Octodon pacificus 

Scope: Global

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Rodentia Octodontidae

Scientific Name: Octodon pacificus
Species Authority: R. Hutterer, 1994
Taxonomic Notes: The species needs taxonomic revision (O. Lessa pers. comm.)

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B1ab(i,ii,iii)+2ab(i,ii,iii) ver 3.1
Year Published: 2016
Date Assessed: 2016-03-01
Assessor(s): Roach, N.
Reviewer(s): Amori, G.
Contributor(s): Ojeda, R. & Bidau, C.
Listed as Critically Endangered because its extent of occurrence is less than 100 km² and its area of occupancy is presumed to be less than 10 km², its distribution is severely fragmented, and there is continuing decline in the extent and quality of its habitat.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species occurs on Mocha Island off the coast of central Chile in Arauca province (Verzi et al. 2015). Although a recently described species, the first collection of it was made in 1959 (Saavedra et al. 2003). Found near edge of Valdivian rainforest, which is now limited to the highest elevation of the island (Verzi et al. 2015)
Countries occurrence:
Additional data:
Continuing decline in area of occupancy (AOO):Yes
Estimated extent of occurrence (EOO) - km2:61
Continuing decline in extent of occurrence (EOO):Yes
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This species has not be trapped since Hutterer (1994) despite several attempts (Saavedra et al. 2003). It is thought that the population is now extremely small.
Current Population Trend:Decreasing
Additional data:
Population severely fragmented:Yes

Habitat and Ecology [top]

Habitat and Ecology:The island supports dense vegetation that is biogeographically related to mainland Valadivian forest. It occupies only a few square kilometres of forest habitat (Saavedra et al. 2003).
Continuing decline in area, extent and/or quality of habitat:Yes

Threats [top]

Major Threat(s): The islanders rely heavily on the vegetation for their subsistence which has led to significant degradation of the natural habitats. Human activity has resulted in the almost total deforestation of lowlands which are now dominated by grasslands. The Valdivian forest is now restricted to the highest elevations and subject to logging (Saavedra et al. 2003).

Conservation Actions [top]

Conservation Actions: Research is needed to further trapping efforts which should be directed to mountain tops.

Citation: Roach, N. 2016. Octodon pacificus. The IUCN Red List of Threatened Species 2016: e.T15090A78321512. . Downloaded on 23 October 2016.
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