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Phylogenetic position and morphology of Abrothrix illutea Thomas, 1925, with comments on the incongruence between gene trees of Abrothrix (Rodentia, Cricetidae) and their implications for the delimitation of the genus

2011; Pensoft Publishers; Volume: 87; Issue: 2 Linguagem: Inglês

10.1002/zoos.201100005

1860-0743

Pablo Teta, Guillermo D’Elía, Ulyses F. J. Pardiñas, J. Pablo Jayat, Pablo E. Ortíz,

Genetic diversity and population structure

Zoosystematics and EvolutionVolume 87, Issue 2 p. 227-241 Original Paper Phylogenetic position and morphology of Abrothrix illutea Thomas, 1925, with comments on the incongruence between gene trees of Abrothrix (Rodentia, Cricetidae) and their implications for the delimitation of the genus Pablo Teta, Pablo Teta Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", Avenida Ángel Gallardo 470, (C1405DJR) Buenos Aires, ArgentinaSearch for more papers by this authorGuillermo D'Elía, Corresponding Author Guillermo D'Elía guille.delia@gmail.com Instituto de Ciencias de la Tierra Evolución, Universidad Austral de Chile, Campus Isla Teja s/n, casilla 567, Valdivia, ChileInstituto de Ciencias de la Tierra Evolución, Universidad Austral de Chile, Campus Isla Teja s/n, casilla 567, Valdivia, ChileSearch for more papers by this authorUlyses F. J. Pardiñas, Ulyses F. J. Pardiñas Unidad de Investigación Diversidad, Sistemática y Evolución, Centro Nacional Patagónico, Casilla de Correo 128, 9120 Puerto Madryn, Chubut, ArgentinaSearch for more papers by this authorJ. Pablo Jayat, J. Pablo Jayat Laboratorio de Investigaciones Ecológicas de las Yungas (LIEY), Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán, Casilla de Correo 34, 4107 Yerba Buena, Tucumán, ArgentinaSearch for more papers by this authorPablo E. Ortíz, Pablo E. Ortíz Cátedra de Paleontología, Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán, Miguel Lillo 205, 4000 San Miguel de Tucumán, Tucumán, ArgentinaSearch for more papers by this author Pablo Teta, Pablo Teta Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", Avenida Ángel Gallardo 470, (C1405DJR) Buenos Aires, ArgentinaSearch for more papers by this authorGuillermo D'Elía, Corresponding Author Guillermo D'Elía guille.delia@gmail.com Instituto de Ciencias de la Tierra Evolución, Universidad Austral de Chile, Campus Isla Teja s/n, casilla 567, Valdivia, ChileInstituto de Ciencias de la Tierra Evolución, Universidad Austral de Chile, Campus Isla Teja s/n, casilla 567, Valdivia, ChileSearch for more papers by this authorUlyses F. J. Pardiñas, Ulyses F. J. Pardiñas Unidad de Investigación Diversidad, Sistemática y Evolución, Centro Nacional Patagónico, Casilla de Correo 128, 9120 Puerto Madryn, Chubut, ArgentinaSearch for more papers by this authorJ. Pablo Jayat, J. Pablo Jayat Laboratorio de Investigaciones Ecológicas de las Yungas (LIEY), Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán, Casilla de Correo 34, 4107 Yerba Buena, Tucumán, ArgentinaSearch for more papers by this authorPablo E. Ortíz, Pablo E. Ortíz Cátedra de Paleontología, Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán, Miguel Lillo 205, 4000 San Miguel de Tucumán, Tucumán, ArgentinaSearch for more papers by this author First published: 23 September 2011 https://doi.org/10.1002/zoos.201100005Citations: 5AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Abstract Abrothrix illutea Thomas, 1925 is a poorly known sigmodontine rodent of the recently diagnosed tribe Abrotrichini. Here we report new locality records in northwestern Argentina, describe in detail several morphological traits of this mouse and provide an emended diagnosis for the species. Abrothrix illutea is characterized by a unique combination of characters, including uniform dark olive-grey dorsal coloration; skull robust, with the interorbital constriction hourglass shaped and smoothly rounded; muzzle elongate; nasals and premaxillae slightly projected anterior to the incisors; palate ending at about the plane of the last upper molars; upper incisors broad and orthodont; molars hypsodont, M1 with anteroloph and mesoloph well developed; stomach unilocular-hemiglandular; terminal crater of the phallus ventrally directed; cartilaginous distal baculum reduced, composed of two lateral digits. These morphological features are discussed at the light of phylogenetic analyses of nuclear and mitochondrial DNA sequences. Results of these analyses, the first to include A. illutea, are incongruent between loci. It is suggested that the nuclear based tree better reflects the pattern of morphological variation, and presumably the species tree, than the mitochondrial tree. These aspects are discussed in reference to the contents and limits of the genus Abrothrix. (© 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) Citing Literature Volume87, Issue2September 2011Pages 227-241 RelatedInformation