Yellow-faced pocket gopher

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Yellow-faced pocket gopher
Cratogeomys castanops.jpg
At Alpine, Texas, US
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Family: Geomyidae
Genus: Cratogeomys
Species:
C. castanops
Binomial name
Cratogeomys castanops
(Baird, 1852)
Subspecies

See text

Map of the distribution of Cratogeomys Castanops.gif
Range of Cratogeomys castanops
Synonyms
  • Pappogeomys castanops

The yellow-faced pocket gopher (Cratogeomys castanops) is a species of pocket gopher that is native to shortgrass prairies in the south-western United States and northern Mexico. It is the species that lives north of the Southern Coahuila Filter-Barrier (SCFB). [2] Among the different species, the yellow-faced pocket gopher has a small to medium-sized skull. [3] The fossil of this genus was recorded from the pre-Pleistocene Benson Beds of Arizona. [4]

Contents

The yellow-faced pocket gopher has a yellowish-brown coat, a short tail, and one deep groove down the anterior middle of each incisor.

Form and function

Adults of C. castanops in Texas begin to molt in August and continue through March. The new pelage was found to be thicker, but had no change in color [5] In Kansas, semiannual molts in adults have been reported: 1. Molt from winter to summer early in the spring and 2. Molt in autumn in September and October [6]

There is sexual dimorphism in the yellow-faced pocket gophers; the males are larger than the females. The males of all genera of pocket gophers continue to grow after attaining sexual maturity, but females grow little after reaching sexual maturity. [7]

Ontogeny and reproduction

The reproductive activity of yellow-faced pocket gophers start in November and increases to a peak in March and/or April [8] During mating and copulation, the males emits low guttural squeaks throughout exploratory activities, then the male bites the female when body contact is made. [5] When young animals are old enough to leave the nest, they travel about maternal burrows. Then, when the young are nearly full grown, they disperse from the parental burrow. [9]

Behavior

Researchers have seen a swimming ability in yellow-faced pocket gophers. [10] However, this genus of pocket gophers are less durable than other genera in water, perhaps because of the greater bulk (of its body) that inhibits its endurance.

Most of the foraging is done from the burrow system the yellow-faced pocket gophers create, pulling plants into the burrow by their roots. [9] The burrow system consists of tunnels dug by the gophers averaging 75.8m in length and 10 to 132 cm in depth. [11]

Ecology

Yellow-faced pocket gophers usually inhabit deep sandy or silty soils that are relatively free from rocks. [9] However, where Geomys (another genus of pocket gophers) is present, Cratogeomys is restricted to "denser, shallower, sometimes rocket soils." [12] [13] Research in Kansas showed that tracts that had no gophers occupying it consisted largely of areas with fine-textured soils that are planted with crops. The crops (corn, wheat, and grain sorghum) were harvested and disked annually along with the roadside ditches adjacent to the cropland. It was concluded that pocket gophers are not able to inhabit these lands because land-use practices have destabilized the habitats, eliminating both refuge and dispersal corridors. [14]

Yellow-faced pocket gophers are preyed on by small carnivorous mammals and large hawks and owls. [7] [15]

Subspecies

There are currently 18 identified subspecies [16] of Cratogeomys castanops:

Related Research Articles

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

Pocket gophers, commonly referred to simply as gophers, are burrowing rodents of the family Geomyidae. The roughly 41 species are all endemic to North and Central America. They are commonly known for their extensive tunneling activities and their ability to destroy farms and gardens.

<span class="mw-page-title-main">Smooth-toothed pocket gopher</span> Genus of mammals

The smooth-toothed pocket gophers, genus Thomomys, are so called because they are among the only pocket gophers without grooves on their incisors. They are also called the western pocket gophers because they are distributed in western North America. They are considered distinct enough from other pocket gophers to be recognized as a separate subfamily or tribe.

<span class="mw-page-title-main">Botta's pocket gopher</span> Species of mammal

Botta's pocket gopher is a pocket gopher native to western North America. It is also known in some areas as valley pocket gopher, particularly in California. Both the specific and common names of this species honor Paul-Émile Botta, a naturalist and archaeologist who collected mammals in California in 1827 and 1828.

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

The hispid pocket mouse is a large pocket mouse native to the Great Plains region of North America. It is a member of the genus Chaetodipus.

