Peromyscus keeni 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Rodentia Cricetidae

Scientific Name: Peromyscus keeni (Rhoades, 1894)
Common Name(s):
English Northwestern Deermouse, Keen's Mouse
Peromyscus oreas Bangs, 1898
Peromyscus sitkensis Merriam, 1897
Taxonomic Notes: Peromyscus keeni includes populations that formerly were recognized as P. oreas, P. sitkensis, and some of those assigned to P. maniculatus (see Musser and Carleton (in Wilson and Reeder 2005)). Hogan et al. (1993) analyzed chromosomes, allozymes, and mtDNA of Pacific Northwest Peromyscus and concluded that P. oreas, P. sitkensis, P. maniculatus algidus, P. m. hylaeus, P. m. keeni, P. m. macrorhinus, and P. m. prevostensis should be recognized as members of the newly constituted species Peromyscus keeni; further, they suspected that P. m. carli, P. m. doylei, and P. m. triangularis also are members of P. keeni.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2016
Date Assessed: 2016-08-18
Assessor(s): Cassola, F.
Reviewer(s): Amori, G.
Contributor(s): Hammerson, G.A. & Linzey, A.
Listed as Least Concern because it is widespread, appears to be abundant, there are no major threats and its populations are not in decline.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species occurs from Washington north to southern Alaska in the United States and Canada, and west of the Coastal and Cascade mountain ranges, including the Queen Charlotte Islands and islands along the coast of British Columbia and the Alexander Archipelago. Peromyscus keeni also occurs in Yukon Territory and occurs farther inland in British Columbia than previously documented (not mapped here) (Lucid and Cook 2004).

Included are the ranges of the following nominal Peromyscus maniculatus and P. sitkensis taxa of Hall (1981): oreas, interdictus, isolatus, sitkensis, oceanicus, algidus, hylaeus, keeni, macrorhinus, and prevostensis (carli, doylei, and triangularis probably also should be included) (Hogan et al. 1993).
Countries occurrence:
Canada; United States
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This species is widespread on coastal islands and the western mainland of the Pacific Northwest from Washington to southern Alaska.
Current Population Trend:Stable
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species inhabits western coastal lowlands to high-elevation alpine forests. They appear to avoid closed canopy forested habitats and, at lower elevations, associate with edge vegetation, along logging roads, or at the periphery of small islands. They will enter human habitations. Diet includes various seeds, fruits, and small invertebrates.

On outer coastal islands it inhabits the edge of dense Sitka spruce-western cedar forests, and is found at forest edge and on beaches in cover of logs, stumps and rock crevices (Banfield 1974).

Multiple litters of about 3-5 young probably are produced each year. Gestation lasts about 23 days (non lactating) or 25 days (lactating) (Kirkland and Layne 1989). Probably capable of breeding at about 5-6 weeks. In southern British Columbia, it was reported as breeding from March through July.

Its distribution on smaller outer islands indicates it is probably less competitive than maniculatus, which occupies larger islands (Banfield 1974). It probably originally reached many islands on natural rafts.
Generation Length (years):1-2

Threats [top]

Major Threat(s): There are no known threats to this species.

Conservation Actions [top]

Conservation Actions: This species is not of conservation concern and its range includes several protected areas.

Errata [top]

Errata reason: This errata assessment has been created because the map was accidentally left out of the version published previously.

Citation: Cassola, F. 2016. Peromyscus keeni (errata version published in 2017). The IUCN Red List of Threatened Species 2016: e.T135164A115204632. . Downloaded on 20 May 2018.
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