Overview

Distribution

Range Description

This species is known only from Mt. Kinabalu (Malaysia) in northern Borneo (Musser and Carleton 2005; Md Nor 2001; Musser 1986). It has been recorded between 1,524 and 3,810 m.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This species is found in montane and moss forest, and sub-summit dwarf forest and scrub (Musser 1986). It is not known if the species is present in disturbed habitats. As with related species, it may be readily adapatable to habitat modification.

Systems
  • Terrestrial
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2008

Assessor/s
Aplin, K. & Lunde, D.

Reviewer/s
Amori, G. (Small Nonvolant Mammal Red List Authority) & Schipper, J. (Global Mammal Assessment Team)

Contributor/s

Justification
Listed as Least Concern as it is common within its restricted distribution, it presumably has a large population, it may be adaptable to habitat modification, the distribution is fully within a well-protected area, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category.

History
  • 1996
    Endangered
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Population

Population
This species is common at altitudes between 2130 and 3,810 m on Mt. Kinabalu (Medway 1977; Musser and Newcomb 1983; Musser 1986).

Population Trend
Stable
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Threats

Major Threats
There appear to be no major threats to this species.
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Management

Conservation Actions

Conservation Actions
It is present in Mt. Kinabalu National Park. Further studies are needed into the taxonomy of this species. Surveys are needed to determine if it is present in other mountain areas.
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Wikipedia

Summit rat

The summit rat (Rattus baluensis) is a species of rodent in the family Muridae. It is found only in Malaysia.

The summit rat has a mutualistic relationship with a species of giant pitcher plant, Nepenthes rajah. Like the treeshrew Tupaia montana, it defecates into the plant's traps while visiting them to feed on sweet, fruity secretions from glands on the pitcher lids.[1][2]

References[edit]

  1. ^ Greenwood, M., C. Clarke, C.C. Lee, A. Gunsalam & R.H. Clarke 2011. A unique resource mutualism between the giant Bornean pitcher plant, Nepenthes rajah, and members of a small mammal community. PLoS ONE 6(6): e21114. doi:10.1371/journal.pone.0021114
  2. ^ Wells, K., M.B. Lakim, S. Schulz & M. Ayasse 2011. Pitchers of Nepenthes rajah collect faecal droppings from both diurnal and nocturnal small mammals and emit fruity odour. Journal of Tropical Ecology 27(4): 347–353. doi:10.1017/S0266467411000162


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