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

The desert pocket gopher is a species of rodent in the family Geomyidae. It is found in the state of Chihuahua in Mexico and in Texas and New Mexico in the United States.

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

The plains pocket gopher is one of 35 species of pocket gophers, so named in reference to their externally located, fur-lined cheek pouches. They are burrowing animals, found in grasslands and agricultural land across the Great Plains of North America, from Manitoba to Texas. Pocket gophers are the most highly fossorial rodents found in North America.

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

The Texas pocket gopher is a species of rodent in the family Geomyidae. It is found in Tamaulipas in Mexico and in Texas in the United States.

The tropical pocket gopher is a species of rodent in the family Geomyidae. It is endemic to Mexico. Its natural habitat is hot deserts. It is threatened by habitat loss.

Heterogeomys is a genus of rodent in the family Geomyidae, found in Mexico, Central America and Colombia. Heterogeomys are a small genus of rodents commonly known as pocket gophers, though the term applies to all genera within the family Geomyidae. The name pocket gopher was earned for this family because of their fur lined cheek pouches that can be used for carrying food. These pouches can also be turned inside out. Species of Heterogeomys are regarded as pests, one of less than 5% of rodent species classified as pests, and the history of man's attempts to control their populations reaches back into Mayan times. Despite some efforts to the contrary, populations of Heterogeomys seem to be on a general upwards trend. Furthermore, all of the species of Heterogeomys are considered to be of Least Concern in the World Status Key.

Buller's pocket gopher is a species of gopher that is endemic to Mexico.

<span class="mw-page-title-main">Smoky pocket gopher</span> Mexican Rodent

The smoky pocket gopher is a species of rodent in the family Geomyidae. It is endemic to the Trans-Mexican Volcanic Belt in Mexico, in the states of Jalisco, Colima, Michoacan, Guanajuato, Queretaro, Hidalgo, Estado de Mexico, and the Mexican Federal District. Its natural habitat is subtropical or tropical dry lowland grassland. Molecular phylogenetics has revealed that this species also includes the animals formerly separated as C. gymnurus, C. neglectus, C. tylorhinus and C. zinseri.

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

Merriam's pocket gopher is a species of rodent in the family Geomyidae. It is endemic to Mexico, where it is found in the area of the Valley of Mexico and the Valley of Toluca at elevations from 1800 to 4000 m. Its favored habitats are the Zacatonal grassland and temperate pine-oak woodlands, as well as farmland and rangeland. Its karyotype has 2n = 36 and FN = 68.

<span class="mw-page-title-main">Southern pocket gopher</span> Species of rodent in the family Geomyidae, found in Mexico and the United States

The southern pocket gopher is a species of rodent in the family Geomyidae. It is found in Mexico and the United States, usually in high altitude grassland and shrubland. It feeds on plant material and has an extensive burrow above which is a large heap of earth on the surface of the ground.

The Michoacan pocket gopher is a species of rodent in the family Geomyidae. It is monotypic within the genus Zygogeomys. It is endemic to Mexico where its natural habitat is temperate, high-altitude forests. Its numbers are declining and it is listed by the IUCN as "endangered".

<span class="mw-page-title-main">Tamaulipan matorral</span> Xeric shrubland ecoregion in Nuevo León and Tamaulipas, Mexico

The Tamaulipan matorral is an ecoregion in the deserts and xeric shrublands biome on the eastern slopes of the Sierra Madre Oriental range in northeastern Mexico. It is a transitional ecoregion between the Tamaulipan mezquital and the Sierra Madre Oriental pine-oak forests to the west and the Veracruz moist forests to the south.

<i>Cratogeomys</i> Genus of rodents

Cratogeomys is a genus of rodent in the family Geomyidae. It was previously considered a subgenus of Pappogeomys. All species are distributed in Mexico and the Southwest United States, with some species being found in both countries.

Goldman's pocket gopher, is a species of rodent in the pocket gopher family. It is distributed throughout northern Mexico. It was formerly considered a subspecies of the yellow-faced pocket gopher. It is named after Edward Alphonso Goldman, who collected the holotype of this species.

