Otomys lacustris


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Otomys lacustris
Species Authority: G.M. Allen & Loveridge, 1933
Common Name(s):
English Tanzanian Vlei Rat
Taxonomic Notes: This species was previously a synonym of Otomys anchietae. It was found to be distinct by Taylor and Kumurai (2001).

Assessment Information [top]

Red List Category & Criteria: Vulnerable B1ab(iii) ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Taylor, P.J. & Maree, 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 less than 20,000 km², its distribution is severely fragmented, and there is continuing decline in the extent and quality of its habitat due to fires and overgrazing.
2004 Near Threatened

Geographic Range [top]

Range Description: This species is known from isolated populations from extreme northern Malawi, south-central Tanzania (Poroto and Ukinga Mountains) and south-western Kenya, with a single record from Abercorn (=Mbala) Lucheche River in northern Zambia. It ranges from 1,400 to 2,300 m asl.
Kenya; Malawi; Tanzania, United Republic of; Zambia
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: It is probably a common species. Populations fluctuate with fires and drought.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: It occurs in montane grassland and swamp. Its is not known if the species is found in farmland.
Systems: Terrestrial; Freshwater

Threats [top]

Major Threat(s): Fires caused by both farmers and by poachers hunting large mammals are a potential threat. The species is also threatened by overgrazing of its habitat by domestic livestock.

Conservation Actions [top]

Conservation Actions: The range of the species includes a few protected areas.

Citation: Taylor, P.J. & Maree, S. 2008. Otomys lacustris. The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 30 July 2015.
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