Abrocoma shistacea 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Rodentia Abrocomidae

Scientific Name: Abrocoma shistacea Thomas, 1921
Common Name(s):
English Sierra Del Tontal Chinchilla Rat
Taxonomic Notes: Previously considered a subspecies of A. cinerea (Ellerman 1940) but was recognized as distinct by Braun and Mares (2002).

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2016
Date Assessed: 2016-03-01
Assessor(s): Roach, N.
Reviewer(s): Amori, G.
Contributor(s): Ojeda, R. & Jayat, J.
Listed as Least Concern because it occurs in protected areas, there is new information about its distribution, and it currently has no known threats.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is restricted to the pre-Andean foothills of the southern San Juan Province (Taraborelli et al. 2015). It is known from three localities in the southern San Juan Province of Argentina, all located within the Monte desert and at elevations between 1,100-2,900 m. These localities include Los Sombreros, Parque Nacional El Leoncito (Taraborelli et al. 2011, Patton and Emmons 2015), and Pedernal (Patton and Emmons 2015). Thomas (1921) restricted the distribution at Sierra Tontal in Leoncito National Park at 2,700 m and at Pedernal at 1,200 m. These two sites are separated by 51 miles (Thomas 1921; Patton and Emmons 2015).
Countries occurrence:
Additional data:
Number of Locations:3
Lower elevation limit (metres):1100
Upper elevation limit (metres):2900
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The size and distribution of this species are largely unknown. Patton and Emmons 2015 reported an average density of 0.15 individuals per ha.
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species is a rock specialist, and inhabits rock crevice formations that other species cannot. They are specially adapted for saxicolous existence (Taraborelli et al. 2011). They live in burrow systems within rocky crevices on hillsides or rocky walls (Patton and Emmons 2015). This species is a cresosotebush dietary specialist, and is found in shrub habitats dominated by Larrea nitida and L. divaricata (Taraborelli et al. 2011, Patton and Emmons 2015). Feeding is selective in relation to plant availability, with the primary food source being Larrea (Patton and Emmons 2015). Large latrine sites could suggest side fidelity and long time use of certain areas by the species (Taraborelli et al. 2011). They live in groups of 3-4, usually with one male and multiple females, and are mostly active in the morning (Patton and Emmons 2015).

Threats [top]

Major Threat(s): The direct threats to this species, if any, are unknown. Future climate change scenarios could potentially pose a threat to this species because it is a habitat specialist (Taborelli et al. 2015).

Conservation Actions [top]

Conservation Actions: This species is probably found in Leoncito National Park. Further research is needed to determine the species' range, population status, threats and ecology.

Citation: Roach, N. 2016. Abrocoma shistacea. The IUCN Red List of Threatened Species 2016: e.T136525A22182532. . Downloaded on 25 September 2018.
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