Oecomys mamorae


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Oecomys mamorae
Species Authority: (Thomas, 1906)
Common Name(s):
English Mamore Arboreal Rice Rat
Oryzomys mamorae Thomas, 1906
Taxonomic Notes: The genus needs taxonomic revision - this species could be a subspecies. Although the the genus Oecomys occurs in Argentina, the presence of O. mamorae is not confirmed; the isolated populations found in Paraguay should be reviewed.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Dunnum, J., Vargas, J., Bernal, N., Pardinas, U., Patterson, B. & Teta, P.
Reviewer(s): Amori, G. (Small Nonvolant Mammal Red List Authority) & Schipper, J. (Global Mammal Assessment Team)
Listed as Least Concern in view of its wide distribution, presumed large population, it occurs in a number of protected areas, has a tolerance of a degree of habitat modification, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category.

Geographic Range [top]

Range Description: This species is widespread through much of Bolivia, northern Paraguay, and west central Brazil (Musser and Carleton, 2005). It has an altitudinal range up 200 to 2,100 m.
Bolivia, Plurinational States of; Brazil; Paraguay
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: It is often common (Emmons and Feer, 1997).
Population Trend: Stable

Habitat and Ecology [top]

Habitat and Ecology: This mouse is arboreal, solitary and has nocturnal activity. It is found in mature and secondary rainforest, dry forest, savanna, scrub, gardens and plantations. It feeds on fruit and green seeds and uses all levels of the forest, including occasionally the ground. It is most numerous in dense viny vegetation. It nests in tree holes, in dense masses of vines or epiphytes, and among palm leaves. It often invades houses in the forest and seems particularly fond of thatched roofs (Emmons and Feer, 1997).
Systems: Terrestrial

Threats [top]

Major Threat(s): There are no major threats to this species.

Conservation Actions [top]

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

Bibliography [top]

Emmons, L.H. and Feer, F. 1997. Neotropical Rainforest Mammals: A Field Guide, Second edition. University of Chicago Press, Chicago, IL, USA.

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: Dunnum, J., Vargas, J., Bernal, N., Pardinas, U., Patterson, B. & Teta, P. 2008. Oecomys mamorae. The IUCN Red List of Threatened Species. Version 2014.3. <>. Downloaded on 31 March 2015.
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