A new species of the tetraploid vizcacha rat Tympanoctomys (Caviomorpha, Octodontidae) from Central Patagonia, Argentina

Autores
Teta, Pablo Vicente; Pardiñas, Ulises Francisco J.; Udrizar Sauthier, Daniel Edgardo; Gallardo, Milton H.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A new living species of the desert-adapted tetraploid rodent Tympanoctomys (Caviomorpha, Octodontidae) is described. The new form is restricted to the type locality in Chubut Province, central Patagonia, Argentina, although is known from at least 4 additional Holocene-aged localities along the middle and lower valley of the Chubut River. Tympanoctomys sp. nov. is smaller than the living T. barrerae, its general coloration is yellowish (reddish in T. barrerae ) and its tail is equal to ~ 43–50% of head and body length (~49–53% in T. barrerae). Its skull and dentition are characterized by a unique combination of morphological traits, including narrow and posteriorly acuminate nasals (broad and barrel-shaped in T. barrerae ), supraoccipital not laterally expanded (expanded in T. barrerae), and 8-shaped lower 3rd molar (comma-shaped in T. barrerae and † T. cordubensis). Morphometric and genetic evidence supports the specific distinction of this Patagonian endemic Tympanoctomys, also characterized by smaller sperm than T. barrerae . The reduced range of the new species, coupled with its recent extinction from the Chubut River valley and the potential impact of large uranium mining projects in central Patagonia, suggest that this species faces a severe extinction risk in the short term.
Fil: Teta, Pablo Vicente. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Pardiñas, Ulises Francisco J.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Udrizar Sauthier, Daniel Edgardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Gallardo, Milton H.. Instituto de Ciencias Marinas y Limnológicas. Universidad Austral de Chile; Chile
Materia
Pipanacoctomys
Salinoctomys
Octodontids
Taxonomy
Chubut
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:11336/22721
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/22721
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A new species of the tetraploid vizcacha rat Tympanoctomys (Caviomorpha, Octodontidae) from Central Patagonia, ArgentinaTeta, Pablo VicentePardiñas, Ulises Francisco J.Udrizar Sauthier, Daniel EdgardoGallardo, Milton H.PipanacoctomysSalinoctomysOctodontidsTaxonomyChubuthttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1A new living species of the desert-adapted tetraploid rodent Tympanoctomys (Caviomorpha, Octodontidae) is described. The new form is restricted to the type locality in Chubut Province, central Patagonia, Argentina, although is known from at least 4 additional Holocene-aged localities along the middle and lower valley of the Chubut River. Tympanoctomys sp. nov. is smaller than the living T. barrerae, its general coloration is yellowish (reddish in T. barrerae ) and its tail is equal to ~ 43–50% of head and body length (~49–53% in T. barrerae). Its skull and dentition are characterized by a unique combination of morphological traits, including narrow and posteriorly acuminate nasals (broad and barrel-shaped in T. barrerae ), supraoccipital not laterally expanded (expanded in T. barrerae), and 8-shaped lower 3rd molar (comma-shaped in T. barrerae and † T. cordubensis). Morphometric and genetic evidence supports the specific distinction of this Patagonian endemic Tympanoctomys, also characterized by smaller sperm than T. barrerae . The reduced range of the new species, coupled with its recent extinction from the Chubut River valley and the potential impact of large uranium mining projects in central Patagonia, suggest that this species faces a severe extinction risk in the short term.Fil: Teta, Pablo Vicente. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaFil: Pardiñas, Ulises Francisco J.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaFil: Udrizar Sauthier, Daniel Edgardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaFil: Gallardo, Milton H.. Instituto de Ciencias Marinas y Limnológicas. Universidad Austral de Chile; ChileAmerican Society of Mammalogists2014-02-19info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/22721Teta, Pablo Vicente; Pardiñas, Ulises Francisco J.; Udrizar Sauthier, Daniel Edgardo; Gallardo, Milton H.; A new species of the tetraploid vizcacha rat Tympanoctomys (Caviomorpha, Octodontidae) from Central Patagonia, Argentina; American Society of Mammalogists; Journal of Mammalogy; 95; 1; 19-2-2014; 60-710022-23721545-1542CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1644/13-MAMM-A-160info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/jmammal/article-lookup/doi/10.1644/13-MAMM-A-160info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-08-25T15:01:00Zoai:ri.conicet.gov.ar:11336/22721instacron: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:34982026-08-25 15:01:01.14CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A new species of the tetraploid vizcacha rat Tympanoctomys (Caviomorpha, Octodontidae) from Central Patagonia, Argentina
title A new species of the tetraploid vizcacha rat Tympanoctomys (Caviomorpha, Octodontidae) from Central Patagonia, Argentina
spellingShingle A new species of the tetraploid vizcacha rat Tympanoctomys (Caviomorpha, Octodontidae) from Central Patagonia, Argentina
Teta, Pablo Vicente
Pipanacoctomys
Salinoctomys
Octodontids
Taxonomy
Chubut
title_short A new species of the tetraploid vizcacha rat Tympanoctomys (Caviomorpha, Octodontidae) from Central Patagonia, Argentina
title_full A new species of the tetraploid vizcacha rat Tympanoctomys (Caviomorpha, Octodontidae) from Central Patagonia, Argentina
title_fullStr A new species of the tetraploid vizcacha rat Tympanoctomys (Caviomorpha, Octodontidae) from Central Patagonia, Argentina
title_full_unstemmed A new species of the tetraploid vizcacha rat Tympanoctomys (Caviomorpha, Octodontidae) from Central Patagonia, Argentina
title_sort A new species of the tetraploid vizcacha rat Tympanoctomys (Caviomorpha, Octodontidae) from Central Patagonia, Argentina
dc.creator.none.fl_str_mv Teta, Pablo Vicente
Pardiñas, Ulises Francisco J.
