Morro Bay kangaroo rat

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Morro Bay kangaroo rat
Federally endangered Morro bay kangaroo rat, last documented in the wild in 1986. (31045316021).jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Family: Heteromyidae
Genus: Dipodomys
Species:
Subspecies:
D. h. morroensis
Trinomial name
Dipodomys heermanni morroensis
(Merriam, 1907)

The Morro Bay kangaroo rat(Dipodomys heermanni morroensis), is an endagered rodent in the Heteromyidae family and endemic to San Luis Obispo County, California. The species is the smallest subspecies of the Heermann's kangaroo.

Contents

Distribution and habitat

The Heermann's kangaroo rat (Dipodomys heermanni) is found in warm and semi desert areas. The Morro Bay kangaroo rat (D. h. morroensis) subspecies is unique to Baywood fine sands, a soil type found in Morro Bay, Los Osos, and Montana de Oro State Park on the Central Coast of California. As a result, the Morror Bay kangaroo rat lives in a restricted 2 km area south of Morro Bay in San Luis Obispo County, California.

The burrows of the Morro Bay kangaroo rat enter the ground at an angle.

Morphology

Like gerbils and pyramid rats, the Morro Bay kangaroo rats resemble little kangaroos, with well-developed hind limbs for jumping, short front limbs, and a long tail used for balance while leaping. Their ears are average in size and the hair on their backs varies between brown and yellow, while the hair on their bellies is white. As nocturnal animals, their eyes are very large. The Morro Bay kangaroo rat is 11 to 13 cm long and its tail measures between 16 and 19 cm. It weighs between 60 and 80 g.

The Morro Bay subspecies is the smallest of all subspecies. The male is measured to be 300.4 mm while the females are about 295.1 mm long.

Behaviour

The primary food of Morro Bay kangaroo rats is seeds.

They have 2 to 3 litters a year. The amount of pups in the litter ranges from one to seven with the average being two. They are born with no hair, eyes, ears closed, and toothless.

Endangered and missing

The Morro Bay kangaroo rat is federally endangered. [1] As of 2023, despite numerous localized and range-wide surveys, the animal has not been detected by any of these analyses and has remained unseen since 1986. [2]

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">Estero Bay (California)</span> Bay on the coast of California, United States

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

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

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<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">Fresno kangaroo rat</span> Species of rodent

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

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<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">Silky pocket mouse</span> Species of rodent

The silky pocket mouse is a species of rodent in the family Heteromyidae. It is found in northern and central Mexico and the southwest region of the United States. It is a species of least concern, according to the IUCN, with no known major threats. The silky pocket mouse eats seeds, succulent parts of plants and nuts, and carries food in its cheek pouches. It lives in low valley bottoms with soft soils, among weeds and shrubs, where it burrows in the sand to bury seed caches. The species is more tolerant of harsh habitat conditions than other pocket mice.

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

The Tipton kangaroo rat, is a subspecies of the San Joaquin kangaroo rat, a rodent in the family Heteromyidae.

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".

The San Bernardino kangaroo rat is a species of rodent in the family Heteromyidae. It is one of 19 recognized subspecies of Merriam's kangaroo rat that are spread throughout the arid regions of the southwestern United States and Mexico.

References

  1. USFWS (2011). Morro Bay kangaroo rat (Dipodomys heermanni morroensis) - U.S. Fish and Wildlife Service Species Profile. Downloaded on 19 February 2011 from http://ecos.fws.gov/speciesProfile/profile/speciesProfile.action?spcode=A03X. Archived 2011-10-15 at the Wayback Machine
  2. Hopkins, Jaran; Bean, Tim; Villablanca, Francis (February 2023). "Determining Extinction for Small Cryptic Species: The Morro Bay Kangaroo Rat". Diversity. 15 (2): 245. doi: 10.3390/d15020245 . ISSN   1424-2818.