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.
No spiny pocket mouse dove or floated, and the animals were soon (1 min or less) oriented almost vertically in the water (Table 1).
Chromosomes and evolutionary trends in the pocket mouse subgenus Perognathus (Rodentia: Heteromyidae).
One report even noted that the hikers and bikers cause more damage to the pocket mouse population than any road would; hikers and bikers routinely crush the mice and ruin their burrows.
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.
Comparative phylogeography of Baileys' pocket mouse (Chaetodipus baileyi) and the Peromyscus eremicus species group: Historical vicariance of the Baja California Peninsular Desert.
Montanus; medium = North American deermouse Peromyscus maniculatus, hispid pocket mouse Chaetodipus hispidus, northern grasshopper mouse Onychomys leucogaster, house mouse Mus musculus, Ord's kangaroo rat (Dipodomys ordii); large = hispid cotton rat Sigmodon hispidus, thirteen-lined ground squirrel Spermophilus tridecemlineatus, southern plains woodrat Neotoma micropus) and analyzed number of crossings for each size of animal.
Near Presidio, Texas (Presidio County), three species can be found: the desert pocket mouse (Chaetodipus penicillatus Woodhouse), Nelson's pocket mouse (C.
maniculatus), western harvest mouse (Reithrodontomys megalotis), California pocket mouse (Chaetodipus californicus), agile kangaroo rat (Dipodomys agilis), California ground squirrel (Spermophilus beecheyi), and Botta's pocket gopher (Thomomys bottae) (S.
montanus), and three species of pocket mouse (hispid pocket mouse Chaetodipus hispidus, silky pocket mouse Perognathus flavus, and plains pocket mouse P.