Molecular Divergence and Phylogenetic Relationships of Chinchillids (Rodentia: Chinchillidae)

Spotorno, Ángel E.; Valladares, J. P.; Marín, Javier

doi:10.1644/brb-119

Cited by 52 publications

(64 citation statements)

References 19 publications

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“…Molecular studies confirmed that the extant Chinchillidae are a monophyletic group (Spotorno et al, 2004) and suggest a close relationship with Dinomyidae (Huchon & Douzery, 2001). Extant chinchillids have euhypsodont cheek teeth, composed of laminar and oblique prisms, labially (upper teeth) or lingually (lower teeth) united, with a very thin interlaminar cement layer, bullae well developed and locomotion partially saltatory (Wood, 1955;Bondesio et al, 1975).…”

Section: P R O V a Smentioning

confidence: 93%

Chinchillidae and Dolichotinae rodents (Rodentia: Hystricognathi: Caviomorpha) from the late Pleistocene of Southern Brazil

Kerber¹,

Lopes²,

Vucetich³

et al. 2011

Rev. bras. paleontol.

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-New records of rodents from the late Pleistocene Chuí Creek, Rio Grande do Sul State, southern Brazil, are here described. A partial dentary with fragmented cheek teeth is identified as Chinchillidae, Lagostomus Brookes cf. L. maximus (Desmarest). Other two specimens are identified as cheek teeth of Dolichotinae indet. (Caviidae). Pleistocene fossils of Lagostomus were previously reported for Argentina and Uruguay. The material of Lagostomus from Chuí Creek represents the first confidently record of this taxon Brazil. Pleistocene fossil remains of Dolichotinae have been found in Argentina, Uruguay and other areas of southern Brazil, though the Brazilian find lack precise stratigraphic information. These new records widen the paleobiogeographic distribution of Lagostomus and confirm the presence of Dolichotinae during the late Pleistocene of southern Brazil.Key words: Lagostomus, Lagostominae, Dolichotinae, Chuí Creek, Rio Grande do Sul, Quaternary.RESUMO -Este trabalho reporta novos materiais de roedores provenientes dos depósitos fossilíferos do arroio Chuí (Rio Grande do Sul, sul do Brasil). O material de Chinchillidae é identificado como Lagostomus Brookes cf. L. maximus (Desmarest) e é representado por um dentário esquerdo faltando sua região posterior, com o incisivo preservado e a série p4-m3 fragmentada. Os outros dois espécimes são identificados como molariformes de Dolichotinae indet. (Caviidae). Os fósseis de Lagostomus durante o Pleistoceno estavam restritos a Argentina e Uruguai. O material aqui reportado caracteriza o primeiro registro seguro deste táxon no Brasil. Fósseis de Dolichotinae têm sido encontrados em depósitos pleistocênicos da Argentina, Uruguai e sul do Brasil, porém este último provém de uma localidade sem contexto estratigráfico preciso. Desta forma, estes novos registros ampliam a distribuição paleobiogeográfica de Lagostomus e confirmam a presença de Dolichotinae durante o Pleistoceno final do sul do Brasil. Palavras-chave:Lagostomus, Lagostominae, Dolichotinae, arroio Chuí, Rio Grande do Sul, Quaternário.

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Section: P R O V a Smentioning

confidence: 93%

Chinchillidae and Dolichotinae rodents (Rodentia: Hystricognathi: Caviomorpha) from the late Pleistocene of Southern Brazil

Kerber¹,

Lopes²,

Vucetich³

et al. 2011

Rev. bras. paleontol.

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“…A colony reported by a mining company "Cerro Blanco" from White Mountain Titanium Corporation, near to Vallenar, Atacama region, where in their line base mentioned a record of C. lanigera in winter, 2012 (see http://seia.sea.gob.cl). On the other hand, colonies of C. chinchilla from Atacama region were reported nearly to a mineral project Lagos et al 2012 Jiménez 1987, 1989, 1995, 1996, Spotorno et al 1998, Spotorno et al 2004a,b, Mohlis 1983, Valladares 2012, Cortés et al 2002, Lagos et al 2012, Tirado et al 2012, * this work. WPA: Wild Protected Areas.…”

Section: Conservation Statusmentioning

confidence: 68%

“…Cabrera (1960Cabrera ( , 1961, Ipinza (1969), Tamayo & Frassinetti (1980) and Woods (1993); Redford & Eisenberg (1992) and Spotorno et al (2004a,b) recognized C. lanigera Molina (1782) and C. brevicaudata Waterhouse (1848); but Anderson (1997) and Valladares (2002) recognized C. chinchilla Lichtenstein (1830) for the "short tail" chinchilla species. Valladares (2002) and Spotorno et al (2004a) recognized two species based in molecular divergence from part of cytocrome b gene sequences. Tate (1935) recognized Chinchilla as the genotype and the species lanigera Molina, but he was not sure about the taxonomic position of Chinchilla chinchilla and Chinchilla brevicaudata.…”