Udrizar Sauthier, Daniel Edgardo
Gallardo, Milton H.
author Teta, Pablo Vicente
author_facet Teta, Pablo Vicente
Pardiñas, Ulises Francisco J.
Udrizar Sauthier, Daniel Edgardo
Gallardo, Milton H.
author_role author
author2 Pardiñas, Ulises Francisco J.
Udrizar Sauthier, Daniel Edgardo
Gallardo, Milton H.
author2_role author
author
author
dc.subject.none.fl_str_mv Pipanacoctomys
Salinoctomys
Octodontids
Taxonomy
Chubut
topic Pipanacoctomys
Salinoctomys
Octodontids
Taxonomy
Chubut
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A new living species of the desert-adapted tetraploid rodent Tympanoctomys (Caviomorpha, Octodontidae) is described. The new form is restricted to the type locality in Chubut Province, central Patagonia, Argentina, although is known from at least 4 additional Holocene-aged localities along the middle and lower valley of the Chubut River. Tympanoctomys sp. nov. is smaller than the living T. barrerae, its general coloration is yellowish (reddish in T. barrerae ) and its tail is equal to ~ 43–50% of head and body length (~49–53% in T. barrerae). Its skull and dentition are characterized by a unique combination of morphological traits, including narrow and posteriorly acuminate nasals (broad and barrel-shaped in T. barrerae ), supraoccipital not laterally expanded (expanded in T. barrerae), and 8-shaped lower 3rd molar (comma-shaped in T. barrerae and † T. cordubensis). Morphometric and genetic evidence supports the specific distinction of this Patagonian endemic Tympanoctomys, also characterized by smaller sperm than T. barrerae . The reduced range of the new species, coupled with its recent extinction from the Chubut River valley and the potential impact of large uranium mining projects in central Patagonia, suggest that this species faces a severe extinction risk in the short term.
Fil: Teta, Pablo Vicente. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Pardiñas, Ulises Francisco J.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Udrizar Sauthier, Daniel Edgardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Gallardo, Milton H.. Instituto de Ciencias Marinas y Limnológicas. Universidad Austral de Chile; Chile
description A new living species of the desert-adapted tetraploid rodent Tympanoctomys (Caviomorpha, Octodontidae) is described. The new form is restricted to the type locality in Chubut Province, central Patagonia, Argentina, although is known from at least 4 additional Holocene-aged localities along the middle and lower valley of the Chubut River. Tympanoctomys sp. nov. is smaller than the living T. barrerae, its general coloration is yellowish (reddish in T. barrerae ) and its tail is equal to ~ 43–50% of head and body length (~49–53% in T. barrerae). Its skull and dentition are characterized by a unique combination of morphological traits, including narrow and posteriorly acuminate nasals (broad and barrel-shaped in T. barrerae ), supraoccipital not laterally expanded (expanded in T. barrerae), and 8-shaped lower 3rd molar (comma-shaped in T. barrerae and † T. cordubensis). Morphometric and genetic evidence supports the specific distinction of this Patagonian endemic Tympanoctomys, also characterized by smaller sperm than T. barrerae . The reduced range of the new species, coupled with its recent extinction from the Chubut River valley and the potential impact of large uranium mining projects in central Patagonia, suggest that this species faces a severe extinction risk in the short term.
publishDate 2014
dc.date.none.fl_str_mv 2014-02-19
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/11336/22721
Teta, Pablo Vicente; Pardiñas, Ulises Francisco J.; Udrizar Sauthier, Daniel Edgardo; Gallardo, Milton H.; A new species of the tetraploid vizcacha rat Tympanoctomys (Caviomorpha, Octodontidae) from Central Patagonia, Argentina; American Society of Mammalogists; Journal of Mammalogy; 95; 1; 19-2-2014; 60-71
0022-2372
1545-1542
CONICET Digital
CONICET
url http://hdl.handle.net/11336/22721
identifier_str_mv Teta, Pablo Vicente; Pardiñas, Ulises Francisco J.; Udrizar Sauthier, Daniel Edgardo; Gallardo, Milton H.; A new species of the tetraploid vizcacha rat Tympanoctomys (Caviomorpha, Octodontidae) from Central Patagonia, Argentina; American Society of Mammalogists; Journal of Mammalogy; 95; 1; 19-2-2014; 60-71
0022-2372
1545-1542
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1644/13-MAMM-A-160
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/jmammal/article-lookup/doi/10.1644/13-MAMM-A-160
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
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Society of Mammalogists
publisher.none.fl_str_mv American Society of Mammalogists
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 13.265058

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