Apomys musculus 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Rodentia Muridae

Scientific Name: Apomys musculus Miller, 1911
Common Name(s):
English Least Philippine Apomys, Least Forest Mouse
Taxonomic Notes: The taxonomic status of the species needs revision, as there is significant geographic variation (L. Heaney pers. comm.).

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2016
Date Assessed: 2016-01-25
Assessor(s): Heaney, L.
Reviewer(s): Amori, G.
Contributor(s): Tabaranza, B. & Balete, D.S.
As currently described, it is listed as Least Concern in view of its relatively wide distribution, and its moderately common occurrence particularly at middle elevations. It occurs in a number of protected areas, and it is unlikely to be declining at nearly the rate required to qualify for listing in a threatened category. This species is in need of taxonomic revision.
Previously published Red List assessments:

Geographic Range [top]

Range Description:The species is endemic to the Philippines in Dinagat, Luzon (Benguet, Camarines Sur, Isabela, and Kalinga provinces) (Heaney et al. 2004) and Mindoro islands, occurring from 300-2,000 m (Heaney et al. 1998).
Countries occurrence:
Additional data:
Lower elevation limit (metres):300
Upper elevation limit (metres):2000
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This is a moderately common species particularly at middle elevations (Heaney et al. 1998). There are several scattered specimens from Mindoro and one known record from Dinagat, neither of these islands have had recent or adequate surveys undertaken (B. Tabaranza pers. comm.).
Current Population Trend:Stable
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This is mostly an arboreal species (L. Heaney pers. comm.) found to be abundant in primary montane forest (1,125-1,350 m), uncommon in mossy forest (1,550-1,750 m), and absent in disturbed lowland forest (475-900 m) on Mt. Isarog, southern Luzon (Rickart et al. 1991, Balete and Heaney 1997, Heaney et al. in press). This species has been recorded in disturbed lowland forest at 300 m in northeastern Luzon (Danielsen et al. 1994) and at 1,500 m in Benguet (Miller 1910), and in ridgetop mossy forest at 750 m on Dinagat (Tabaranza unpubl. data).
Generation Length (years):1-2

Threats [top]

Major Threat(s): There are no major threats. The lowland forested areas throughout its range have experienced significant deforestation, and there is continued deforestation ongoing, but the impact is minor to the overall population given the majority of the population is at higher elevations (B. Tabaranza pers. comm.). The local population of Dinagat Island is particularly threatened by mining (B. Tabaranza pers. comm.).

Conservation Actions [top]

Conservation Actions: The species is in need of taxonomic revision and the conservation status must be reassessed.

Citation: Heaney, L. 2016. Apomys musculus. The IUCN Red List of Threatened Species 2016: e.T1915A22431898. . Downloaded on 24 June 2018.
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