San Esteban Deermouse
Peromyscus stephani
Overview
The San Esteban Island mouse is a species of rodent in the family Cricetidae. It is a species of the genus Peromyscus, a closely related group of New World mice often called "deermice". It is endemic to Mexico, where it is known only from San Esteban Island in the northern Gulf of California.
Peromyscus stephani faces severe threats from habitat destruction due to agricultural expansion and urban development across its extremely limited range. The species' small population size makes it particularly vulnerable to stochastic events and genetic bottlenecks. Invasive plant species are altering the native vegetation structure that this mouse depends on for shelter and foraging.
Habitat
This critically endangered deer mouse inhabits dry scrubland and semi-arid grasslands with scattered shrubs, typically at elevations between 1,000-2,000 meters. The species requires areas with dense ground cover and rocky outcrops that provide shelter and nesting sites.
Other threatened species in CRICETIDAE
Threatened in Mexico
Frequently asked questions
Why is San Esteban Deermouse classified as Critically Endangered?
Where does San Esteban Deermouse live?
What are the main threats to San Esteban Deermouse?
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