Sigmodontomys alfari


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Sigmodontomys alfari
Species Authority: J.A. Allen, 1897
Common Name(s):
English Alfaro's Rice Water Rat, Short-tailed Sigmodontomys
Spanish Raton Arrozalero
Taxonomic Notes: Also known as Orzomys alfari.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Anderson, R.P., Tirira, D., Samudio, R. & Timm, R.
Reviewer(s): McKnight, M. (Global Mammal Assessment Team) & Amori, G. (Small Nonvolant Mammal Red List Authority)
This species is listed as Least Concern in view of its wide distribution, presumed large population, occurrence in a number of protected areas, and because it does not appear to be under threat and is unlikely to be declining at nearly the rate required to qualify for listing in a threatened category.

Geographic Range [top]

Range Description: This species is found from eastern Honduras to Panama, and from central and west Colombia to northwest Venezuela and northwest Ecuador (Musser and Carleton 2005).
Colombia; Costa Rica; Ecuador; Honduras; Nicaragua; Panama; Venezuela, Bolivarian Republic of
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: This species is locally common. However, it is generally rare north of Panama (Reid 1997) and in Venezuela it is not common (Lord 1999). In Colombia, this species is known from large surveys, but is poorly known in Venezuela where habitat is very disturbed (B. Rivas and R. P. Anderson pers. comm.).
Population Trend: Stable

Habitat and Ecology [top]

Habitat and Ecology: This rodent is poorly known. It lives in wet lowland forest, secondary forest, cane fields, marshes, or cultivated areas near water. It swims well and is probably nocturnal (Reid 1997; Lord 1999). It seldom climbs, and it feeds on seeds and vegetation.
Systems: Terrestrial

Threats [top]

Major Threat(s): There does not appear to be any major threats to this species.

Conservation Actions [top]

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

Bibliography [top]

Lord, R. 2000. Wild mammals of Venezuela. Armitano Editores, C. A., 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.

Reid, F. 1997. A field guide to the mammals of Central America and southeast Mexico. Oxford University Press, New York, USA.

Citation: Anderson, R.P., Tirira, D., Samudio, R. & Timm, R. 2008. Sigmodontomys alfari. The IUCN Red List of Threatened Species. Version 2014.3. <>. Downloaded on 01 April 2015.
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