Oligoryzomys griseolus 


Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Rodentia Cricetidae

Scientific Name: Oligoryzomys griseolus
Species Authority: (Osgood, 1912)
Common Name(s):
English Grayish 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): Gómez-Laverde, M. & Weksler, M.
Reviewer(s): Amori, G. (Small Nonvolant Mammal Red List Authority) & Schipper, J. (Global Mammal Assessment Team)
This species is listed as Least Concern in view of its wide distribution, presumed large population, it occurs 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 Táchira, Andes of extreme west Venezuela, and Cordillera Oriental of east Colombia (Musser and Carleton, 2005).
Countries occurrence:
Colombia; Venezuela, Bolivarian Republic of
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: It is locally common (M. Gómez-Laverde pers. comm.).
Current Population Trend: Decreasing
Additional data:
Population severely fragmented: No

Habitat and Ecology [top]

Habitat and Ecology: This species is terrestrial and occurs in high montane forest and paramo (Linares 1998).
Systems: Terrestrial

Threats [top]

Major Threat(s): There does not appear to be any major threats to this species; however, deforestation and habitat loss affect its area of occupancy.

Conservation Actions [top]

Conservation Actions: It occurs in several protected areas. No conservation measures are needed for this species.

Classifications [top]

1. Forest -> 1.9. Forest - Subtropical/Tropical Moist Montane
suitability: Suitable  
4. Grassland -> 4.7. Grassland - Subtropical/Tropical High Altitude
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]

Linares, O.J. 1998. Mamíferos de Venezuela. Sociedad Conservacionista Audubon de Venezuela, Caracas, Venezuela.

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: Gómez-Laverde, M. & Weksler, M. 2008. Oligoryzomys griseolus. The IUCN Red List of Threatened Species 2008: e.T15249A4505047. . Downloaded on 27 November 2015.
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