Ctenomys rionegrensis 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Rodentia Ctenomyidae

Scientific Name: Ctenomys rionegrensis Langguth & Abella, 1970
Taxonomic Source(s): Bidau, C.J. 2015. Family Ctenomyidae Lesson, 1842. In: Patton, J.L., Pardiñas, U.F.J. and D’Elía, G. (eds), Mammals of South America, pp. 818-877. The University of Chicago Press.

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(i,ii,iii,iv)+2ab(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 Endangered because its extent of occurrence is less than 5,000 km², its area of occupancy is less than 500 km², its distribution is severely fragmented, there are only four populations and there is continuing decline in the extent and quality of its habitat. It may be locally abundant if habitat is available but habitat is being quickly destroyed

Geographic Range [top]

Range Description:This species occurs in the Entre Rios Province of Argentina in three isolated populations. It can also be found in a small areas (50 X 60 km) in the Department of Rio Negro, Uruguay (Wlasiuk et al., 2003). It is restricted to sand dunes which make up <10% of the area the species range.
Countries occurrence:
Argentina; Uruguay
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:It is found in four disjunct populations. It may be locally abundant (Lessa pers. comm.) occurring at densities of 30-80 individuals per hectare where they are considered abundant (Lessa pers. comm.).
Current Population Trend:Decreasing
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:It is restricted to sand dunes (Lessa pers. comm.).

Threats [top]

Major Threat(s): These sand dunes have been priorities for expansion of pine plantation and Eucalyptus. Many populations were extirpated due to this reason (Lessa pers. comm.).

Conservation Actions [top]

Conservation Actions: There is no information available about any conservation measures being made to protect this species. Further research is necessary to clarify the true status of this species.

Citation: Bidau, C., Lessa, E. & Ojeda, R. 2008. Ctenomys rionegrensis. The IUCN Red List of Threatened Species 2008: e.T136635A4320816. . Downloaded on 18 June 2018.
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