Srilankamys ohiensis


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Srilankamys ohiensis
Species Authority: (Phillips, 1929)
Common Name(s):
English Ohiya Rat
Rattus ohiensis Phillips, 1929

Assessment Information [top]

Red List Category & Criteria: Vulnerable B1ab(iii)+2ab(iii) ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): de A. Goonatilake, W.I.L.D.P.T.S., Nameer, P.O. & Molur, S.
Reviewer(s): Amori, G. (Small Nonvolant Mammal Red List Authority) & Cox, N. (Global Mammal Assessment Team)
Listed as Vulnerable because its extent of occurrence is estimated to be less than 10,000 km², while the area of occupancy is estimated at 600 km². based on survey data and available habitats (Molur et al. 2005). It is found in a few severely fragmented locations and is facing a continuing decline in its habitat quality.

Geographic Range [top]

Range Description: This species is endemic to the central highlands of Sri Lanka, known from a few fragmented locations in Central Province, Sabaragamuwa Province and Uva Province at elevations ranging from 915 to 2,310 m asl (Molur et al. 2005; Musser and Carleton 2005).
Sri Lanka
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: There is no information available on the population abundance of this species (Molur et al. 2005).
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: It is a nocturnal and fossorial species. It occurs in lowland and montane evergreen forests (Molur et al. 2005).
Systems: Terrestrial

Threats [top]

Major Threat(s): Habitat loss and degradation due to expansion of agriculture, clear-cutting, forest fire in Horton Plains, undergrowth clearing in Knuckles Range, and predation by domestic carnivores have been observed to be the major threats for this species (Molur et al. 2005, W.I.L.D.P.T.S. de A. Goonatilake in litt. 2005).

Conservation Actions [top]

Conservation Actions: The species is not protected by any legislation. It is known from Horton Plains National Park, Knuckles Range Forest Reserve in Central Province; Delwala Forest Reserve and Sinharaja Forest Reserve in Sabaragamuwa Province. Survey, life history studies and monitoring are recommended for this species (Molur et al. 2005).

Bibliography [top]

Molur, S., Srinivasulu, C., Srinivasulu, B., Walker, S., Nameer, P. O. and Ravikumar, L. 2005. Status of non-volant small mammals: Conservation Assessment and Management Plan (C.A.M.P) workshop report. Zoo Outreach Organisation / CBSG-South Asia., Comibatore, India.

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.

Phillips, W. W. A. 1980. Manual of the Mammals of Sri Lanka. Part 1. Wildlife and Nature Protection Society of Sri Lanka.

Citation: de A. Goonatilake, W.I.L.D.P.T.S., Nameer, P.O. & Molur, S. 2008. Srilankamys ohiensis. The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 30 August 2015.
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