Texas kangaroo rat

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Texas kangaroo rat
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Family: Heteromyidae
Genus: Dipodomys
Species:
D. elator
Binomial name
Dipodomys elator
Merriam, 1894

The Texas kangaroo rat (Dipodomys elator) is a rodent of the family Heteromyidae. [2] It is found in Texas and Oklahoma in the United States, where it often lives in association with brush species, like mesquite and lotebush, growing in areas with firm clay-loam soils. The species is listed as threatened by the Texas Parks and Wildlife Department and the IUCN lists the species as vulnerable.

Description

It is a relatively large kangaroo rat that ranges in size from approximately 60 grams to 95 or more. Males and females of this species are sexually dimorphic, males being larger than females. Its distribution is within north-central Texas and it is only found within 13 counties.

Diet and behavior

At one time, many thought that Texas kangaroo rats were associated with brush, especially mesquite. Recent investigations indicate that lotebush is also important and the rat may not even need brush. Burrows are not always associated with brush species and can occur on small prairie mounds. They also opportunistically use loose, friable soil that accumulates along fence lines and pasture roads. [3] [4]

The rat has been shown in a study that analyzed cheek pouch contents of several individuals to eat leaves of grasses and some perennials, stems, and seeds. In this one study area near fields that contained Johnson grass and cultivated oats, seeds from these plants were found to make up the largest part of their diet.

Breeding

Breeding has not been studied extensively but generally they have a promiscuous mating system, mature early, mate all year with peaks in spring and summer, and have about 3 young per brood.

Conservation

One of the largest threats that this organism faces is habitat loss and degradation due to agriculture within Texas. Monocultures like wheat fields are a large issue and under- or overgrazing rangelands can be a problem when range plants become too dense or to many cattle eat the plants that they feed on during instances of overgrazing. However, if grazing occurs properly, the rodents benefit. Proper grazing helps create amounts of bare ground needed for dust bathing, movement, seed caching, and burrow sites. [3] [4] This is an area that should be researched more in order to better understand their habitat selection and the effect that these land-use practices have on the organism.

Related Research Articles

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Kangaroo rats, small mostly nocturnal rodents of genus Dipodomys, are native to arid areas of western North America. The common name derives from their bipedal form. They hop in a manner similar to the much larger kangaroo, but developed this mode of locomotion independently, like several other clades of rodents.

<span class="mw-page-title-main">Giant kangaroo rat</span> Species of rodent

The giant kangaroo rat is an endangered species of heteromyid rodent endemic to California.

<span class="mw-page-title-main">Heteromyidae</span> Family of rodents

Heteromyidae is a family of rodents consisting of kangaroo rats, kangaroo mice, pocket mice and spiny pocket mice. Most heteromyids live in complex burrows within the deserts and grasslands of western North America, though species within the genus Heteromys are also found in forests and their range extends as far south as northern South America. They feed mostly on seeds and other plant parts, which they carry in their fur-lined cheek pouches to their burrows.

<span class="mw-page-title-main">Dipodomyinae</span> Subfamily of rodents

Dipodomyinae is a subfamily of heteromyid rodents, the kangaroo rats and mice. Dipodomyines, as implied by both their common and scientific names, are bipedal; they also jump exceptionally well. Kangaroo rats and mice are native to desert and semidesert ecosystems of western North America from southern Canada to central Mexico. They are generally herbivorous foragers, and dig and live in burrows.

<span class="mw-page-title-main">Ord's kangaroo rat</span> Species of rodent

Ord's kangaroo rat is a kangaroo rat native to western North America, specifically the Great Plains and the Great Basin, with its range extending from extreme southern Canada to central Mexico.

<span class="mw-page-title-main">Agile kangaroo rat</span> Species of rodent

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<span class="mw-page-title-main">Gulf Coast kangaroo rat</span> Species of rodent

The Gulf Coast kangaroo rat is a species of rodent in the family Heteromyidae found in Mexico and the state of Texas in the United States. Its appearance and ecology are very similar to those of its putative sister species, Ord's kangaroo rat.

