Species: Peromyscus keeni
Northwestern Deermouse
Species
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Encyclopedia of Puget Sound
Classification
Kingdom
Animalia
Phylum
Craniata
Class
Mammalia
Order
Rodentia
Family
Cricetidae
Genus
Peromyscus
NatureServe
Classification
Other Global Common Names
Keen's Mouse - souris de Keen
Informal Taxonomy
Animals, Vertebrates - Mammals - Rodents
Formal Taxonomy
Animalia - Craniata - Mammalia - Rodentia - Cricetidae - Peromyscus - Further taxonomic study is needed.
Ecology and Life History
Short General Description
A mouse.
Migration
true - false - false
Non-migrant
true
Locally Migrant
false
Food Comments
Diet includes various seeds, fruits, and small invertebrates.
Reproduction Comments
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).
Ecology Comments
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.
Length
23
Weight
45
Conservation Status
NatureServe Global Status Rank
G5
Global Status Last Reviewed
2005-03-01
Global Status Last Changed
1996-08-30
Other Status
LC - Least concern
Distribution
Conservation Status Map
<img src="http://www.natureserve.org/explorer/servlet/GetMapGif?CA.BC=S5&CA.YT=S4&US.AK=S4&US.WA=S4" alt="Conservation Status Map" style="width: 475px; height: auto;" />
Global Range
CE - 250-20,000 square km (about 100-8000 square miles) - CDE - "Washington north to southern Alaska, 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. Occurs sympatrically with <i>Peromyscus maniculatus austerus</i> in the southern portion of this distribution as well as Balaclava, Malcolm, and Vancouver islands, British Columbia" (Hogan et al. 1993). <i>Peromyscus keeni</i> also occurs in Yukon Territory and occurs farther inland in British Columbia than previously documented (Lucid and Cook 2004).<br><br>Included are the ranges of the following nominal <i>Peromyscus maniculatus</i> and <i>P. sitkensis</i> taxa of Hall (1981): <i>oreas</i>, <i>interdictus</i>, <i>isolatus</i>, <i>sitkensis</i>, <i>oceanicus</i>, <i>algidus</i>, <i>hylaeus</i>, <i>keeni</i>, <i>macrorhinus</i>, and <i>prevostensis </i>(<i>carli</i>, <i>doylei</i>, and <i>triangularis </i>probably also should be included) (Hogan et al. 1993).<br><br>Former species "<i>P. sitkensis</i>" occurs only on several smaller outer islands of the Alexander Archipelago off southern coast of Alaska; <i>Peromyscus </i>populations on the Queen Charlotte Islands of British Columbia were identified as <i>P. sitkensis</i> by Thomas (1973), as <i>P. oreas</i> by Gunn and Greenbaum (1986). <br><br>Former species "<i>P. oreas</i>" occurs in western Washington and southwestern British Columbia (see Allard et al. [1987] for localities); exact range is uncertain due to current difficulties in allocating certain island populations to a particular species (Carleton 1989).<br><br><i>Peromyscus keeni</i> is sympatric with <i>Peromyscus maniculatus</i> throughout the Olympic Peninsula and the Puget Sound region and along the Pacific coast west of the Coast and Cascade ranges (subspecies <i>oreas</i>); also occurs on northern and western Vancouver Island (subspecies <i>interdictus</i>) and small islands in the Queen Charlotte Strait (subspecies <i>isolatus</i>) (identified as <i>P. sitkensis</i> by Thomas 1973).
Global Range Code
CE
Global Range Description
250-20,000 square km (about 100-8000 square miles)