A new species of arboreal rat, genus Oecomys (Rodentia, Cricetidae) from Chaco

A new species of rodent is added to the highly diverse genus Oecomys (Cricetidae, Sigmodontinae, Oryzomyini) based on specimens collected in the Argentinian provinces of Chaco and Formosa. The new species is characterized by a derived carotid circulatory pattern, a feature shared with O. concolor, O...

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Detalles Bibliográficos
Autores principales: Pardiñas, Ulyses Francisco José, Teta, Pablo Vicente, Salazar Bravo, Jorge, Myers, Phil, Galliari, Carlos Alberto
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Zoología
Argentina
Bolivia
Brasil
Oecomys mamorae
Oryzomyini
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/86217
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-86217
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Zoología
Argentina
Bolivia
Brasil
Oecomys mamorae
Oryzomyini
spellingShingle Zoología
Argentina
Bolivia
Brasil
Oecomys mamorae
Oryzomyini
Pardiñas, Ulyses Francisco José
Teta, Pablo Vicente
Salazar Bravo, Jorge
Myers, Phil
Galliari, Carlos Alberto
A new species of arboreal rat, genus Oecomys (Rodentia, Cricetidae) from Chaco
topic_facet Zoología
Argentina
Bolivia
Brasil
Oecomys mamorae
Oryzomyini
description A new species of rodent is added to the highly diverse genus Oecomys (Cricetidae, Sigmodontinae, Oryzomyini) based on specimens collected in the Argentinian provinces of Chaco and Formosa. The new species is characterized by a derived carotid circulatory pattern, a feature shared with O. concolor, O. mamorae, and O. sydandersoni. A unique combination of morphological, morphometric, and molecular characters, however, provides unambiguous evidence of its validity as a separate entity. Individuals of the new species are larger than other representatives of Oecomys, and their skulls have wide and cuneate interorbital regions with well-developed supraorbital shelves, long incisive foramina, long palates, absent alisphenoid struts, and broad Eustachian tubes. This new Oecomys appears to be endemic to the Humid Chaco, an ecoregion listed as Vulnerable due to the human impact. Preliminary observations suggest that several specimens from Eastern Paraguay and the Brazilian Pantanal could also be assigned to the new species described herein.
format Articulo
Articulo
author Pardiñas, Ulyses Francisco José
Teta, Pablo Vicente
Salazar Bravo, Jorge
Myers, Phil
Galliari, Carlos Alberto
author_facet Pardiñas, Ulyses Francisco José
Teta, Pablo Vicente
Salazar Bravo, Jorge
Myers, Phil
Galliari, Carlos Alberto
author_sort Pardiñas, Ulyses Francisco José
title A new species of arboreal rat, genus Oecomys (Rodentia, Cricetidae) from Chaco
title_short A new species of arboreal rat, genus Oecomys (Rodentia, Cricetidae) from Chaco
title_full A new species of arboreal rat, genus Oecomys (Rodentia, Cricetidae) from Chaco
title_fullStr A new species of arboreal rat, genus Oecomys (Rodentia, Cricetidae) from Chaco
title_full_unstemmed A new species of arboreal rat, genus Oecomys (Rodentia, Cricetidae) from Chaco
title_sort new species of arboreal rat, genus oecomys (rodentia, cricetidae) from chaco
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/86217
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