Bathyergus janetta 


Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Rodentia Bathyergidae

Scientific Name: Bathyergus janetta
Species Authority: Thomas & Schwann, 1904
Common Name(s):
English Namaqua Dune Mole Rat
Taxonomic Notes: Ellerman et al. (1953) regarded this taxon as being only subspecifically distinct from the Cape Dune Mole-rat, Bathyergus suillus, but most authors regard it as a distinct species.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Maree, S., Faulkes, C. & Griffin, M.
Reviewer(s): Amori, G. (Small Nonvolant Mammal Red List Authority) & Cox, N. (Global Mammal Assessment Team)
Listed as Least Concern because, Although the extent of occurrence is less than 20,000 km², and the potential impact of diamond mining remains to be quantified, there is, at present, no reason to believe that the species is declining, and its presence in areas entirely restricted to public access (and with extremely high protection).
Previously published Red List assessments:
2004 Least Concern (LC)
1996 Lower Risk/near threatened (LR/nt)
1994 Vulnerable (V)

Geographic Range [top]

Range Description: This species has been recorded from southern Namibia and western South Africa. There are three isolated populations, one from Alexander Bay, Orange River, the second from Port Nolloth to Groen Rivier, and the third from Steinkopf to Kamieskroon and the Kamiesberg (South Africa). The species rarely occurs above 300 m asl.
Countries occurrence:
Namibia; South Africa
Upper elevation limit (metres): 300
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: Population densities of this species are greater inland, with up to 44 individuals per sq km.
Current Population Trend: Unknown
Additional data:
Population severely fragmented: No

Habitat and Ecology [top]

Habitat and Ecology: This species is found in areas of coastal sand dunes, and consolidated alluvial soils with mean annual rainfall less than 400 mm. It is a subterranean and largely solitary species. Between two and seven young are born after a gestation period of 52 days. The species has a generation length of two years.
Systems: Terrestrial

Threats [top]

Major Threat(s): The species is threatened by some loss of habitat through diamond mining operations in the coastal range. Although mining is a threat, public access to these regions is entirely restricted.

Conservation Actions [top]

Conservation Actions: The species occurs within Sperrgebiet (Namibia), which, while lacking government protection, has a very high level of protection. Long-term population monitoring of this species is needed.

Classifications [top]

3. Shrubland -> 3.5. Shrubland - Subtropical/Tropical Dry
suitability: Suitable  
2. Land/water management -> 2.1. Site/area management

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
  Conservation sites identified:Yes, over entire range
In-Place Species Management
In-Place Education
3. Energy production & mining -> 3.2. Mining & quarrying
♦ timing: Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

3. Monitoring -> 3.1. Population trends

Bibliography [top]

Ellerman, J.R., Morrison-Scott, T.C.S. and Hayman, R.W. 1953. Southern African Mammals 1758 to 1951: A Reclassification. British Museum (Natural History), London, UK.

Honeycutt, R. L., Allard, M. W., Edwards, S. V. and Schlitter, D. A. 1991. Systematics and evolution of the family Bathyergidae. In: P. W. Sherm, J. U. M. Jarvis and R. D. Alexander (eds), The Biology of the Naked Mole Rat, pp. 45-65. Princeton University Press, Princeton, New Jersey, USA.

Ingram, C. M., Burda, H. and Honeycutt, R. L. 2004. Molecular phylogenetics and taxonomy of the African mole-rats, genus Cryptomys and the new genus Coetomys Gray, 1864. Molecular Phylogenetics and Evolution 31(3): 997-1014.

Janecek, L. L., Honeycutt, R. L., Rautenbach, I. L., Erasmus, B. H., Reig, S. and Schlitter, D. A. 1992. Allozyme Variation and Systematics of African Mole-rats (Rodentia: Bathyergidae). Biochemical Systematics and Ecology 20: 401-416.

Rathbun, G.B. (subeditor). 2005. Macroscelidea. In: J.D. Skinner and C.T. Chimimba (eds), The Mammals of the Southern African Subregion, 3rd edition, pp. 22-34. Cambridge University Press, Cambridge, UK.

Citation: Maree, S., Faulkes, C. & Griffin, M. 2008. Bathyergus janetta. The IUCN Red List of Threatened Species 2008: e.T2619A9462605. . Downloaded on 25 May 2016.
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