Ctenomys osvaldoreigi


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Ctenomys osvaldoreigi
Species Authority: Contreras, 1995

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B1ab(i,ii,iii,iv) ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Bidau, C., Lessa, E. & Ojeda, R.
Reviewer(s): Amori, G. (Small Nonvolant Mammal Red List Authority) & Schipper, J. (Global Mammal Assessment Team)
Listed as Critically Endangered because its extent of occurrence is less than 100 km², its is known only from a single location and there is continuing decline in the extent and quality of its habitat. A fire severely impacted the population in 2006, which has been followed by the expansion of sheep herding which is further decimating remaining small populations.

Geographic Range [top]

Range Description: This species is known only from the type locality at Estancia San Luis, Cordoba Province, above 2,000 m asl in the Sierras Grandes, Argentina (Woods and Kilpatrick, 2005).
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: This species is known only from one very small population (Bidau pers. comm.).
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: C. osvaldoreigi occurs in highland grasslands.
Systems: Terrestrial

Threats [top]

Major Threat(s): Severe fires struck population recently in 2006. Grazing also impacts population (Ojeda, Bidau and Lessa pers. comm.).

Conservation Actions [top]

Conservation Actions: It does not occur in any protected areas but it is listed as Endangered in red list of Argentina.

Citation: Bidau, C., Lessa, E. & Ojeda, R. 2008. Ctenomys osvaldoreigi. The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 03 September 2015.
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