The Herpetofauna of Coahuila, Mexico: Composition, Distribution, and Conservation Status 1David Lazcano, 1Manuel Nevárez-De Los Reyes, 2Elí García-Padilla, 3Jerry D
Offcial journal website: Amphibian & Reptile Conservation amphibian-reptile-conservation.org 13(2) [General Section]: 31–94 (e189). The herpetofauna of Coahuila, Mexico: composition, distribution, and conservation status 1David Lazcano, 1Manuel Nevárez-de los Reyes, 2Elí García-Padilla, 3Jerry D. Johnson, 3Vicente Mata-Silva, 3Dominic L. DeSantis, and 4,5,*Larry David Wilson 1Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Laboratorio de Herpetología, Apartado Postal 157, San Nicolás de los Garza, Nuevo León, C.P. 66450, MEXICO 2Oaxaca de Juárez, Oaxaca 68023, MEXICO 3Department of Biological Sciences, The University of Texas at El Paso, El Paso, Texas 79968-0500, USA 4Centro Zamorano de Biodiversidad, Escuela Agrícola Panamericana Zamorano, Departamento de Francisco Morazán, HONDURAS 51350 Pelican Court, Homestead, Florida 33035, USA Abstract.—The herpetofauna of Coahuila, Mexico, is comprised of 143 species, including 20 anurans, four caudates, 106 squamates, and 13 turtles. The number of species documented among the 10 physiographic regions recognized ranges from 38 in the Laguna de Mayrán to 91 in the Sierras y Llanuras Coahuilenses. The individual species occupy from one to 10 regions (x̄ = 3.5). The numbers of species that occupy individual regions range from 23 in the Sierras y Llanuras Coahuilenses to only one in each of three different regions. A Coeffcient of Biogeographic Resemblance (CBR) matrix indicates numbers of shared species among the 10 physiographic regions ranging from 20 between Llanuras de Coahuila y Nuevo León and Gran Sierra Plegada to 45 between Serranías del Burro and Sierras y Llanuras Coahuilenses. A similarity dendrogram based on the Unweighted Pair Group Method with Arithmetic Averages (UPGMA) reveals that the Llanuras de Coahuila y Nuevo León region is most dissimilar when compared to the other nine regions in Coahuila (48.0 % similarity); all nine other regions cluster together at 57.0% and the highest similarity is 92.0% between Laguna de Mayrán and Sierra de la Paila.
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