Peromyscus guardia guardia Townsend, 1912:126

Ángel de la Guarda deer mouse, Angel Island mouse



Taxonomy & Nomenclature

Synonym/s: Peromyscus guardia Townsend, 1912:126


Conservation Status


Last record: 1991 (Fisher & Blomberg, 2012; Lee et al., 2017)

IUCN RedList status: Critically Endangered (Possibly Extinct)



Ángel de la Guarda Island, Gulf of California, México


Biology & Ecology










Original scientific description:

Townsend, Charles Haskins. (1912). Mammals collected by the 'Albatross' expedition in lower California in 1911, with descriptions of new species. Bulletin of the American Museum of Natural History 31: 117-130 + 2 pls.


Other references:

Álvarez-Castañeda, Sergio Ticul and Ortega-Rubio, Alfredo. (2003). Current status of rodents on islands in the Gulf of California. Biological Conservation 109(2): 157-163.

Álvarez-Castañeda, S.T., Castro-Arellano, I., Lacher, T. & Vázquez, E. (2008). Peromyscus guardia. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. ( Downloaded on 28 January 2012.

Banks, R. C. (1967). The Peromyscus guardiainterparietalis complex. Journal of Mammalogy 48: 210-218. [Abstract]

Blázquez, Ma Carmen et al. (2018). Stable isotope analyses suggest Mus musculus occupies the place of the “possibly extinct” Peromyscus guardia in Angel de la Guarda Island, (Mexico). Mammal Research. [Abstract]

Brand, L. R. and Ryckman, R. E. (1969). Biosystematics of Peromyscus eremicus, P. guardia and P. interparietalis. Journal of Mammalogy 50: 501–513.

Fisher, Diana O. and Blomberg, Simon P. (2012). Inferring Extinction of Mammals from Sighting Records, Threats, and Biological Traits. Conservation Biology 26(1): 57-67.

Lee, T. E., Fisher, D. O., Blomberg, S. P. and Wintle, B. A. (2017). Extinct or still out there? Disentangling influences on extinction and rediscovery helps to clarify the fate of species on the edge. Global Change Biology 23(2): 621-634.

Mellink, E., Ceballos, G. and Luevano, J. (2002). Population demise and extinction threat of the Angel de la Guarda deer mouse (Peromyscus guarda). Biological Conservation 108: 107-111.

Rios, E. and Álvarez-Castañeda, S. T. (2011). Peromyscus guardia (Rodentia: Cricetidae). Mammalian Species 43(885):172-176.

Vázquez-Domínguez, E., Ceballos, G. and Cruzado, J. (2004). Extirpation of an insular subspecies by a single introduced cat: the case of the endemic deer mouse Peromyscus guardia on Estanque Island, Mexico. Oryx 38: 347-350. [Abstract]


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