eileen Anne
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Understanding the causes of pronounced losses of genetic diversity in natural populations may provide important insights into the evolutionary significance of these events. However, such analyses are typically based on post-reduction levels and patterns of variability in modern populations, which often lead to results that are biased towards more recent demographic events. In this context, population data recovered from the fossil record provide a powerful resource for studying historical processes of genetic decline. Using radiocarbon dating, stratigraphic analyses and DNA sequencing, we compared genetic variation and relative abundances of fossil specimens from the mid-Holocene to today to evaluate potential explanations for the marked historical loss of genetic diversity in the colonial tuco-tuco (Ctenomys sociabilis), a subterranean rodent that is endemic to Patagonia. We conclude that a general pattern of climatic change during the mid-Holocene, particularly changes in precipitation, led to changes in abundance of suitable habitats for this species. Loss of suitable habitat combined with the unusual demographic structure of this species may have facilitated the decline of populations of C. sociabilis by decreasing gene flow and increasing the potential for fixation of haplotypes due to genetic drift. Our analyses of temporal changes in abundance and genetic diversity in ctenomyids have implications for understanding more widespread patterns of Holocene change in the mammalian fauna of Patagonia.
Fil: Tammone, Mauro Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Diversidad y Evolución Austral; Argentina
Fil: Pardiñas, Ulises Francisco J.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Diversidad y Evolución Austral; Argentina
Fil: Lacey, Eileen Anne. University of California at Berkeley; Estados Unidos
Materia
COMPETITION
DEMOGRAPHIC HISTORY
ENVIRONMENTAL CHANGE
NATURAL CATASTROPHES
POPULATION DECREASE
TUCO-TUCOS
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:11336/88774
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Identifying drivers of historical genetic decline in an endemic Patagonian rodent, the colonial tuco-tuco, Ctenomys sociabilis (Rodentia: Ctenomyidae)Tammone, Mauro NicolásPardiñas, Ulises Francisco J.Lacey, Eileen AnneCOMPETITIONDEMOGRAPHIC HISTORYENVIRONMENTAL CHANGENATURAL CATASTROPHESPOPULATION DECREASETUCO-TUCOShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Understanding the causes of pronounced losses of genetic diversity in natural populations may provide important insights into the evolutionary significance of these events. However, such analyses are typically based on post-reduction levels and patterns of variability in modern populations, which often lead to results that are biased towards more recent demographic events. In this context, population data recovered from the fossil record provide a powerful resource for studying historical processes of genetic decline. Using radiocarbon dating, stratigraphic analyses and DNA sequencing, we compared genetic variation and relative abundances of fossil specimens from the mid-Holocene to today to evaluate potential explanations for the marked historical loss of genetic diversity in the colonial tuco-tuco (Ctenomys sociabilis), a subterranean rodent that is endemic to Patagonia. We conclude that a general pattern of climatic change during the mid-Holocene, particularly changes in precipitation, led to changes in abundance of suitable habitats for this species. Loss of suitable habitat combined with the unusual demographic structure of this species may have facilitated the decline of populations of C. sociabilis by decreasing gene flow and increasing the potential for fixation of haplotypes due to genetic drift. Our analyses of temporal changes in abundance and genetic diversity in ctenomyids have implications for understanding more widespread patterns of Holocene change in the mammalian fauna of Patagonia.Fil: Tammone, Mauro Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Diversidad y Evolución Austral; ArgentinaFil: Pardiñas, Ulises Francisco J.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Diversidad y Evolución Austral; ArgentinaFil: Lacey, Eileen Anne. University of California at Berkeley; Estados UnidosOxford University Press2018-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/88774Tammone, Mauro Nicolás; Pardiñas, Ulises Francisco J.; Lacey, Eileen Anne; Identifying drivers of historical genetic decline in an endemic Patagonian rodent, the colonial tuco-tuco, Ctenomys sociabilis (Rodentia: Ctenomyidae); Oxford University Press; Biological Journal of The Linnean Society; 125; 3; 10-2018; 625-6390024-40661095-8312CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/biolinnean/article-abstract/125/3/625/5102500info:eu-repo/semantics/altIdentifier/doi/10.1093/biolinnean/bly134info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:46:37Zoai:ri.conicet.gov.ar:11336/88774instacron: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 09:46:37.835CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Identifying drivers of historical genetic decline in an endemic Patagonian rodent, the colonial tuco-tuco, Ctenomys sociabilis (Rodentia: Ctenomyidae)
title Identifying drivers of historical genetic decline in an endemic Patagonian rodent, the colonial tuco-tuco, Ctenomys sociabilis (Rodentia: Ctenomyidae)
spellingShingle Identifying drivers of historical genetic decline in an endemic Patagonian rodent, the colonial tuco-tuco, Ctenomys sociabilis (Rodentia: Ctenomyidae)
Tammone, Mauro Nicolás
COMPETITION
DEMOGRAPHIC HISTORY
ENVIRONMENTAL CHANGE
NATURAL CATASTROPHES
POPULATION DECREASE
TUCO-TUCOS
title_short Identifying drivers of historical genetic decline in an endemic Patagonian rodent, the colonial tuco-tuco, Ctenomys sociabilis (Rodentia: Ctenomyidae)
title_full Identifying drivers of historical genetic decline in an endemic Patagonian rodent, the colonial tuco-tuco, Ctenomys sociabilis (Rodentia: Ctenomyidae)
title_fullStr Identifying drivers of historical genetic decline in an endemic Patagonian rodent, the colonial tuco-tuco, Ctenomys sociabilis (Rodentia: Ctenomyidae)
title_full_unstemmed Identifying drivers of historical genetic decline in an endemic Patagonian rodent, the colonial tuco-tuco, Ctenomys sociabilis (Rodentia: Ctenomyidae)
title_sort Identifying drivers of historical genetic decline in an endemic Patagonian rodent, the colonial tuco-tuco, Ctenomys sociabilis (Rodentia: Ctenomyidae)
dc.creator.none.fl_str_mv Tammone, Mauro Nicolás
Pardiñas, Ulises Francisco J.
