A newly recognized clade of trans-Andean Oryzomyini (Rodentia: Cricetidae), with description of a new genus

Pine, Ronald H.; Timm, Robert M.; Weksler, Marcelo

doi:10.1644/11-mamm-a-012.1

Cited by 35 publications

(46 citation statements)

References 41 publications

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“…Oligoryzomys fulvecens had not been previously recorded in the northern Cordillera Central ( G ó mez-Laverde 1994 , Delgado-V and Palacio-V 2002 , G ó mez Valencia 2004 , S á nchez-Giraldo 2006 , Rojas Bri ñ ez 2008 ) and, although its known distribution includes habitats ranging from lowlands up to 2000 m, the species is rarely found above 1500 m ( Weksler et al 2008 ). Similarly, four sigmodontine individuals were positively identified as members of the Oryzomyini tribe, but they could not be associated to any of the currently described genera of the tribe ( Weksler et al 2006, Percequillo et al 2011, Pine et al 2012. Understanding the taxonomic identity of these specimens is a matter that merits its own research and is a topic on which we are currently working.…”

Section: Species Compositionmentioning

confidence: 99%

Dynamics of species composition of small non-volant mammals from the northern Cordillera Central of Colombia

Sánchez‐Giraldo

Díaz‐Nieto²

2015

Mammalia

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On the basis of our recent fieldwork and historical records, we document the diversity of small non-volant mammals in the northern end of Cordillera Central of Colombia, an important region in the context of vertebrate biodiversity. From February 2004 to February 2006, we completed mammal surveys in three localities at the department of Antioquia, with elevations ranging from 1650 to 2000 m. We recorded a total of 14 species: three marsupials, one shrew, one heteromyid, and nine sigmodontinae rodents, including three species endemic in Cordillera Central. The rodents Heteromys australis , Nephelomys pectoralis , and Rhipidomys latimanus were recorded in all localities. Nephelomys pectoralis was captured in all surveys and was the most abundant species. Nearby historical records exist for 16 species, seven of which were not captured during our surveys. The community of small mammals in the northern Cordillera Central has species richness similar or higher than that in other Andean localities with a broader elevational range. We show that small mammal communities from middle elevations are a mixture of middle elevation endemics and highland species, but with little contribution from the lowlands. Finally, the occurrence of endemic and threatened species in this region suggests its importance from a conservational and biogeographical standpoint for small terrestrial mammals.

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Section: Species Compositionmentioning

confidence: 99%

Dynamics of species composition of small non-volant mammals from the northern Cordillera Central of Colombia

Sánchez‐Giraldo

Díaz‐Nieto²

2015

Mammalia

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“…Employing the database of Prado & Percequillo () and using a quantitative approach, the ndm / vndm method (Szumik et al ., ; Szumik & Goloboff, ), our aims were to evaluate: (1) whether species richness and the geographical distribution of the tribe Oryzomyini in South and Central America support the inference of consistent areas of endemism in South America, employing different grid sizes; and (2) whether such areas of endemism are congruent with previous areas of endemism (e.g. Müller, ; Cracraft, ) and regions of greater species richness and diversity (Reig, ; Amori et al ., ; Prado & Percequillo, ) in South America, and are also in accordance with the evolutionary history of the tribe (Percequillo et al ., ; Pine et al ., ; Machado et al ., ; Parada et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Species richness and areas of endemism of oryzomyine rodents (Cricetidae, Sigmodontinae) in South America: an ndm/vndm approach

Prado

Brennand

Godoy

et al. 2014

Journal of Biogeography

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Aim To infer areas of endemism for the tribe Oryzomyini in South America by employing a database of species richness and geographical distribution, and to compare these results with areas of endemism and species richness proposed in the literature for other taxa. Location We analysed specimens of the tribe Oryzomyini distributed throughout South and Central America, which are housed in European, North and South American museums and collections. Methods We analysed 2768 occurrence records for 102 species of the tribe Oryzomyini using the ndm/vndm algorithm and three different grid sizes to assess the possible effects of grid cell area on the results. Results Using the overlap of consensus areas in South America, we identified three generalized areas of endemism for the Oryzomyini: north‐western South America (NWSA), eastern South American (ESA), and northern South America (NSA); we also identified the Galápagos archipelago (GA) as an area of endemism. Main conclusions Areas of endemism detected in the continental portion of South America include its three main mountain chains: the Andes Cordillera, the Guyanan Shields, and an area east of the Brazilian Shield named Serra do Mar. Each of these regions encompasses many different types of vegetation, and the species richness and composition of the areas of endemism of the tribe are directly related to this environmental diversity. Different grid sizes affected the distributional heterogeneity of the consensus areas. The smallest grid cell size identified mainly Andean areas, which contain a higher number of more exclusive species in a small area along a steep elevational gradient. In contrast, the largest grid size identified areas of endemism along an environmental gradient that co‐varied with latitude and longitude. The identified areas of endemism are corroborated by previous studies on other taxa.

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“…Predominantly distributed in South America, sigmodontines also reach Central and North America, and one extant genus is endemic to the Galapagos Islands (D'Elía 2003a). Remarkably, new sigmodontine genera are still being erected on the basis of both revisionary museum work and from newly discovered species (e.g., Pardiñas et al 2009a;Percequillo et al 2011;Pine et al 2012;Alvarado-Serrano and D'Elía 2013;see comments in D'Elía and Pardiñas 2007). Similarly, statuses of several sigmodontine taxonomic forms at the species level are unclear (e.g., Alarcón et al 2011;Bonvicino et al 2012).…”

Section: Introductionmentioning

confidence: 99%

The phylogenetic position of the enigmatic Atlantic forest-endemic spiny mouse Abrawayaomys (Rodentia: Sigmodontinae)

et al. 2013

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Background: The phylogenetic position of the sigmodontine genus Abrawayaomys, historically assigned to the tribe Thomasomyini or considered a sigmodontine incertae sedis, was assessed on the basis of nuclear and mitochondrial DNA sequences obtained from four individuals from different localities in the Atlantic forest of Brazil. Sequences of Abrawayaomys were analyzed in the context of broad taxonomic matrices by means of maximumlikelihood (ML) and Bayesian analyses (BA). Results: The phylogenetic position of Abrawayaomys differed depending on the gene analyzed and the analysis performed (interphotoreceptor retinoid-binding protein (IRBP) ML: sister to Thomasomyini; IRBP BA: sister to Akodontini; cytochrome (Cyt) b ML: sister to Neotomys; and Cyt b BA: sister to Reithrodontini). With the sole exception of the BA based on Cyt b sequences, where the Abrawayaomys-Reithrodon clade had strong support, all sistergroup relationships involving Abrawayaomys lacked any significant support.

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A newly recognized clade of trans-Andean Oryzomyini (Rodentia: Cricetidae), with description of a new genus

Cited by 35 publications

References 41 publications

Dynamics of species composition of small non-volant mammals from the northern Cordillera Central of Colombia

Dynamics of species composition of small non-volant mammals from the northern Cordillera Central of Colombia

Species richness and areas of endemism of oryzomyine rodents (Cricetidae, Sigmodontinae) in South America: an ndm/vndm approach

The phylogenetic position of the enigmatic Atlantic forest-endemic spiny mouse Abrawayaomys (Rodentia: Sigmodontinae)

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