Desert pocket gopher

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Desert pocket gopher

Near Threatened  (IUCN 3.1)[1]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Family: Geomyidae
Genus: Geomys
Species:
G. arenarius
Binomial name
Geomys arenarius
Merriam, 1895

The desert pocket gopher (Geomys arenarius) is a species of

state of Chihuahua in Mexico and in Texas and New Mexico in the United States.[1]

Description

Geomys arenarius is a medium sized rodent, with a relatively long and hairy tail, and pale coloration.[2] Like other gophers, their bodies are thicker than other rodents, eyes are reduced, and they are equipped with large, strong-clawed forelimbs allowing them to be fossorial.[2] Their fur is a dull brown along their backs, with scattered black tipped hairs.[2] The dull brown coloration continues dorsally and laterally until it reaches the chest, abdomen and feet, where it sometimes blends with the white hair of these areas.[2]

Phylogeny

The desert pocket gopher is in the genus Geomys , within the family Geomyidae within the order Rodentia. The evolutionary history of Geomys arenarius has been studied by several different parties, but the exact phylogeny is still being decided. While there was evidence to give the Geomys arenarius its own taxon based on genetic and morphological uniqueness, some researchers believe it is actually a subspecies of Geomys bursarius because of the similarities between the two rodents.[3] No solid argument has been made to dispute the status of Geomys arenarius as its own species, but many researchers report that it is a subspecies, it has merely been separated by allopatric speciation.[2] When this species is given full species status, two subspecies are recognized, G. a arenarius and G. a. brevirostris.[4]

Ecology

Distribution and habitat

Desert pocket gophers mostly inhabit a narrow strip of land following the upper

Rio Grande Valley from Chihuahua, Mexico, then proceeding north and west into parts of New Mexico[2] and Texas[5] in the United States. Due to their restricted home range size, they are isolated from other members of Geomys.[6]

This species has a very patchy and disjointed distribution. The subspecies G. a. brevirostris is the more northern subspecies. The main G. a. brevirostris population is in

Gran Quivira and one in the Jornada del Muerto basin. G. a. arenarius is more widespread, living along the Rio Grande and its tributaries, in southern New Mexico, western Texas, and northern Chihuahua. The population in the Deming Plains near Columbus, New Mexico is possibly extinct.[1]

Desert pocket gophers prefer areas of well-traveled, loose soil, or sandy riverbanks; places that are easy to tunnel into and make a burrow.[2] They are commonly found near open water like rivers, ponds, or irrigation canals. The areas they inhabit are usually skirted by rocky plains or desert.[2] Their preferred climate is one that is arid and moisture deficient, where summers are long and hot and winters are short and moderate in temperature.[2]

In comparison to other gopher species, the desert pocket gopher-depending on the properties of the soil-can have a significant effect on the soils in the habitats it dwells in because it causes more disturbance from its digging than other species do.[7]

References

  1. ^
    doi:10.2305/IUCN.UK.2019-3.RLTS.T9054A22218401.en
    . Retrieved 16 November 2021.
  2. ^
    JSTOR 3503970
    .
  3. JSTOR 1383296
    .
  4. ^ Hafner, Mark (July 2016). Handbook of the Mammals of the World - Volume 6. Lynx Edicions.
  5. JSTOR 1380353
    .
  6. S2CID 6060373
    .
  7. doi:10.1016/j.jaridenv.2003.08.001
    .
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