California kangaroo rat

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California 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. californicus
Binomial name
Dipodomys californicus
Merriam, 1890

The California kangaroo rat (Dipodomys californicus) is a species of rodent in the family Heteromyidae. [2] However, populations are declining, having not fully recovered after the drought in California from 2013 to 2015 destroyed their habitat (the grasslands) and changed it into desert.

Description

Size

The California kangaroo rat is, on average, 312 mm long, with its tail vertebrae comprising 195mm of that total length. Based on its length, experts conclude the weight of the species to be around 75 grams, making its size fairly normal amongst other kangaroo rats in California. [3] The species generally tends to be larger in the northern areas of its distribution (near Modoc County), whereas the smaller animals are often found further south, near the SF Bay Area and Marin County. [3]

Coloration

Dipodomys californicus has an almost all-white underside, including its feet, belly, and forelegs; they also have a dash of black near the ankle. The upper surface of the body tends to be a dark cinnamon-tan shade, extending everywhere but the face, which features darker facial markings. During the molting season for the kangaroo rat (around July through November), the active shedding of the previous year's fur will result in a lighter-textured coat growing anew; the colors remain consistent, however, and the animals' colors generally don't fade or change throughout their lives. [3]

Distribution

The California kangaroo rat is endemic to western North America, found in Northern California and southern Oregon. [4] Its distribution is from the Sierra Nevada foothills to Suisun Bay, and northwards in the California Coast Ranges to the foothills of the Cascade Mountains. [1] However, as of 2020, the California kangaroo rat has been found in north Nevada, 1627–1900 meters in elevation. Not only does this make suggest the most easterly sighting of the species, but it also marks the highest altitude that the species has ever been found. [5] California's Kangaroo Mountain was likely named after the California kangaroo rat. [6]

It is an IUCN listed Least Concern species, due to the rather large home area and vast range of its distribution. The populations also thrive due to the fact that the kangaroo rat is adapted to thrive in hostile climates, where very few humans (in general) have encroached or developed infrastructure. In the cases of populations where the kangaroo rats do live within or near to human settlements, their ecological niche seems to be far less offensive and intrusive towards people than house mice or common rats, making their survival even more likely; kangaroo rats do not scavenge off of trash, human food or waste and do not nest in human habitations. Likewise they do not carry the same pathogens as common mice or rats, further ensuring a steady population. [1]

Taxonomy

Dipodomys californicus was formerly included as a subspecies of Dipodomys heermanni , but differs enough in chromosomal and biochemical characteristics to warrant being recognized as a distinct species. One such distinction between Dipodomys californicus and other four toed species of Dipodmys heermanni is their unique tail coloration which features a white tip with black stripes on the top and bottom. [5]

Related Research Articles

<span class="mw-page-title-main">Kangaroo rat</span> Genus of mammals belonging to the kangaroo rats, kangaroo mice, and pocket mice family of rodents

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.

The Texas kangaroo rat 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.

<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">Morro Bay kangaroo rat</span> Subspecies of rodent

The Morro Bay kangaroo rat, Dipodomys heermanni morroensis, is a rodent in the Heteromyidae family and endemic to San Luis Obispo County, California.

<span class="mw-page-title-main">California pocket mouse</span> Species of rodent

The California pocket mouse is a species of nocturnal and primarily solitary rodent in the family Heteromyidae.

<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.

The San José Island kangaroo rat is a subspecies of rodent in the family Heteromyidae. It is endemic to Mexico, where it is found only on San José Island off the east coast of Baja California Sur. is restricted to an area of only 30 km2 in the southwestern coast of San José Island, Lower California, with the population having been drastically reduced in size and being close to extinction No other species of Dipodomys occur in sympatry with D. insularis.

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

Merriam's kangaroo rat is a species of rodent in the family Heteromyidae. The species name commemorates Clinton Hart Merriam. It is found in the Upper and Lower Sonoran life zones of the southwestern United States, Baja California, and northern 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

The Panamint kangaroo rat is a species of rodent in the family Heteromyidae. It is endemic to the Mojave Desert in eastern California and western Nevada, in the United States.

<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).

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

The narrow-faced kangaroo rat is a species of rodent in the family Heteromyidae. It is endemic to California in the United States.

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. 1 2 3 Cassola, F. (2017) [errata version of 2016 assessment]. "Dipodomys californicus". IUCN Red List of Threatened Species . 2016: e.T42599A115193510. doi: 10.2305/IUCN.UK.2016-3.RLTS.T42599A22228114.en . Retrieved 10 March 2022.
  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. pp. 844–845. ISBN   978-0-8018-8221-0. OCLC   62265494.
  3. 1 2 3 Goldman, E. A.; Grinnell, Joseph (November 1922). "A Geographical Study of the Kangaroo Rats of California". Journal of Mammalogy. 3 (4): 264. doi:10.2307/1373259. hdl: 2027/hvd.32044107347767 . ISSN   0022-2372. JSTOR   1373259.
  4. National Museum of Natural History: Dipodomys californicus .
  5. 1 2 Miles, Danielle C; Burrus, Kelsey R; Shoemaker, Kevin T (2020). "First Records of California Kangaroo Rats, Dipodomys Californicus, in Nevada". Northwestern Naturalist. 101 (1): 61–63. doi:10.1898/1051-1733-101.1.61. S2CID   211228422.
  6. Bright, William (1998). 1500 California Place Names: Their Origin and Meaning. University of California Press. p. 75. ISBN   978-0-520-21271-8.