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Texas kangaroo rat

Species of rodent

The Texas kangaroo rat (Dipodomys elator) is a rodent of the family Heteromyidae. 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. 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.

References

Wahle, R.. (2018). "''Dipodomys elator''".
{{MSW3 Heteromyidae
(2011). "Vegetation associated with the Texas kangaroo rat burrows in Wichita County, Texas.". Texas Journal of Science.
(2009). "Changes in vegetation patterns and their effect on Texas kangaroo rats". Texas Journal of Science.

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

dipodomys endemic-rodents-of-the-united-states mammals-described-in-1894 taxa-named-by-clinton-hart-merriam iucn-red-list-vulnerable-species

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