Brush Prairie Pocket gopher (Thomomys mazama ssp. douglasii)

Federal Register | Recovery | Critical Habitat | Conservation Plans | Petitions | Life History

Listing Status:   

General Information

The Brush Prairie pocket gopher is found in Clark County, Washington, where it is isolated from other subspecies, and facing the same issues as other Mazama pocket gopher subspecies. Adult Mazama pocket gophers (Thomomys mazama) are reddish brown to black above, and the underparts are lead colored and tipped with buffy. Lips, nose, and patches behind the ears are black; the wrists are white. Adults range from 175 to 273 millimeters (mm) (7 to 11 inches (in)) in total length, with tails that range from 45 to 85 mm (2 to 3 in) (Hall 1981). Mazama pocket gophers are morphologically similar to other species of pocket gophers that exploit a subterranean existence. They are stocky and tubular in shape, with short necks, powerful limbs, long claws, and tiny ears and eyes. Short, nearly hairless tails are highly sensitive and probably assist in navigation in tunnels. Pocket gophers tunnel and burrow with teeth and claws. Their “pockets” are external, fur-lined cheeks on either side of the mouth. These pockets are used to transport nesting material and carry plant cuttings to storage compartments. Pocket gophers’ diet includes a wide variety of plant material, including leafy vegetation, succulent roots, shoots, and tubers. Although as consumers of crop plants they are considered agricultural pests, in natural settings they play an ecological role by aerating soils and stimulating plant growth. In prairie ecosystems, pocket gopher activity is important in maintaining species richness and diversity. Pocket gophers rarely surface completely from their burrows, although they do disperse above ground. They are highly asocial and intolerant of other gophers. Each maintains its own burrow system, and occupancy by multiple individuals occurs only for brief periods during mating seasons and prior to weaning young. The mating system is probably polygynous and most likely based on female choice. The adult sex ratio is biased toward females, often as much as 4:1, though Witmer et al. (1996) reported a sex ratio of close to 1:1.

  • States/US Territories in which the Brush Prairie Pocket gopher, Wherever found is known to or is believed to occur:  Washington
  • US Counties in which the Brush Prairie Pocket gopher, Wherever found is known to or is believed to occur:  View All
 
Current Listing Status Summary
Status Date Listed Lead Region Where Listed
Pacific Region (Region 1) Wherever found

» Federal Register Documents

Federal Register Documents
Date Citation Page Title
2009-11-09 00:00:00.0 74 FR 57804 57878 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
2011-10-26 00:00:00.0 76 FR 66370 66439 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
2013-09-03 00:00:00.0 78 FR 54214 54218 Removing Five Subspecies of Mazama Pocket Gopher From the Candidate List for Endangered and Threatened Species
2012-11-21 00:00:00.0 77 FR 69993 70060 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
2010-11-10 00:00:00.0 75 FR 69222 69294 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions; Proposed Rule
2007-12-06 00:00:00.0 72 FR 69034 69106 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions; Proposed Rule
2012-12-11 00:00:00.0 77 FR 73769 73825 Listing Four Subspecies of Mazama Pocket Gopher and Designation of Critical Habitat: Proposed rule.
2008-12-10 00:00:00.0 73 FR 75176 75244 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions; Proposed Rule

» Recovery

No recovery information is available for the Brush Prairie Pocket gopher.

» Critical Habitat

No critical habitat rules have been published for the Brush Prairie Pocket gopher.

» Conservation Plans

No conservation plans have been created for Brush Prairie Pocket gopher.

» Petitions

» Life History

No Life History information has been entered into this system for this species.

» Other Resources

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ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

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