Armored invaders in Argentinean Patagonia: recent southward dispersion of armadillos (Cingulata, Dasypodidae)

Patagonia, south of 40° S, is currently inhabited by Chaetophractus villosus and Zaedyus pichiy. In order to reconstruct the Late Pleistocene-Holocene history of these armadillos in southern South America, we compiled and discussed data from zooarcheological sites, notes from naturalists and travell...

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Autores principales: Abba, Agustín Manuel, Poljak, Sebastián, Gabrielli, Magalí, Teta, Pablo Vicente, Pardiñas, Ulyses Francisco José
Formato: Articulo
Lenguaje:Inglés
Publicado: 2014
Materias:
Ciencias Naturales
Chaetophractus
Holocene
Human impact
Pleistocene
Impacto del hombre
Pleistoceno
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/98385
https://ri.conicet.gov.ar/11336/18633
http://www.sarem.org.ar/wp-content/uploads/2014/12/SAREM_MastNeotrop_21-2_10_Abba.pdf
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-98385
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Chaetophractus
Holocene
Human impact
Pleistocene
Impacto del hombre
Pleistoceno
spellingShingle Ciencias Naturales
Chaetophractus
Holocene
Human impact
Pleistocene
Impacto del hombre
Pleistoceno
Abba, Agustín Manuel
Poljak, Sebastián
Gabrielli, Magalí
Teta, Pablo Vicente
Pardiñas, Ulyses Francisco José
Armored invaders in Argentinean Patagonia: recent southward dispersion of armadillos (Cingulata, Dasypodidae)
topic_facet Ciencias Naturales
Chaetophractus
Holocene
Human impact
Pleistocene
Impacto del hombre
Pleistoceno
description Patagonia, south of 40° S, is currently inhabited by Chaetophractus villosus and Zaedyus pichiy. In order to reconstruct the Late Pleistocene-Holocene history of these armadillos in southern South America, we compiled and discussed data from zooarcheological sites, notes from naturalists and travellers, museum speci - mens, and field data. We found that both species experienced significant range expansion southwards. Based on the obtained evidence we concluded that: (a) Southern Patagonia was mainly free of armadillos during the Late Pleistocene-Early Holocene; (b) in the last 10 ky Z. pichiy progressively invaded southern Patagonia from the north, down to the Santa Cruz River (~50° S); at the same time, C. villosus colonized the northern portion of Patagonia north of Chubut River (~44° S); (c) during the last century, Z. pichiy surpassed the Santa Cruz River barrier while C. villosus colonized all Patagonian territories to reach the Magellan Strait and finally was introduced in Tierra del Fuego. Although these armadillos have metabolic, dietary and behavioral adaptations to cold and dry habitats that possibly helped them to extend its range southwards, we propose that the observed distributional changes of the last century were triggered mainly by anthropogenic causes.
format Articulo
Articulo
author Abba, Agustín Manuel
Poljak, Sebastián
Gabrielli, Magalí
Teta, Pablo Vicente
Pardiñas, Ulyses Francisco José
author_facet Abba, Agustín Manuel
Poljak, Sebastián
Gabrielli, Magalí
Teta, Pablo Vicente
Pardiñas, Ulyses Francisco José
author_sort Abba, Agustín Manuel
title Armored invaders in Argentinean Patagonia: recent southward dispersion of armadillos (Cingulata, Dasypodidae)
title_short Armored invaders in Argentinean Patagonia: recent southward dispersion of armadillos (Cingulata, Dasypodidae)
title_full Armored invaders in Argentinean Patagonia: recent southward dispersion of armadillos (Cingulata, Dasypodidae)
title_fullStr Armored invaders in Argentinean Patagonia: recent southward dispersion of armadillos (Cingulata, Dasypodidae)
title_full_unstemmed Armored invaders in Argentinean Patagonia: recent southward dispersion of armadillos (Cingulata, Dasypodidae)
title_sort armored invaders in argentinean patagonia: recent southward dispersion of armadillos (cingulata, dasypodidae)
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/98385
https://ri.conicet.gov.ar/11336/18633
http://www.sarem.org.ar/wp-content/uploads/2014/12/SAREM_MastNeotrop_21-2_10_Abba.pdf
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