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1 October 2014 Systematics of the Neotoma mexicana species group (Mammalia: Rodentia: Cricetidae) in Mesoamerica: new molecular evidence on the status and relationships of N. ferruginea Tomes, 1862
Nicté Ordóñez-Garza, Cody W. Thompson, Margaret K. Unkefer, Cody W. Edwards, James G. Owen, Robert D. Bradley
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Abstract

Analyses of the mitochondrial cytochrome-b gene were used to determine levels of genetic differentiation and patterns of relationship among members of the Neotoma mexicana (Mexican woodrat) species group in Mesoamerica. Three well-supported clades were obtained that conform to the species N. ferruginea Tomes, 1862, N. mexicana Baird, 1855, and N. picta Goldman, 1904. Neotoma ferruginea is the senior name for the clade that contains samples from southern Mexico and Nuclear Central America previously identified as N. isthmica Goldman, 1904, or as subspecies of N. mexicana (chamula Goldman, 1909; vulcani Sanborn, 1935). The phylogeographic pattern observed within the N. mexicana species group resembles that reported for other vertebrates co-distributed in mountains to the west (Trans-Mexican Neovolcanic Belt, Oaxacan sierras) and east (highlands of Chiapas, Mexico, and Nuclear Central America) of the Isthmus of Tehuantepec.

Análisis filogenéticos del gen mitocondrial Citocromo b se utilizaron para determinar los niveles de diferenciación genética y los patrones de relaciones entre miembros del grupo de especies de Neotoma mexicana en Mesoamerica. Se obtuvieron tres clados bien soportandos que están conformados por las especies Neotoma ferruginea Tomes, 1862; N. mexicana Baird, 1855; y N. picta Goldman, 1904. Neotoma ferruginea es el nombre más antiguo para el clado que contiene muestras del sur de México y Centro América Nuclear que previamente fueron identificadas como N. isthmica Goldman, 1904, y una subespecie de N. mexicana (chamula Goldman, 1909; vulcani Sanborn, 1935). El patrón filogeográfico observado entre el grupo de especies de N. mexicana se asemeja al reportado para otros vertebrados co-distribuidos en las montañas del Oeste (Eje neovolcánico transversal, Sierras de Oaxaca) y el Este (tierras altas de Chiapas, México y Centro América Nuclear) del Itsmo de Tehuantepec.

Nicté Ordóñez-Garza, Cody W. Thompson, Margaret K. Unkefer, Cody W. Edwards, James G. Owen, and Robert D. Bradley "Systematics of the Neotoma mexicana species group (Mammalia: Rodentia: Cricetidae) in Mesoamerica: new molecular evidence on the status and relationships of N. ferruginea Tomes, 1862," Proceedings of the Biological Society of Washington 127(3), 518-532, (1 October 2014). https://doi.org/10.2988/0006-324X-127.3.518
Published: 1 October 2014
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KEYWORDS
DNA sequences
Mesoamerica
Neotoma
taxonomy
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