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Peromyscus keeni

(Rhoades, 1894)

Northwestern Deermouse

G5Secure Found in 5 roadless areas NatureServe Explorer →
G5SecureGlobal Rank
Least concernIUCN
Identity
Unique IDELEMENT_GLOBAL.2.100124
Element CodeAMAFF03190
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVertebrate Animal
IUCNLeast concern
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomAnimalia
PhylumCraniata
ClassMammalia
OrderRodentia
FamilyCricetidae
GenusPeromyscus
Other Common Names
Keen's Mouse (EN) northwestern deermouse (EN) Souris de Keen (FR)
Concept Reference
Bradley, R. D., J. Q. Francis, R. N. Platt II, T. J. Soniat, D. Alvarez, and Laramie L. L. Lindsey. 2019. Mitochondrial DNA sequence data indicate evidence for multiple species within Peromyscus maniculatus. Special Publications, Museum of Texas Tech University Number 70. 59 pp.
Taxonomic Comments
Based on the results of Hogan et al. (1993) and distributional data presented in Hall (1981), Bradley et al. (2019) tentatively recognize 22 subspecies.
Conservation Status
Rank MethodExpertise without calculation
Review Date2016-04-04
Change Date1996-08-30
Edition Date2005-03-01
Edition AuthorsHammerson, G.
Range Extent250-20,000 square km (about 100-8000 square miles)
Number of Occurrences81 to >300
Rank Reasons
Widespread on coastal islands and western mainland of the Pacific Northwest from Washington to southern Alaska; precise distribution is not clearly known; taxonomy of PEROMYSCUS has been unstable in this region.
Range Extent Comments
This species occurs in the coastal regions (west of the Coastal and Cascade mountain ranges) in southern Alaska southward to central Washington, USA. It also occurs on most of the islands in the Queen Charlotte Sound (coastal region of British Columbia, Canada) and the Alexander Archipelago (southwestern coast Alaska) (Bradley et al. 2019).
Occurrences Comments
Many local populations.
Ecology & Habitat

Diagnostic Characteristics

Differs from P. MANICULATUS in being significantly larger, with tail length typically greater than 100 mm; chromosome FN (85-92) exceeds that of sympatric populations of low-FN (74-78) P. M. AUSTERUS (Hogan et al. 1993).

Habitat

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

Ecology

Distribution of "SITKENSIS" on smaller outer islands indicates it is probably less competitive than MANICULATUS, which occupies larger islands (Banfield 1974). "SITKENSIS" probably originally reached many islands on natural rafts.

Reproduction

Multiple litters of about 3-5 young probably are produced each year. Gestation lasts about 23 days (nonlactating) or 25 days (lactating) (Kirkland and Layne 1989). Probably capable of breeding at about 5-6 weeks. In southern British Columbia, "OREAS" was reported as breeding from March through July; 21 litters averaged 6.1 young (see Kirkland and Layne 1989).
Terrestrial Habitats
Forest - HardwoodForest - ConiferForest - MixedWoodland - HardwoodWoodland - ConiferWoodland - MixedShrubland/chaparralSavannaGrassland/herbaceousOld fieldSuburban/orchard
Palustrine Habitats
Riparian
Other Nations (2)
CanadaN5
ProvinceRankNative
Yukon TerritoryS4Yes
British ColumbiaS5Yes
United StatesN5
ProvinceRankNative
AlaskaS5Yes
WashingtonS4Yes
Roadless Areas (5)
Alaska (5)
AreaForestAcres
KartaTongass National Forest52,117
Middle KruzofTongass National Forest14,724
North KruzofTongass National Forest33,146
Soda BayTongass National Forest78,091
South KruzofTongass National Forest55,193
References (37)
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