Pleurodema somuncurensis


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Pleurodema somuncurensis
Species Authority: (Cei, 1969)
Common Name(s):
English El Rincon Stream Frog
Spanish Rana de Somuncura
Somuncuria somuncurensis (Cei, 1969)
Telmatobius somuncurensis Cei, 1969

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B2ab(iii,iv) ver 3.1
Year Published: 2004
Date Assessed: 2004-04-30
Assessor(s): Carmen Úbeda, Esteban Lavilla
Reviewer(s): Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson, Neil Cox and Bruce Young)
Listed as Critically Endangered because its Area Of Occupancy is less than 10km2, its distribution is severely fragmented, there is continuing decline in the extent and quality of its aquatic habitat, and a decline in the number of subpopulations, on the Somuncura Plateau, Argentina.
1996 Endangered (Baillie and Groombridge 1996)
1996 Endangered
1994 Vulnerable (Groombridge 1994)
1990 Indeterminate (IUCN 1990)
1988 Indeterminate (IUCN Conservation Monitoring Centre 1988)

Geographic Range [top]

Range Description: This species is known only from the Somuncura Plateau, an isolated basaltic plateau in the Río Negro Province, Argentinean Patagonia. It has an altitudinal range of 500-700m asl.
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: It is generally quite rare, and thought to be declining.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: It is wholly aquatic, inhabiting and breeding in permanent thermal springs and streams originating in the northern slopes of Somuncura Plateau. It is not present in modified habitats.
Systems: Freshwater

Threats [top]

Major Threat(s): The species is probably threatened by introduced predatory fish (Oncorhynchus mykiss), and by the canalization of spring water towards local towns and villages for domestic use. In addition, the impacts of livestock farming (sheep and goats) result in overgrazing, as well as chemical pollution of waterways from sheep baths.

Conservation Actions [top]

Conservation Actions: The range of the species is within the Reserva Provincial Somuncura, but the reserve currently is poorly managed, and there is little real protection for the species. Strengthening the management of such existing protected areas is necessary, and further field research is needed to determine the current population status of the species.

Citation: Carmen Úbeda, Esteban Lavilla 2004. Pleurodema somuncurensis. The IUCN Red List of Threatened Species. Version 2014.2. <>. Downloaded on 23 August 2014.
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