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Callosciurus melanogaster 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Rodentia Sciuridae

Scientific Name: Callosciurus melanogaster (Thomas, 1895)
Common Name(s):
English – Mentawai Squirrel

Assessment Information [top]

Red List Category & Criteria: Vulnerable B1ab(ii,iii)+2ab(ii,iii) ver 3.1
Year Published: 2016
Date Assessed: 2016-05-05
Assessor(s): Lee, B.
Reviewer(s): Amori, G.
Contributor(s): Lunde, D.P., Tizard, R.J & Duckworth, J.W.
Facilitator/Compiler(s): Clayton, E. & Kennerley, R.
Justification:
The Mentawai Squirrel is assessed as Vulnerable, because its extent of occurrence is less than 20,000 km² and its area of occupancy is less than 2,000 km², it is known from only the four islands belonging to the Mentawai Archipelago, its distribution is severely fragmented, and there is a continuing decline in the extent and quality of its forest habitat.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is endemic to the Mentawai Archipelago, Indonesia. It occurs on Siberut, Sipura, and North Pagai islands (Thorington and Hoffmann 2005) and also South Pagai (Thorington et al. 2012).
Countries occurrence:
Native:
Indonesia
Additional data:
♦ Estimated area of occupancy (AOO) - km2:500-2000♦ Continuing decline in area of occupancy (AOO):Yes
♦ Estimated extent of occurrence (EOO) - km2:13319
♦ Continuing decline in extent of occurrence (EOO):Yes
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The population of this species has been much reduced due to forest loss on all four islands.
Current Population Trend:Decreasing
Additional data:
♦ Population severely fragmented:Yes

Habitat and Ecology [top]

Habitat and Ecology:This species lives in lowland primary and secondary forest.
Systems:Terrestrial
Continuing decline in area, extent and/or quality of habitat:Yes

Use and Trade [top]

Use and Trade: There is no use and trade information for this species.

Threats [top]

Major Threat(s): The habitat of this species is being deforested for timber, firewood and conversion to agricultural land.

Conservation Actions [top]

Conservation Actions: This species is present in Siberut National Park.

Classifications [top]

1. Forest -> 1.6. Forest - Subtropical/Tropical Moist Lowland
suitability:Suitable  
2. Land/water management -> 2.1. Site/area management

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
  Occur in at least one PA:Yes
In-Place Species Management
In-Place Education
2. Agriculture & aquaculture -> 2.1. Annual & perennial non-timber crops -> 2.1.1. Shifting agriculture
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation
2. Agriculture & aquaculture -> 2.1. Annual & perennial non-timber crops -> 2.1.2. Small-holder farming
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation
5. Biological resource use -> 5.3. Logging & wood harvesting -> 5.3.5. Motivation Unknown/Unrecorded
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation
3. Monitoring -> 3.1. Population trends

Bibliography [top]

IUCN. 2016. The IUCN Red List of Threatened Species. Version 2016-3. Available at: www.iucnredlist.org. (Accessed: 07 December 2016).

Thorington Jr., R.W. and Hoffmann, R.S. 2005. Family Sciuridae. In: D.E. Wilson and D.M. Reader (eds), Mammal Species of the World, pp. 754-818. The John Hopkins University Press, Baltimore, MD, USA.

Thorington Jr., R.W, Koprowski, J.L., Steele, M.A. and Whatton, J.F. 2012. Squirrels of the World. The John Hopkins University Press, Baltimore.
Citation: Lee, B. 2016. Callosciurus melanogaster. The IUCN Red List of Threatened Species 2016: e.T3598A22254282. . Downloaded on 21 October 2017.
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