Rodents of the eastern and western slopes of the Tropical Andes: phylogenetic and taxonomic insights using DNA barcodes

Pinto, C. Miguel; Ojala-Barbour, Reed; Brito, Jorge; Menchaca, Angélica; Carvalho, André L. G.; Weksler, Marcelo; Amato, George; Lee, Thomas E.

doi:10.12933/therya-18-430

Cited by 18 publications

(12 citation statements)

References 31 publications

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“…After more than two centuries of active mammalogy research ( Tirira, 2014 ), intensive field work was conducted in few Ecuadorian places. Examples for those places in the eastern Andes are Papallacta ( Voss, 2003 ), Guandera Biological Reserve ( Lee et al, 2015 ), Sangay National Park ( Brito & Ojala-Barbour, 2016 ), Yacuri National Park ( Lee et al, 2018 ); and in the western Andes are Cajas National Park ( Barnett, 1999 ), Otonga Reserve ( Jarrín, 2001 ; Pinto et al, 2018 ), Pululahua Geobotanical Reserve ( Curay, Romero & Brito, 2019 ), and Polylepis Forest ( Ojala-Barbour, Brito & Teska, 2019 ). The interest in complementing biodiversity studies has led to expeditions to little-known locations, such as the Reserva Drácula and also triggered revisions of museum specimens.…”

Section: Discussionmentioning

confidence: 99%

“…Mindomys : Pinto et al (2018 : figs. 2, 5, and Appendix); part, not Mindomys Weksler, Percequillo & Voss, 2006 .…”

Section: Systematic Accountsmentioning

confidence: 99%

“…In the montane cloud forests of the Chocó also occurs the poorly-known Mindomys hammondi ( Thomas, 1913 ), one of the most enigmatic rodent taxa of South America. Mindomys is a monotypic genus with uncertain phylogenetic position ( Weksler, 2006 ; Ronez et al, 2020b ), restricted to Ecuadorean forests between Mindo and Alto Tambo ( Thomas, 1913 ; Weksler, Percequillo & Voss, 2006 ; Percequillo, 2015 ; Pinto et al, 2018 ).…”

Section: Introductionmentioning

confidence: 99%

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A new genus of oryzomyine rodents (Cricetidae, Sigmodontinae) with three new species from montane cloud forests, western Andean cordillera of Colombia and Ecuador

Brito

Koch

Percequillo

et al. 2020

PeerJ

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The Andean cloud forests of western Colombia and Ecuador are home to several endemic mammals; members of the Oryzomyini, the largest Sigmodontinae tribe, are extensively represented in the region. However, our knowledge about this diversity is still incomplete, as evidenced by several new taxa that have been described in recent years. Extensive field work in two protected areas enclosing remnants of Chocó montane forest recovered a high diversity of small mammals. Among them, a medium-sized oryzomyine is here described as a new genus having at least three new species, two of them are named and diagnosed. Although externally similar to members of the genera Nephelomys and Tanyuromys, the new genus has a unique molar pattern within the tribe, being characterized by a noticeable degree of hypsodonty, simplification, lamination, and third molar compression. A phylogeny based on a combination of molecular markers, including nuclear and mitochondrial genes, and morphological data recovered the new genus as sister to Mindomys, and sequentially to Nephelomys. The new genus seems to be another example of a sigmodontine rodent unique to the Chocó biogeographic region. Its type species inhabits cloud forest between 1,600 and 2,300 m in northernmost Ecuador (Carchi Province); a second species is restricted to lower montane forest, 1,200 m, in northern Ecuador (Imbabura Province); a third putative species, here highlighted exclusively by molecular evidence from one immature specimen, is recorded in the montane forest of Reserva Otonga, northern Ecuador (Cotopaxi Province). Finally, the new genus is also recorded in southernmost Colombia (Nariño Department), probably represented there also by a new species. These species are spatially separated by deep river canyons through Andean forests, resulting in marked environmental discontinuities. Unfortunately, Colombian and Ecuadorian Pacific cloud forests are under rapid anthropic transformation. Although the populations of the type species are moderately abundant and occur in protected areas, the other two persist in threatened forest fragments.

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Section: Discussionmentioning

confidence: 99%

“…Mindomys : Pinto et al (2018 : figs. 2, 5, and Appendix); part, not Mindomys Weksler, Percequillo & Voss, 2006 .…”

Section: Systematic Accountsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A new genus of oryzomyine rodents (Cricetidae, Sigmodontinae) with three new species from montane cloud forests, western Andean cordillera of Colombia and Ecuador

Brito

Koch

Percequillo

et al. 2020

PeerJ

Self Cite

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show abstract

“…Referred material: QCAZ 8720, preserved as skull (Supplemental Information S15) and body in fluid, collected at Otonga (0.4189 N, 79.0039 W, 2,065 m), Provincia Cotopaxi, Ecuador (Pinto et al, 2018); ICN 13663 and ICN 21487, preserved as skulls and skins, collected at the Fundación Ecológica Los Colibries de Altaquer (1.293111 N, 78.073972 W, 1,100 m), Reserva del río Ñambi, Corregimiento Altaquer, Municipio de Barbacoas, Departamento Nariño, Colombia (Cadena, Anderson & Rivas-Pava, 1998).…”

Section: Systematic Accountsmentioning

confidence: 99%

“…A recent example is the recognition of a new species of Tanyuromys, T. thomasleei Timm, Pine & Hanson, 2018. In the montane cloud forests of the Chocó also occurs the poorly-known Mindomys hammondi (Thomas, 1913), one of the most enigmatic rodent taxa of South America. Mindomys is a monotypic genus with uncertain phylogenetic position (Weksler, 2006;Ronez et al, 2020b), restricted to Ecuadorean forests between Mindo and Alto Tambo (Thomas, 1913;Weksler, Percequillo & Voss, 2006;Percequillo, 2015;Pinto et al, 2018).…”

Section: Introductionmentioning

confidence: 99%