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<span class="mw-page-title-main">San Quintin kangaroo rat</span> Species of rodent

The San Quintin kangaroo rat is a species of rodent in the family Heteromyidae. It is endemic to Mexico, where it is known only from western Baja California. Its natural habitat includes arid lowlands with sparse vegetation.

<span class="mw-page-title-main">Heermann's kangaroo rat</span> Species of rodent

Heermann's kangaroo rat is a species of rodent in the family Heteromyidae. Their long smooth pelage resembles typical kangaroo rats, with their dorsal side showing a mixed range of olive, black and orange colors. There are 9 distinguished sub-species of Dipodomys heermanni: D.h. arenae, D.h. berkeleyensis, D.h. dixoni, D.h. goldmani, D.h. heermanni, D.h. jolonensis, D.h.morroensis, D.h. swarthi, and D.h. tularensis. The dental formula of Dipodomys heermanni is 1.0.1.31.0.1.3 × 2 = 20.

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<span class="mw-page-title-main">Merriam's kangaroo rat</span> Species of rodent

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<span class="mw-page-title-main">Nelson's kangaroo rat</span> Species of rodent

Nelson's kangaroo rat is a species of rodent in the family Heteromyidae which is endemic to the central plateau of Mexico.

<span class="mw-page-title-main">Fresno kangaroo rat</span> Species of rodent

The Fresno kangaroo rat or San Joaquin kangaroo rat is a species of rodent in the family Heteromyidae. It is endemic to areas within and near the San Joaquin Valley of California in the United States. Habitat destruction due to agricultural development and urbanization has put this species at risk, and the International Union for Conservation of Nature has assessed its conservation status as "vulnerable".

<span class="mw-page-title-main">Panamint kangaroo rat</span> Species of rodent

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<span class="mw-page-title-main">Phillips's kangaroo rat</span> Species of rodent

Phillips's kangaroo rat is a species of rodent in the family Heteromyidae. It is endemic to Mexico. Its natural habitat is hot deserts.

<span class="mw-page-title-main">Banner-tailed kangaroo rat</span> Species of rodent

The banner-tailed kangaroo rat is a species of rodent in the family Heteromyidae. It is found in arid environments in the southwestern United States and Mexico where it lives in a burrow by day and forages for seeds and plant matter by night.

<span class="mw-page-title-main">Stephens's kangaroo rat</span> Species of rodent

Stephens's kangaroo rat is a species of rodent in the family Heteromyidae. It is endemic to the Southern California region of the United States, primarily in western Riverside County. The species is named after American zoologist Frank Stephens (1849–1937).

The Dulzura kangaroo rat, or San Diego kangaroo rat is a species of rodent in the family Heteromyidae. It is found in Baja California, Mexico, and in the Colorado Desert and elsewhere in California in the United States. It is a common species and the IUCN has assessed its status as being of "least concern".

References

  1. Wahle, R.; Roth, E.; Horner, P. (2018). "Dipodomys elator". IUCN Red List of Threatened Species . 2018: e.T6675A22227507. doi: 10.2305/IUCN.UK.2018-1.RLTS.T6675A22227507.en . Retrieved 13 November 2021.
  2. Patton, J.L. (2005). "Family Heteromyidae". In Wilson, D.E.; Reeder, D.M (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. p. 845. ISBN   978-0-8018-8221-0. OCLC   62265494.
  3. Nelson, A. D. (2011). "Vegetation associated with the Texas kangaroo rat burrows in Wichita County, Texas". Texas Journal of Science. 66: 3-20. Retrieved 22 February 2021.
  4. Nelson, A. D. (2009). "Changes in vegetation patterns and their effect on Texas kangaroo rats". Texas Journal of Science. 61: 119-130. Retrieved 22 February 2021.


Further reading