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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Colubridaewith comments on distribution and conservation. From the coarsest spatial scale maps for both amphibians and reptiles, it is possible to observe a clear latitudinal pattern of species richness Fig.

Generalist species those that use more than one habitat type are the least at risk 2 of 25 species. Published online Feb Hylidaein the Caribbean foothills of southeastern Costa Rica. Patterns of species richness and endemism of the amphibians and reptiles of Mexico have been studied by various researchers and a basic understanding of these patterns is beginning to emerge.

The average of the local r 2 and the standard deviations from the GWR are reported to represent the general pattern. Our goal is to place this checklist into a regional and conservation context not available in previously published checklists.

Mountain formations probably acted as a filter for most Mexican herpetofauna, so that Mexico served as a barrier to invading species from the north and south, and only 23 species extend from the USA, through Mexico, and into Central America Flores-Villela, SmithaLemos-Espinal et al.

Van Devender and Van Devender Also Conant and Collins projected the range of the Texas Alligator Lizard Gerrhonotus infernalis to include the southern part of the Big Bend region of Texas, southward through eastern Chihuahua, most of Coahuila and other states to the south.


SmithHidalgo: Another 32 are distributed in the United States and Mexico, most of them are species characteristic of the Chihuahua Desert or woodlands of the Sierra Madre Occidental Elgaria kingiiGerrhonotus infernalisCrotaphytus collarisGambelia wislizeniiColeonyx brevisCophosaurus texanusHolbrookia elegansHolbrookia maculataPhrynosoma cornutumPhrynosoma modestumSceloporus bimaculosusSceloporus clarkiiSceloporus consobrinusSceloporus cowlesiSceloporus jarroviiSceloporus merriamiSceloporus poinsettiiSceloporus sleviniSceloporus virgatusUrosaurus ornatusUta stansburianaPlestiodon callicephalusPlestiodon multivirgatusPlestiodon obsoletusPlestiodon tetragrammusAspidoscelis exsanguisAspidoscelis gularisAspidoscelis inornataAspidoscelis marmorataAspidoscelis sonoraeAspidoscelis tesselataand Aspidoscelis uniparens.

The chronological distribution of these publications is the following: The number of publications has increased to Author information Article notes Copyright and License information Disclaimer. The diversity of amphibians and reptiles is higher at tropical latitudes IUCN, University of New Mexico Press, Albuquerque, pp.

Imantodes tenuissimusLampropeltis triangulumand Stenorrhina freminvillii. Six more species occur from central or southern United States to northern Terrapene ornata [Fig.

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Richness and endemism analyses are based on these models. These results reinforce the outcomes of previous studies with these and other groups, where there is a latitudinal gradient of species richness i. We are also grateful to R. Its habitat suggests that it might occur in some of the deep canyons of southwestern Hrrpetofauna. The remaining seven endemic species are distributed mainly along the Pacific Coast of Mexico Anolis nebulosusCtenosaura macrolophaSceloporus chiaapasSceloporus nelsoniUrosaurus bicarinatusPlestiodon parviauriculatusand Aspidoscelis costata.

One species is found in SON. We obtained records useful for analysis. Here, we report the list of amphibians and reptiles that have been recorded so far for the state of Chihuahua. Among these states Chihuahua has received a great deal of attention in the study of herpeofauna herpetofauna.

University of California Press, Berkeley, pp https: Three more species are widely distributed from southern Canada to northern Mexico Ambystoma mavortiumAnaxyrus cognatusand Spea bombifrons.

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

List of collections and number of records representing the database used to generate the species distribution models and the potential distribution ranges used for the analyses. Close mobile search navigation Article navigation. 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 tarahumaraeLithobates yavapaiensisScaphiopus couchiiand Spea multiplicata.


View large Download slide. However, the use of prediction models to approximate ranges helps to reduce biases that may exist in the absence of samples or collections. In the former, rich areas remain when decreasing the grid size, whereas, in the latter, rich areas are diluted with decreasing grid size.

Although there is a widespread feeling among researchers advocating that explanations associated with processes that generate patterns of distribution and therefore richness are general to a certain degree, there is evidence which supports the possibility that there may be more than one mechanism involved in the generation of these patterns Gaston et al.

In addition, considering patterns at different scales of values one for each spatial chiapsaalpha areas may be distinguished, in which local richness is very important, and beta areas, in which replacement contributes more to regional richness see Supporting Information Figs S1, S2. Six more species are found from central or southern United States to Central or South America Drymarchon melanurusDrymobius margaritiferusOxybelis aeneusSenticolis triaspisThamnophis cyrtopsis herpetotauna, and Thamnophis marcianus.

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

Smithawe expand on these earlier efforts by also collecting and summarizing the conservation statuses for each documented species.

At an even finer scale of 0. Conant R, Collins JT. The Gila Monster Heloderma suspectum is also expected to occur in this part of the state.

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