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Distribution and Systematics of Peromyscus (Mammalia: Rodentia) of Nayarit, Mexico
Michael D. Carleton, Don E. Wilson, Alfred L. Gardner and Michael A. Bogan
46 pages, 14 figures, 8 tables
1982 (Date of Issue: 14 September 1982)
Number 352, Smithsonian Contributions to Zoology
DOI: 10.5479/si.00810282.352
Go to : Article in Open SI

Full Description (from SIRIS)


Distributional patterns, ecological data, and the systematic status of Peromyscus maniculatus, P. boylii, P. simulus, P. madrensis, P. pectoralis, P. spicilegus, and P. melanophrys are presented for the state of Nayarit, Mexico. The Peromyscus boylii species group is accorded special emphasis because of the uncertainty regarding the relationships and taxonomic level of forms included within it. On the basis of morphometric analyses of external and cranial measurements, examination of chromosomal preparations, and documentation of sympatry, madrensis, simulus, and spicilegus are considered species distinct from boylii, instead of subspecies thereof. In Nayarit, Peromyscus simulus is confined to the coastal-plain region (sea level to 100 m); Peromyscus madrensis occupies the Tres Marias Islands; Peromyscus spicilegus inhabits intermediate montane zones (100 to 1600 m) but has been found as high as 2100 m; and Peromyscus boylii occurs at high elevations (1900 to 2100 m) in the eastern mountains.

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