|Scientific Name:||Ctenosaura oaxacana|
|Species Authority:||Köhler & Hasbún, 2001|
|Taxonomic Notes:||Synonyms = Ctenosaura quinquecarinata (in part) sensu Bailey, 1928 and other authors before 2001; Enyaliosaurus quinquecarinatus (in part).|
|Red List Category & Criteria:||Critically Endangered B1ab(iii,v) ver 3.1|
|Reviewer(s):||Hudson, R. & Alberts, A. (Iguana Red List Authority)|
Ctenosaura oaxacana is restricted to Oaxaca, Mexico. Both extent of occurrence and area of occupancy are less than 100 km² (CR B1). Total population size is not known, but it is thought that there may be fewer than 2,500 mature individuals. The population is severely fragmented: probably 6–10 isolated subpopulations (CR B1a) and it is estimated that there has been a decrease in quality and area of habitat (by at least 20%) over the last 50 years as a result of deforestation and regular burning of habitat (B1b(iii)). The population is also threatened by local hunting for the animal’s meat (CR B1b(v)). The population is expected to decline by at least 30% over the next ten years if current rates of habitat loss continue.
|Range Description:||Ctenosaura oaxacana is restricted to the Pacific versant of the Isthmus of Tehauntepec in the Mexican state of Oaxaca. Extent of occurrence is less than 100 km².|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||Total population size is not known, but perhaps is less than 2,500 mature individuals. The population is fragmented into 6–10 isolated subpopulations.|
|Current Population Trend:||Decreasing|
|Habitat and Ecology:||Tropical dry forest (Holdridge 1967) from 0–250 m asl. The species semi-arboreal, preferring rocky terrain and using hollow branches and rocks as retreats.|
|Major Threat(s):||Habitat is decreasing in area and quality as a result of deforestation and regular burning of habitat. The species is also harvested locally for its meat.|
All wildlife is protected under Mexican national law. this species is not known to occur within any protected areas.
Conservation actions recommended include further surveys for the species, research into genetics and life history, management and monitoring of the wild population and its habitat.
Bailey, J.W. 1928. A revision of the lizards of the genus Ctenosaura. Proceedings of the U.S. National Museum, Washington D.C. 73(12): 1-55.
Hasbun, C.R. and Köhler, G. 2001. On the identity of the holotype of Ctenosaura quinquecarinata (Gray, 1842). Senckennergiana Biologica 81: 247-255.
Holdridge, L.R. 1967. Life zone ecology. Revised edition. Tropical Science Centre, San José, Costa Rica.
IUCN. 2004. 2004 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 23 November 2004.
Köhler, G. 1995. Freilanduntersuchungen zur Morphologie und Lebensweise des Fünfkiel-Schwartzleguans Ctenosaura quinquecarinata am Isthmus von Tehuantepec, Mexico. Herpetofauna, Weinstadt. 17(97): 21-26.
Köhler, G. and Hasbun, C.R. 2001. A new species of spiny-tailed iguana from Mexico formerly referred to Ctenosaura quinquecarinata (Gray, 1842) (Reptilia, Squamata, Iguanidae). Senckenbergiana Biologica 81: 257-267.
|Citation:||Köhler, G. 2004. Ctenosaura oaxacana. The IUCN Red List of Threatened Species 2004: e.T44190A10859692. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T44190A10859692.en . Downloaded on 04 October 2015.|
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