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dc.contributor.author
Tammone, Mauro Nicolás  
dc.contributor.author
Pardiñas, Ulises Francisco J.  
dc.contributor.author
Lacey, Eileen Anne  
dc.date.available
2019-11-13T20:08:07Z  
dc.date.issued
2018-10  
dc.identifier.citation
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  
dc.identifier.issn
0024-4066  
dc.identifier.uri
http://hdl.handle.net/11336/88774  
dc.description.abstract
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.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Oxford University Press  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
COMPETITION  
dc.subject
DEMOGRAPHIC HISTORY  
dc.subject
ENVIRONMENTAL CHANGE  
dc.subject
NATURAL CATASTROPHES  
dc.subject
POPULATION DECREASE  
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TUCO-TUCOS  
dc.subject.classification
Conservación de la Biodiversidad  
dc.subject.classification
Ciencias Biológicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Identifying drivers of historical genetic decline in an endemic Patagonian rodent, the colonial tuco-tuco, Ctenomys sociabilis (Rodentia: Ctenomyidae)  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2019-10-23T21:15:12Z  
dc.identifier.eissn
1095-8312  
dc.journal.volume
125  
dc.journal.number
3  
dc.journal.pagination
625-639  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Oxford  
dc.description.fil
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  
dc.description.fil
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  
dc.description.fil
Fil: Lacey, Eileen Anne. University of California at Berkeley; Estados Unidos  
dc.journal.title
Biological Journal of The Linnean Society  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/biolinnean/article-abstract/125/3/625/5102500  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/biolinnean/bly134