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Identification and distribution of cotton rats, genus Sigmodon (Muridae : Sigmodontinae), of Nayarit, Mexico

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dc.contributor.author Carleton, Michael D. en
dc.contributor.author Fisher, Robert D. en
dc.contributor.author Gardner, Alfred L. en
dc.date.accessioned 2012-07-31T13:53:15Z
dc.date.available 2012-07-31T13:53:15Z
dc.date.issued 1999
dc.identifier.citation Carleton, Michael D., Fisher, Robert D., and Gardner, Alfred L. 1999. "<a href="https%3A%2F%2Frepository.si.edu%2Fhandle%2F10088%2F18665">Identification and distribution of cotton rats, genus Sigmodon (Muridae : Sigmodontinae), of Nayarit, Mexico</a>." <em>Proceedings of the Biological Society of Washington</em>. 112 (4):813&ndash;856. en
dc.identifier.issn 0006-324X
dc.identifier.uri http://hdl.handle.net/10088/18665
dc.description.abstract Morphological, chromosomal, distributional, and ecological data are presented for three species of Sigmodon (S. alleni, S. arizonae, and S. mascotensis) from the state of Nayarit, Mexico. The species were collected in all possible pairwise combinations of sympatry, including the first record of such documented for S. arizonae and S. mascotensis. Emphasis is devoted to the discrimination of S. arizonae and S. mascotensis, from each other and from typical S. hispidus, using qualitative features of the skin and skull and morphometric analyses of craniodental measurements. Based on these results and examination of type specimens, additional synonyms of S. mascotensis are identified, with reassignment of two forms, tonalensis Bailey (1902) and obvelatus Russell (1952), currently mistaken as subspecies of S. hispidus. Sigmodon mascotensis emerges as a species distributed from southern Nayarit and Zacatecas to extreme western Chiapas, where it inhabits deciduous or semideciduous tropical vegetation having a pronounced dry season. These reallocations and other reidentifications remove any documentation for S. hispidus along the entire Pacific versant of Mexico. en
dc.relation.ispartof Proceedings of the Biological Society of Washington en
dc.title Identification and distribution of cotton rats, genus Sigmodon (Muridae : Sigmodontinae), of Nayarit, Mexico en
dc.type Journal Article en
dc.identifier.srbnumber 75380
rft.jtitle Proceedings of the Biological Society of Washington
rft.volume 112
rft.issue 4
rft.spage 813
rft.epage 856
dc.description.SIUnit NMNH en
dc.description.SIUnit NH-Vertebrate Zoology en
dc.citation.spage 813
dc.citation.epage 856


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