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Heteromys oasicus

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA MAMMALIA RODENTIA HETEROMYIDAE

Scientific Name: Heteromys oasicus
Species Authority: Anderson, 2003

Assessment Information [top]

Red List Category & Criteria: Endangered B2ab(ii,iii,iv) ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Anderson, R.P. & Ochoa., J.
Reviewer(s): Amori, G. (Small Nonvolant Mammal Red List Authority) & Schipper, J. (Global Mammal Assessment Team)
Justification:
This species is listed as Endangered as its area of occupancy is less than 25 km², it is known from only two locations, and there is a continuous decline in quality of habitat due to grazing.

Geographic Range [top]

Range Description: This species is known only from Cerro Santa Ana (550 m asl) and the Fila de Monte Cano on the Peninsula de Paraguana, Estado Falcon, Venezuela (Anderson, 2003). The two known populations are isolated from each other (Anderson, 2003). Its distribution encompasses a 22-25 km² area (the approximate area above 200 m associated with Cerro Santa Ana and Monte Cano); however, it is likely that the area with viable populations is much smaller (Anderson, 2003).
Countries:
Native:
Venezuela, Bolivarian Republic of
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: It is rare, and known from two localities (Anderson, 2003).
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: Most specimens of Heteromys oasicus derive from cloud forest and mesic vegetation types on Cerro Santa Ana. All specimens known from Monte Cano were captured among terrestrial bromeliads in the bed of a seasonal stream, which was dry at the time. It likely is restricted to small areas of evergreen and semideciduous vegetation, and to be associated with small streams (Anderson, 2003).
Systems: Terrestrial

Threats [top]

Major Threat(s): The greatest threat to the species habitat on Cerro Santa Ana and Monte Cano is grazing by domestic goats, which defoliate native vegetation on the slopes, causing an increase in erosion. Also on Monte Cano, there is small-scale gathering of wood and ornamental plants, the construction of infrastructure for tourism is planned, and small-scale mining projects are forthcoming (Anderson, 2003).

Conservation Actions [top]

Conservation Actions: The small distribution area that this species occurs in is protected as the Monumento Natural Cerro de Santa Ana and the Reserva Biologica Monte Cano, its habitat on Monte Cano is protected in a nongovernmental biological reserve managed by INFALCOSTA, a partnership between the Universidad Nacional Experimental Francisco de Miranda (in Coro) and local communities (Anderson, 2003).

Citation: Anderson, R.P. & Ochoa., J. 2008. Heteromys oasicus. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 31 July 2014.
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