The Western Harvest Mouse (Reithrodontomys megalotis) was designated by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) as a species of Special Concern because it has a limited range, and small extent of occurrence and area of occupancy. It is listed as Special Concern under Schedule 1 of the Species at Risk Act (SARA). In British Columbia (B.C.), the Western Harvest Mouse is ranked S2S3 (imperiled to vulnerable) by the Conservation Data Centre and is on the provincial Blue list. The B.C. Conservation Framework ranks the Western Harvest Mouse as a priority 2 under goal 3 (to maintain the full diversity of native species and ecosystems)....
Threats to the Western Harvest Mouse include loss of habitat due to conversion of land for residential and agricultural development as well as livestock grazing, predation by cats, and the application of rodenticides. A lack of comprehensive studies has resulted in knowledge gaps that limit understanding of other threats to the Western Harvest Mouse.
The management goal is to maintain stable or increasing populations of the Western Harvest Mouse distributed throughout the species known range in B.C.
Management objectives for the Western Harvest Mouse include:
1. Quantify population, habitat, and distribution targets required to maintain viable populations.
2. Secure protection1 for priority populations and habitats.
3. Assess and mitigate current threats at priority populations in B.C.
4. Address knowledge gaps related to key elements of Western Harvest Mouse ecology (e.g., home range size, dispersal, relative importance of different habitat types) and threats (e.g., impacts of livestock grazing, rodenticides).
B.C. Ministry of Environment. 2014. Management Plan for the Western Harvest Mouse (Reithrodontomys megalotis) in British Columbia. Province of B.C., Ministry of Environment. Management Plan (Species at Risk)
Topic: Recovery Planning
Scientific Name: Reithrodontomys megalotis
English Name: Western Harvest Mouse
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