Taxonomy

Animalia Chordata Vertebrata Amphibia Anura Bufonidae Anaxyrus Anaxyrus cognatus

Taxonomic notes: Section empty

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Geographic Range

This species is known from the Great Plains and southwestern USA and northern Mexico (Sonora, Chihuahua, Coahuila, Sinaloa, Tamaulipas and Nuevo León; Frost-Darrel, 2014). Southern Manitoba to southeastern Alberta, south to Aguascalientes and San Luis Potosí, Mexico; east to western Minnesota, western Iowa, central Missouri, central Oklahoma, and northern and western Texas; west to central Montana, eastern Wyoming, eastern and south-central Colorado, southeastern California, then north through southern Nevada and Arizona to northern Utah and south to Sonora and northerns and central Sinaloa (see map in Krupa, 1990). It is commonly found up to 1,800m asl, and up to 2,440m asl in Colorado.

Comments

La información sobre la distribución de esta especies se puede solicitar al director del CIIDIR-IPN-DURANGO, Dr. José Antonio Ávila Reyes (jaavila@ipn.mx), para que la envié al Laboratorio de Fauna Silvestre para dar seguimiento, debido a que no estoy autorizado en dar datos por estar Jubilado del IPN, los datos son del estado de Durango

Posted by ambystoma5dgo about 10 years ago
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Habitat

This species inhabits deserts, grasslands, semi-desert shrublands, open floodplains, and agricultural areas, typically in stream valleys. It burrows underground when inactive. It breeds in rain pools, flooded areas, and ponds and reservoirs that fluctuate in size. Eggs and larvae develop in shallow water (usually clear).

Comments

Es una especie que habita ambientes de desierto y bosque xerófilo micrófilo, y rosetófilo. Los tipos de microhábitats que prefiere la especie son los tanque que se encuentran a las orillas de los cuerpos de agua, que son los sitios que usa para reproducirse.

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Population

Its population is widespread. The population trend is unknown but is probably stable to slightly declining. Each female can produce between 120 to 2200 eggs (Ramírez y Santos, pers. comm, 2014).

Comments

Los tamaños de las poblaciones de la especie son pequeñas, se reproduce en la época de lluvias, en cuerpos de agua temporales; su periodo reproductivo es estacional. Cada hembra puede poner de 120 a 2200 huevos.

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Use Trade

This species is offered online at about $13 USD in USA websites.

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Threats

This species is not threatened overall. It uses some cultivated areas successfully, but extensive-intensive farming eliminates or reduces local populations. Breeding sites are typically the result of heavy rains and hence not generally subject to loss via water projects. In fact, this toad often breeds in reservoir edges. Suburban sprawl has eliminated breeding and non-breeding habitats in areas adjacent to growing cities in Colorado (Hammerson, 1999). In Mexico it can be threatened by land use change to urbanization areas (Santos, pers. comm., 2014).

Comments

Es una especie que no se encuentra listada en ninguna categoría de riesgo por la NOM059-ECOL-2010. Sin embargo, por el uso de suelo donde ocurre su distribución, es necesario cuidar el ambiente donde se reproduce.

Posted by ramaure about 10 years ago

A pesar de que el libro Rojo esta la especie como de menor preocupación, es necesario cuidar los sitios donde la especie se reproduce, en toda su área de distribución.

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Specific Threats

  • 4.1 Roads & railroads
  • 2.1.4 Scale Unknown/Unrecorded
  • 1.2 Commercial & industrial areas
  • 1.1 Housing & urban areas

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Conservation Actions

The range of this species includes several protected areas in USA and Mexico. Better information on abundance, trends, and threats is needed.

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Specific Actions

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    Red List Rationale

    Listed as Least Concern in view of its wide distribution, tolerance of a broad range of habitats, presumed large population, and because it is unlikely to be declining to qualify for listing in a more threatened category.

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    Bibliography

    • Blackburn, L., Nanjappa, P. and Lannoo, M.J. 2001. An Atlas of the Distribution of U.S. Amphibians. Ball State University, Muncie, IN, USA.
    • Collins, J.T. 1982. Amphibians and reptiles in Kansas. Second Edition. Univ. Kansas Mus. Nat. Hist., Pub. Ed. Ser. 8, Kansas.
    • Conant, R. and Collins, J.T. 1991. A Field Guide to Reptiles and Amphibians: Eastern and Central North America. Third Edition. Houghton Mifflin Company, Boston, Massachusetts.
    • Frost, D.R. 1985. Amphibian Species of the World: A Taxonomic and Geographic Reference. Allen Press and the Association of Systematic Collections, Lawrence, Kansas.
    • Hammerson, G.A. 1999. Amphibians and reptiles in Colorado. Second edition. University Press of Colorado, Boulder.
    • Johnson, T.R. 1977. The Amphibians of Missouri. Univ. Kansas Mus. Nat. Hist., Pub. Ed. Ser. 6, Kansas.
    • Krupa, J.J. 1990. Bufo cognatus. Catalogue of American Amphibians and Reptiles: 1-2.
    • McDiarmid, R.W., Copp, J.F. and Breedlove, D.E. 1976. Notes on the Herpetofauna of Western México: New Records from Sinaloa and the Tres Marías Islands. Contributions in Science Natural History Museum of Los Angeles County 275: 1-17.
    • Serrano Serrano, J.M. 2006. Análisis espacial de la distribución de los anfibios en Sinaloa, México. Departamento El Hombre y su Ambiente, Universidad Autónoma Metropolitana.
    • Species at Risk Branch. 2002. Species at Risk Range Maps. Canadian Wildlife Service, Environment Canada. (http://www.sis.ec.gc.ca/download_e.htm), Ottawa.
    • Stebbins, R.C. 1985. A Field Guide to the Reptiles and Amphibians of Eastern North America. Houghton Mifflin Company, Boston, Massachusetts.

    Comments

    Valdez-Lares, R. G. A. Martín-Muñoz de Cote, R. Muñiz-Martínez y G. Santos-Barrera.2013. New distributional records for Amphibians from Durango, Mexico. Herpetological Review 44(4): 646-649

    Posted by ambystoma5dgo about 10 years ago
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