pocket mouse

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pocket mouse,

small jumping rodent of W North America and as far south as N South America. More closely related to the squirrel than the true mouse, the pocket mouse gets its name from the fur-lined cheek pouches in which it carries its food. It varies in length from 3 to 12 in. (7.6–30.5 cm) according to the species and has hind legs elongated for jumping. Species of the genus Perognathus are soft furred; species of the genera Liomys and Heteromys have stiff, flattened spines mixed in with the fur. The pocket mouse is a solitary, nocturnal animal, living in grass-lined burrows in desert and semidesert regions; one Heteromys species lives in humid forests. The rodent feeds on seeds and other vegetable matter. It can live for long periods without free water by utilizing the moisture available from food and its own digestive processes and by secreting concentrated urine. Females give birth to several litters a year, each litter containing from one to eight young. Gestation takes from 24 to 33 days. Pocket mice have many natural enemies but in captivity have lived as long as five years. They are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Mammalia, order Rodentia, family Heteromyidae.
References in periodicals archive ?
The Overlook Spiny Pocket Mouse is found in elevations ranging from 350 to 2,450 meters above sea level, although mostly above 700 meters.
However, one saltcedar grid (saltcedar 1) had a high diversity index due to even numbers of captures of the white-footed deermouse Peromyscus leucopus and the Chihuahuan Desert pocket mouse.
Large size prevents confusion of the hispid pocket mouse and any of its anatomical components with smaller pocket mice.
Chromosomes and evolutionary trends in the pocket mouse subgenus Perognathus (Rodentia: Heteromyidae).
Selection of high temperatures for hibernation by the pocket mouse, Perognathus longimembris: ecological advantages and energetic consequences.
Four species (Sigmodon hispidus = hispid cotton rat, Tamias minimus = least chipmunk, Chaetodipus hispidus = hispid pocket mouse, and Perognathus flavus = silky pocket mouse) with fewer than five expected dual captures but one or more observed dual captures were not evaluated further.
Here we report identification of remains of the northern pygmy mouse (Baiomys taylon), fulvous harvest mouse (Reithrodontomys fulvescens), and Merriam's pocket mouse (Perognathus merriami) as prey of the western burrowing owl.
The distribution of Merriam's pocket mouse is known from the western two-thirds of the state, but it is absent from the extreme northern Panhandle and western Trans-Pecos due to the presence of Perognathus flavus (Lee & Engstrom 1991; Davis & Schmidly 1994).
Bailey's pocket mouse (Chaetodipus baileyi) was the most common species captured (57% of rodents captured).
boylii), and California pocket mouse (Chaetodipus californicus) in a mixed blue oak-coast live oak (Quercus douglasii-Q.
Five specimens of the rock pocket mouse (TTU 47221-47225) were collected from Ward County on 25 July 1987 from two miles west of Barstow.