Oligoryzomys chacoensis 


Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Rodentia Cricetidae

Scientific Name: Oligoryzomys chacoensis
Species Authority: (Myers & Carleton, 1981)
Common Name(s):
English Chacoan Pygmy Rice Rat

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Weksler, M., Bonvicino, C., Pardinas, U., Teta, P., Jayat, J.P. & D'Elia, G.
Reviewer(s): Amori, G. (Small Nonvolant Mammal Red List Authority) & Schipper, J. (Global Mammal Assessment Team)
This species is listed as Least Concern in because of its wide distribution, presumed large population, occurrence in a number of protected areas, and because it is unlikely to be declining at nearly the rate required to qualify for listing in a threatened category.
Previously published Red List assessments:
1996 Lower Risk/least concern (LR/lc)

Geographic Range [top]

Range Description: This species occurs in dryer habitats of southeast Bolivia, west Paraguay, southwest Brazil, and north Argentina (Musser and Carleton, 2005).
Countries occurrence:
Argentina; Bolivia, Plurinational States of; Brazil; Paraguay
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: It is a common species.
Current Population Trend: Stable
Additional data:
Population severely fragmented: No

Habitat and Ecology [top]

Habitat and Ecology: This species occurs in Chaco and Cerrado close to aquatic habitats (Weksler pers. comm.).
Systems: Terrestrial

Threats [top]

Major Threat(s): There are no major threats in Brazil.

Conservation Actions [top]

Conservation Actions: This species probably occurs in several protected areas in Paraguay.

Classifications [top]

3. Shrubland -> 3.5. Shrubland - Subtropical/Tropical Dry
suitability: Suitable  
3. Shrubland -> 3.6. Shrubland - Subtropical/Tropical Moist
suitability: Suitable  
4. Grassland -> 4.5. Grassland - Subtropical/Tropical Dry
suitability: Suitable  

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
  Occur in at least one PA:Yes
In-Place Species Management
In-Place Education

Bibliography [top]

Musser, G. G. and Carleton, M. D. 2005. Superfamily Muroidea. In: D. E. Wilson and D. A. Reeder (eds), Mammal Species of the World: a geographic and taxonomic reference, pp. 894-1531. The John Hopkins University Press, Baltimore, USA.

Citation: Weksler, M., Bonvicino, C., Pardinas, U., Teta, P., Jayat, J.P. & D'Elia, G. 2008. Oligoryzomys chacoensis. The IUCN Red List of Threatened Species 2008: e.T15243A4503869. . Downloaded on 25 November 2015.
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