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Peromyscus madrensis

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA MAMMALIA RODENTIA CRICETIDAE

Scientific Name: Peromyscus madrensis
Species Authority: Merriam, 1898
Common Name(s):
English Tres Marias Deer Mouse, Tres Marias Island Mouse

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iv,v)+2ab(iv,v) ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Álvarez-Castañeda, S.T., Castro-Arellano, I., Lacher, T. & Vázquez, E.
Reviewer(s): McKnight, M. (Global Mammal Assessment Team) & Amori, G. (Small Nonvolant Mammal Red List Authority)
Justification:
Listed as Endangered because its extent of occurrence is less than 5,000 km2, its area of occupancy is less than 500 km2, all individuals are in fewer than five locations, and there is a continuing decline in the number of locations and number of mature individuals.
History:
1996 Vulnerable

Geographic Range [top]

Range Description: This species occurs in the Islas Marías group: San Juanito, María Madre, María Magdalena, and María Cleofás, located off the central western coast of México (Alvarez-Castañeda and Mendez 2005).
Countries:
Native:
Mexico
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: This mouse is abundant in all habitats on María Cleofás Island, the least disturbed island in the chain. On other islands, this species is rare. No individuals were collected in 1991 on María Magdalena Island (Alvarez-Castañeda and Mendez 2005); this species may be extirpated from this island.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: This species is present in several habitats, but mainly in tropical deciduous forest. Often, P. madrensis has been found in the interior highlands, near dry riverbeds, and on the surrounding hillsides. This mouse lives under logs, projecting roots, rocks, and small ledges. Pregnant and lactating females and juveniles of both sexes were found in March (Alvarez-Castañeda and Mendez 2005).
Systems: Terrestrial

Threats [top]

Major Threat(s): This species may be threatened due to competition for resources with introduced fauna (including Capra hircus, Odocoileus virginianus, and Rattus rattus) (Wilson 1991). There is a federal prison on María Madre, and the island houses more than 5,000 people, as well as cattle, horses, goats, sheep, donkeys, rabbits, poultry, and cats (Lopez-Forment et al. 1996). The population of P. madrensis on this island is likely the most threatened by introduced fauna.

Conservation Actions [top]

Conservation Actions: This species is protected in Mexico (NOM-059-ECOL-2001). The range of this species is within Islas Marias Biosphere Reserve.

Citation: Álvarez-Castañeda, S.T., Castro-Arellano, I., Lacher, T. & Vázquez, E. 2008. Peromyscus madrensis. The IUCN Red List of Threatened Species. Version 2014.3. <www.iucnredlist.org>. Downloaded on 23 December 2014.
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