Lacey, Eileen Anne
author Tammone, Mauro Nicolás
author_facet Tammone, Mauro Nicolás
Pardiñas, Ulises Francisco J.
Lacey, Eileen Anne
author_role author
author2 Pardiñas, Ulises Francisco J.
Lacey, Eileen Anne
author2_role author
author
dc.subject.none.fl_str_mv COMPETITION
DEMOGRAPHIC HISTORY
ENVIRONMENTAL CHANGE
NATURAL CATASTROPHES
POPULATION DECREASE
TUCO-TUCOS
topic COMPETITION
DEMOGRAPHIC HISTORY
ENVIRONMENTAL CHANGE
NATURAL CATASTROPHES
POPULATION DECREASE
TUCO-TUCOS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Understanding the causes of pronounced losses of genetic diversity in natural populations may provide important insights into the evolutionary significance of these events. However, such analyses are typically based on post-reduction levels and patterns of variability in modern populations, which often lead to results that are biased towards more recent demographic events. In this context, population data recovered from the fossil record provide a powerful resource for studying historical processes of genetic decline. Using radiocarbon dating, stratigraphic analyses and DNA sequencing, we compared genetic variation and relative abundances of fossil specimens from the mid-Holocene to today to evaluate potential explanations for the marked historical loss of genetic diversity in the colonial tuco-tuco (Ctenomys sociabilis), a subterranean rodent that is endemic to Patagonia. We conclude that a general pattern of climatic change during the mid-Holocene, particularly changes in precipitation, led to changes in abundance of suitable habitats for this species. Loss of suitable habitat combined with the unusual demographic structure of this species may have facilitated the decline of populations of C. sociabilis by decreasing gene flow and increasing the potential for fixation of haplotypes due to genetic drift. Our analyses of temporal changes in abundance and genetic diversity in ctenomyids have implications for understanding more widespread patterns of Holocene change in the mammalian fauna of Patagonia.
Fil: Tammone, Mauro Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Diversidad y Evolución Austral; Argentina
Fil: Pardiñas, Ulises Francisco J.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Diversidad y Evolución Austral; Argentina
Fil: Lacey, Eileen Anne. University of California at Berkeley; Estados Unidos
description Understanding the causes of pronounced losses of genetic diversity in natural populations may provide important insights into the evolutionary significance of these events. However, such analyses are typically based on post-reduction levels and patterns of variability in modern populations, which often lead to results that are biased towards more recent demographic events. In this context, population data recovered from the fossil record provide a powerful resource for studying historical processes of genetic decline. Using radiocarbon dating, stratigraphic analyses and DNA sequencing, we compared genetic variation and relative abundances of fossil specimens from the mid-Holocene to today to evaluate potential explanations for the marked historical loss of genetic diversity in the colonial tuco-tuco (Ctenomys sociabilis), a subterranean rodent that is endemic to Patagonia. We conclude that a general pattern of climatic change during the mid-Holocene, particularly changes in precipitation, led to changes in abundance of suitable habitats for this species. Loss of suitable habitat combined with the unusual demographic structure of this species may have facilitated the decline of populations of C. sociabilis by decreasing gene flow and increasing the potential for fixation of haplotypes due to genetic drift. Our analyses of temporal changes in abundance and genetic diversity in ctenomyids have implications for understanding more widespread patterns of Holocene change in the mammalian fauna of Patagonia.
publishDate 2018
dc.date.none.fl_str_mv 2018-10
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/11336/88774
Tammone, Mauro Nicolás; Pardiñas, Ulises Francisco J.; Lacey, Eileen Anne; Identifying drivers of historical genetic decline in an endemic Patagonian rodent, the colonial tuco-tuco, Ctenomys sociabilis (Rodentia: Ctenomyidae); Oxford University Press; Biological Journal of The Linnean Society; 125; 3; 10-2018; 625-639
0024-4066
1095-8312
CONICET Digital
CONICET
url http://hdl.handle.net/11336/88774
identifier_str_mv Tammone, Mauro Nicolás; Pardiñas, Ulises Francisco J.; Lacey, Eileen Anne; Identifying drivers of historical genetic decline in an endemic Patagonian rodent, the colonial tuco-tuco, Ctenomys sociabilis (Rodentia: Ctenomyidae); Oxford University Press; Biological Journal of The Linnean Society; 125; 3; 10-2018; 625-639
0024-4066
1095-8312
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/biolinnean/article-abstract/125/3/625/5102500
info:eu-repo/semantics/altIdentifier/doi/10.1093/biolinnean/bly134
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 Oxford University Press
publisher.none.fl_str_mv Oxford 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
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score 13.13397

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