<span class="mw-page-title-main">Oriental Basin pocket gopher</span> Species of rodent

The Oriental Basin pocket gopher is a species of pocket gopher which is endemic to Mexico. It was first described in 1895 by Clinton Hart Merriam. It was considered to be a subspecies of Merriam's pocket gopher in the late 20th and early 21st century but has been reinstated as its own species. The IUCN Red List has evaluated it to be of least concern.

The Perote pocket gopher, or Cofre de Perote pocket gopher, is a species of pocket gopher in the family Geomyidae.

References

  1. Cassola, F. (2017) [errata version of 2016 assessment]. "Cratogeomys castanops". IUCN Red List of Threatened Species . 2016: e.T16025A115131062. doi: 10.2305/IUCN.UK.2016-3.RLTS.T16025A22216913.en . Retrieved 11 November 2022. Database entry includes a brief justification of why this species is of least concern
  2. Hafner, David J.; Hafner, Mark S.; Hasty, Gerald L.; Spradling, Theresa A.; Demastes, James W. (2008). "Evolutionary Relationships of Pocket Gophers (Cratogeomys castanops Species Group) of the Mexican Altiplano". Journal of Mammalogy. 89: 190–208. doi: 10.1644/07-MAMM-A-001.1 .
  3. Russell, R. J. , 1968b. Revision of pocket gophers of the genus Pappogeomys. Univ. Kansas Publ., Mus. Nat. Hist., 16:581-776
  4. Russell, R. J., 1969. Intraspecific population structure of the species Pappogeomys castanops. Pp. 337-371, in Contributions in mammalogy (J. K. Jones, Jr., ed.). Misc. Publ. Mus. Nat. Hist., Univ. Kansas, 51:1-428
  5. 1 2 Ikenberry, R. D. 1964. Reproductive studies of the Mexican pocket gopher, Cratogeomys castanops perplanus. Unpubl. M.S. thesis, Texas Tech Univ., Lubbock, v + 47pp.
  6. Birney, E. C., J.K. Jones, Jr., and D. M. Mortimer. 1971. The yellow-faced pocket gopher, Pappogeomys castanops, in Kansas. Trans. Kansas Acad. Sci., 73:368-375
  7. 1 2 Chase, J. D., W.E. Howard, and J. T. Rosenberry. 1982. Pocket gophers, Geomyidae. Pp. 239-255, in Wild mammals of North America: biology, management, and economics (J.A. Chapman and G.A. Feldhamer, eds.). Johns Hopkins Univ. Press, Baltimore, xiii + 1147 pp.
  8. Smolen, M. J., J. J. Genoways, and R. J. Baker. 1980. demographic and reproductive parameters of the yellow-cheeked pocket gopher (Pappogeomys castanops). J. Mammal., 61:224-236
  9. 1 2 3 Bailey, V. 1932. Mammals of New Mexico. N. Amer. Fauna, 53:1-412, 22 pls.
  10. Hickman, G. C. 1977b. Swimming behavior in representative species of the three genera of North American geomyids. Southwestern Nat., 21:531-538.
  11. Hickman, G. C. 1977a. Burrow system structure of Pappogeomys castanops (Geomyidae) in Lubbock County, Texas. Amer. Midland Nat., 97:50-58
  12. Birney, E. C., J.K. Jones, Jr., and D. M. Mortimer. 1971. The yellow-faced pocket gopher, Pappogeomys castanops, in Kansas. Trans. Kansas Acad. Sci., 73:368-375
  13. Findley, J. S. 1987. The natural history of New Mexican mammals. Univ. New Mexico Press, Albuquerque, xii + 164 ppl, 16 unnumbered pls.
  14. Hoffman, Justin D.; Choate, Jerry R.; Channell, Rob (2007). "Effects of Land Use and Soil Texture on Distributions of Pocket Gophers in Kansas". The Southwestern Naturalist. 52 (2): 296–301. doi:10.1894/0038-4909(2007)52[296:EOLUAS]2.0.CO;2. ISSN   0038-4909.
  15. Jones, J. K., Jr., D.M. Armstrong, and J. R. Choate. 1985. Guide to mammals of the plains states. Univ. Nebraska Press, Lincoln, xix + 371 pp.
  16. Patton, J. L. (2005). "Family Geomyidae". 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. 859. ISBN   978-0-8018-8221-0. OCLC   62265494.