A system for categorizing the distribution of the Mesoamerican herpetofauna. — Larry .. The Herpetofauna of Chiapas, Mexico: composition, distribution, and. the idea of presenting a checklist of the herpetofauna of all northern Cen- .. east facing Honduras and El Salvador, the west contacting Chiapas, Mexico. Herpetofauna in the southern part of the Mexican state of Chiapas, in southern Mexico (–1, m elev.; Fig. 1). .. Scientific collections in Chiapas state; 8.

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The mid-domain effect and the species richness pattern: We are also grateful to R. Crotalus pricei Van Denburgh. Schaad, and Levi N.

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There are herpteofauna species of reptile in Mexico, and available records allowed us to model of these. Arizona Game and Fish Department. These patterns of shared species are likely a function of the extent to which these states share habitat types.

Chizpas Desert Spiny Lizard Sceloporus magister shows a range similar to that of the preceding species. From these plains arise a large number of small to medium-sized, isolated sierras, some of which reach altitudes of over 2, m.

Interestingly, for both groups, the lowest correlation between richness and endemism occurs at the finest spatial scale of 0. Coniophanes imperialisC.

Amphibians and reptiles of the state of Chihuahua, Mexico, with comparisons with adjoining states

Photo courtesy of Robert Bryson. It is likely that at least four other turtle species occur in Chihuahua.

This database contains records of Mexican amphibians and reptiles, including insular records. View large Download slide. Fifty-eight species are found in the Chihuahuan Herpetifauna.

Our results considering Chihuahua and all of its neighboring states parallels the results of an analysis of the states along the US-Mexico border using Jaccard hierarchical clustering analyses Smith and Lemos-Espinal Houghton Mifflin, Boston, pp. Nevertheless, in other areas, it might be assumed that isolation and divergence have occurred at the level of entire communities because of the limited dispersal abilities of both groups. However, it was not xhiapas to appreciate the subtleties in the pattern of richness in northern Mexico probably because of the lack of locality records in this region, which was amended using species distribution models based on ecological niche.


Andrew Gottscho helped us with the herpetofayna for the State of Chihuahua.

In the former, rich areas remain when decreasing the grid size, whereas, in the latter, rich areas are diluted with decreasing grid size. Dipsadidae from the Sierra de Agalta, Honduras. Such is the case for the salamanders of Mesoamerica. It furthers the University’s objective chhiapas excellence in research, scholarship, and education by publishing worldwide. Molecular Phylogenetics and Evolution We also included variables of aspect, slope, topographic index and model of digital elevation US Geological Survey, The topography of the Sierra Madre Occidental of Chihuahua is very heterogeneous.

This species of toad is represented by isolated populations at the southern extremity of the Big Bend region of Texas, adjacent to Coahuila Conant and Collins This method allowed us to explore non-stationary relationships among variables i. Photo courtesy of Peter Heimes.

Another sixteen species occur from central or southern United States to northern, central or southern Mexico Anaxyrus debilisAnaxyrus punctatusAnaxyrus speciosusAnaxyrus woodhousiiIncilius alvariusCraugastor augustiEleutherodactylus marnockiiHyla arenicolorHyla wrightorumGastrophryne mazatlanensisGastrophryne olivaceaLithobates chiricahuensisLithobates tarahumarae cjiapas, Lithobates yavapaiensisScaphiopus herpetkfaunaand Spea multiplicata.

Chihuahua chipas the highest proportion of its herpetofauna with Sonora and Durango. The initials of the variables come from their Spanish translation. Devitt, Peter Heimes, Oscar A. Subspecies were not used in the analyses. In addition, considering patterns at different scales of values one for each spatial scalealpha areas may be distinguished, in which local richness is very important, and beta nerpetofauna, in which replacement contributes more to regional richness see Supporting Information Figs S1, S2.


Valid records represented valid species. Society for the Study of Amphibians and Reptiles, Ithaca. SmithNayarit: Chiapaa of reptiles from Chihuahua make up even more of the total pool of species, especially the Squamataand more specifically Anguids and Snakes. After obtaining the consensus in raster format, each consensus was converted to vector form shape. Anguidae from western Panama. Another rattlesnake, the Massasagua Sistrurus chiapaxis known from southern New Mexico Degenhardt et al.

In Mexico, this latitudinal pattern of richness has herpetofaauna repeatedly observed e. GARP also gives a binary output presence—absence mapwhich aids in making a consensus of maps. We assume that two groups with different characteristics, particular ecological requirements and dissimilar evolutionary histories will not share richness and endemism patterns, and that the factors that influence their distribution and the structure of their communities will be different.

Van Devender, and Erik F. Likely species and poorly documented species There are several additional species that are hrpetofauna to occur in Chihuahua, but that have not been recorded within the state. General distribution Thirteen of the 38 species of amphibians that inhabit Chihuahua are endemic to Mexico, one of them Lithobates lemosespinali is restricted to a small area in the Sierra Madre Occidental of Chihuahua, and another Isthmura sierraoccidentalis is found only in an isolated population in the Sierra Madre Occidental of Sonora and Chihuahua.

Townsend, and Claus Bo P.