Tag Archives: Peromyscus guardia

Peromyscus guardia ssp. ‘Isla Estanque’

Estanque Deermouse (Peromyscus guardia ssp.)

The Estanque Deermouse was endemic to the Isla Estanque, a tiny, only 0,83 km² large islet south to Isla Ángel de la Guarda in the Gulf of California, Baja California, Mexico. However, this particular population apparently was never officially described and may in fact have been identical to the nominate subspecies inhabiting Isla Ángel de la Guarda. 

Anyway, whether endemic or not, the deermice of Isla Estanque are gone now, the whole population appears to have been wiped out within a single year (1998 to 1999) by a single feral cat! [1]

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References:

[1] Ella Vázquez-Domínguez; Gerardo Ceballos; Juan Cruzado: 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(3): 347-350. 2004

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edited: 23.01.2020

Peromyscus guardia ssp. mejiae Burt

Mejia Island Deermouse (Peromyscus guardia ssp. mejiae)

The Mejia Island Deermouse, described in 1932, was a subspecies of the Guarda Deermouse (Peromyscus guardia Townsend) and was endemic to the tiny Isla Mejía in the Gulf of California, Baja California, Mexico.

This mouse was last recorded in 1973 but disappeared sometimes after that date due to predation by introduced cats and competition by likewise introduced mice and rats. [1]

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References:

[1] Erik Mellink; Gerardo Ceballos; Jaime Luévano: Population demise and extinction threat of the Angel de la Guarda deer mouse (Peromyscus guardia) Biological Conservation 108: 107-111. 2007

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edited: 23.01.2020

Peromyscus guardia ssp. guardia Townsend

La Guarda Deermouse (Peromyscus guardia ssp. guardia)

The La Guarda Deermouse, also known as Angel Island Mouse, was described in 1912, the species is restricted to the Isla Ángel de la Guarda and several of the nearby smaller islets in the Gulf of California, Baja California, Mexico.

The nominate form inhabited the largest of the islands, Isla Ángel de la Guarda.

The La Guarda Deermouse with all its subspecies is now considered extinct, it fell victim to predation by introduced feral cats as well as competition by likewise introduced House Mice (Mus musculus L.), which now are found all over these islands.

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edited: 23.01.2020

Peromyscus guardia ssp. harbisoni Banks

Granito Deermouse (Peromyscus guardia ssp. harbisoni)

The Granito Deermouse, described in 1967, was a subspecies of the Guarda Deermouse (Peromyscus guardia Townsend) and was restricted to the small Isla Granito in the Gulf of California, Baja California, Mexico.

The whole species, including its three named and one unnamed subspecies, is now extinct.

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edited: 23.01.2020