Gymnuromys roberti 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Rodentia Nesomyidae

Scientific Name: Gymnuromys roberti Major, 1896
Taxonomic Notes: Will be transferred to family Nesomyidae.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2016
Date Assessed: 2016-05-10
Assessor(s): Kennerley, R.
Reviewer(s): Amori, G.
Contributor(s): Goodman, S., Raherisehena, M. & Ramiarinjanahary, H.
Listed as Least Concern in view of its wide distribution, presumed large population even though it is poorly known, occurrence in a number of protected areas, and because it is unlikely to be declining fast enough to qualify for listing in a threatened category. However it is important that further research is done to fully understand population levels and to monitor changes in availability of suitable habitat.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is endemic to eastern Madagascar where it ranges from the northern highlands south to the southern limits of the Anosyennes Mountains. It has a wide elevational range and has been recorded from around 500 to 1,800 m asl (Carleton and Goodman 2003).
Countries occurrence:
Additional data:
Lower elevation limit (metres):500
Upper elevation limit (metres):1800
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:On the basis of standard trapping techniques, this species is never common (S.M. Goodman and D. Rakotondravony pers. comm.).
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This is a nocturnal, terrestrial species found in lowland and montane tropical moist forest. It generally occurs in areas with sparse understory vegetation. Animals may be found in ground burrows, up to a meter deep, located under fallen logs and other ground cover. The biology of this species is not well known. This species appears to be able to tolerate some habitat modification, as individuals have been captured in intact secondary forest mixed with introduced tree species (Carleton and Goodman 2003).
Generation Length (years):1-2

Threats [top]

Major Threat(s): This species is threatened by habitat loss through clearance for cultivation and fire. It may be suffering increased competition from the introduced Black Rat (Rattus rattus). There is good evidence that all Nesomyinae species (especially those found over 800 m) are susceptible to 100% mortality from plague from introduced rodents - these seem to be localized events.

Conservation Actions [top]

Conservation Actions: It has been recorded from several protected areas including Analamazaotra and Anjanaharibe-Sud Special Reserves, and Mantadia, Marojejy, Ranomafana, and Andringitra National Parks. As with other predominantly forest living rodents on Madagascar, suitable tracts of pristine habitat should be conserved. Further studies are needed into the distribution and natural history of this species.

Citation: Kennerley, R. 2016. Gymnuromys roberti. The IUCN Red List of Threatened Species 2016: e.T9581A22237297. . Downloaded on 26 September 2018.
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