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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Autores: Pardiñas, Ulyses Francisco José, Teta, Pablo Vicente, Salazar Bravo, Jorge, Myers, Phil, Galliari, Carlos Alberto
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:Argentina
Institución:Universidad Nacional de La Plata
Repositorio:SEDICI (UNLP)
Idioma:inglés
OAI Identifier:oai:sedici.unlp.edu.ar:10915/86217
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/86217
Access Level:acceso abierto
Palabra clave:Zoología
Argentina
Bolivia
Brasil
Oecomys mamorae
Oryzomyini
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spelling A new species of arboreal rat, genus Oecomys (Rodentia, Cricetidae) from ChacoPardiñas, Ulyses Francisco JoséTeta, Pablo VicenteSalazar Bravo, JorgeMyers, PhilGalliari, Carlos AlbertoZoologíaArgentinaBoliviaBrasilOecomys mamoraeOryzomyiniA 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.Una nueva especie es adicionada al altamente diverso género de roedores Oecomys (Cricetidae, Sigmodontinae, Oryzomyini), sobre la base de especímenes coleccionados en las provincias Argentinas de Chaco y Formosa. La nueva especie se caracteriza por un patrón de circulación carotídea derivado, un rasgo compartido con O. concolor, O. mamorae y O. sydandersoni. Sin embargo, la combinación única de caracteres morfológicos, morfométricos y moleculares provee evidencia inequívoca sobre su validez como una entidad separada. Individuos de la nueva especie son de mayor tamaño en comparación con otros Oecomys y sus cráneos tienen una región interorbitaria ancha y acuñada con plataformas supraorbitarias bien desarrolladas, forámenes incisivos largos, paladares largos, ausencia de las barras alisfenoideas y tubos de Eustaquio anchos. Este nuevo Oecomys parece ser endémico del Chaco Húmedo, una ecorregión considerada como Vulnerable debido al impacto antrópico. Observaciones preliminares sugieren que varios especímenes de Paraguay Oriental y del Pantanal Brasilero podrían también ser asignados a la nueva especie aquí descrita.Centro de Estudios Parasitológicos y de Vectores2016info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1177-1196http://sedici.unlp.edu.ar/handle/10915/86217enginfo:eu-repo/semantics/altIdentifier/issn/0022-2372info:eu-repo/semantics/altIdentifier/doi/10.1093/jmammal/gyw070info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2024-05-08T12:54:41Zoai:sedici.unlp.edu.ar:10915/86217Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292024-05-08 12:54:42.113SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv A new species of arboreal rat, genus Oecomys (Rodentia, Cricetidae) from Chaco
title A new species of arboreal rat, genus Oecomys (Rodentia, Cricetidae) from Chaco
spellingShingle A new species of arboreal rat, genus Oecomys (Rodentia, Cricetidae) from Chaco
Pardiñas, Ulyses Francisco José
Zoología
Argentina
Bolivia
Brasil
Oecomys mamorae
Oryzomyini
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 A new species of arboreal rat, genus Oecomys (Rodentia, Cricetidae) from Chaco
dc.creator.none.fl_str_mv Pardiñas, Ulyses Francisco José
Teta, Pablo Vicente
Salazar Bravo, Jorge
Myers, Phil
Galliari, Carlos Alberto
author Pardiñas, Ulyses Francisco José
author_facet Pardiñas, Ulyses Francisco José
Teta, Pablo Vicente
Salazar Bravo, Jorge
Myers, Phil
Galliari, Carlos Alberto
author_role author
author2 Teta, Pablo Vicente
Salazar Bravo, Jorge
Myers, Phil
Galliari, Carlos Alberto
author2_role author
author
author
author
dc.subject.none.fl_str_mv Zoología
Argentina
Bolivia
Brasil
Oecomys mamorae
Oryzomyini
topic 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.
publishDate 2016
dc.date.none.fl_str_mv 2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/86217
url http://sedici.unlp.edu.ar/handle/10915/86217
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0022-2372
info:eu-repo/semantics/altIdentifier/doi/10.1093/jmammal/gyw070
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
1177-1196
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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