Section: Taxonomymentioning

confidence: 99%

“…About the taxonomy, the major biological questions is the number of species of chinchillas to be recognized (Anderson 1997), one (Osgood 1941, 1943, Allen 1942; two (Cabrera &Yepes 1960;Cabrera 1961;Spotorno et al 2004a), or three (Prell 1934a;Bidlingmaier 1937), but according to Miller et al (1983) this taxonomic issue could never be resolved because there were no wild colonies. Other unresolved topics in taxonomy is the determination of a neotype for the Chinchilla genus (Bennet 1829), lanigera (Molina 1782) and chinchilla (Lichtenstein 1830) species, to contribute to the taxonomic stability suggested by the International Commission on Zoological Nomenclature (ICZN -case 3278; Valladares & Spotorno 2003).…”

Section: Introductionmentioning

confidence: 99%

“…Although both species were considered extinct during 1960´s, C. chinchilla was rediscovery by Spotorno et al (1998) and Valladares et al (2012); and C. lanigera by Mohlis (1983) and Spotorno et al (2004a).…”

Section: Introductionmentioning

confidence: 99%

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Natural history of the Chinchilla genus (Bennett 1829): Considerations of their ecology, taxonomy and conservation status

2014

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Over the last years there has been new and valuable information in both wild chinchillas, however this is still insuffi cient for effective protection. In this paper we review some fundamental aspects of its natural history, synthesizing and delivering new information about their ecology, taxonomy and conservation status, based on the review of available literature, and fi eld data collection. In relation to their ecology we have been identifi ed new colonies of both species, for scientifi c research as well as environmental technical reports. For most of these colonies we identifi ed vegetation to which they are associated, predators and other sympatric rodent species. The taxonomy of these species is controversial. A proposal was submitted to ICZN in 2003, and the recommendations were to describe a neotype for genus and species, but the original specimens described by Bennett (1829), Lichtenstein (1830) and Waterhouse (1844) are in museums from Europe and should be considered as syntypes. Conservation status of both species is critically endangered because most colonies are threatened by mining exploitation. Therefore, it is essential to explore new regions to identify new colonies and compare them with modern methods such as molecular markers. Finally, with this information we argue the need to develop a conservation programs for both species; it should consider critical areas of their biology, such as ecology, genetics and reproduction. KEYWORDS:Chinchilla, conservation plans, critical endangered, distribution, endemism, new colonies. RESUMENEn los últimos años se ha generado nueva y valiosa información de las dos especies silvestres de chinchillas; sin embargo ésta sigue siendo insufi ciente para una protección efectiva. En este trabajo hacemos una revisión de algunos aspectos fundamentales de su historia natural, sintetizando y entregando nuevos antecedentes de su ecología, taxonomía y estado de conservación, en base a la revisión de la literatura disponible, y toma de datos en el campo. En relación a su ecología, hemos identifi cado nuevas colonias de ambas especies, tanto por investigación científi ca como por reportes técnicos ambientales. Para la mayoría de esas colonias se ha identifi cado la vegetación a la que están asociadas, depredadores y otras especies de roedores simpátridos. La taxonomía de ambas especies ha sido controversial. Una propuesta fue sometida a la ICZN en el 2003 y las recomendaciones fueron describir un neotipo para el género y ambas especies; sin embargo, los especímenes originales descritos por Bennett (1829), Lichtenstein (1830) y Waterhouse (1844) existen en museos de Europa y deben ser considerados como los respectivos sintipos. Finalmente, el estado de conservación de estas especies ha sido catalogado como críticamente en peligro tanto por instituciones nacionales como internacionales, esto debido a que la mayoría de las colonias son pequeñas, fragmentadas y aisladas, sin embargo, ahora la mayor amenaza es la relación geográfi ca de las nuevas colonias con áreas de e...

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The caviomorph rodents

Ojeda

Novillo

2016

Sociobiology of Caviomorph Rodents

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Molecular Divergence and Phylogenetic Relationships of Chinchillids (Rodentia: Chinchillidae)

Cited by 52 publications

References 19 publications

Chinchillidae and Dolichotinae rodents (Rodentia: Hystricognathi: Caviomorpha) from the late Pleistocene of Southern Brazil

Chinchillidae and Dolichotinae rodents (Rodentia: Hystricognathi: Caviomorpha) from the late Pleistocene of Southern Brazil

Natural history of the Chinchilla genus (Bennett 1829): Considerations of their ecology, taxonomy and conservation status

The caviomorph rodents

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