AMPHIBIAWEB
Breviceps namaquensis
Namaqua rain frog
family: Brevicipitidae
Conservation Status (definitions)
IUCN (Red List) Status Least Concern (LC)
CITES
Other International Status None
National Status None
Regional Status None

Country distribution from AmphibiaWeb's database: Namibia, South Africa

 

View distribution map using BerkeleyMapper.

   

From the Encyclopedia of Life account:

Distribution

B. namaquensis is endemic to South Africa, Lesotho, and Swaziland. It occurs in the predominantly winter-rainfall Namaqualand region of the Northern Cape and Western Cape provinces, from near the Gariep (Orange) River in the north to the Melkbos district in the south (Text from Minter et al., 2004, © SI/MAB Biodiversity Program).


Author: Braack,H.H.
License: http://creativecommons.org/licenses/by-nc/3.0/

Habitat and Ecology

B. namaquensis appears to favour scrub-covered, deep, and principally red sands in the Succulent Karoo Biome, specifically in the Strandveld and Lowland Succulent Karoo vegetation types. The harsh, brackish soils of the Knersvlakte are avoided. Unlike B. macrops, this species is not confined to coastal dunes and substantial populations were encountered in the interior (Text from Minter et al., 2004, © SI/MAB Biodiversity Program).


Author: Braack,H.H.
License: http://creativecommons.org/licenses/by-nc/3.0/

Associations

It was found that a snake near Elands Bay had disgorged a specimen of B. namaquensis. B. namaquensis occurs in sympatry with B. macrops. It is sympatric with B. rosei in the southern reaches of its range. Morphological and call differences between the three species easily separate them (Text from Minter et al., 2004, © SI/MAB Biodiversity Program).


Author: Braack,H.H.
License: http://creativecommons.org/licenses/by-nc/3.0/

Advertisement Call

Calling takes place mainly in winter and spring, during and following good rain. Sporadic calling has also been noted in early summer and autumn in the western Richtersveld and during periods of heavy mist following recent rain. Channing (2002) noted that males call from concealed positions beneath vegetation, in scrub-covered sandy areas. Advertisement calls of B. namaquensis, had an emphasized frequency of 1600 Hz rising to 2000 Hz. The calls were 160–165 ms in duration and were repeated at a rate of about one call per second. The calls of this species are higher pitched and much shorter than the calls of B. macrops (Text from Minter et al., 2004, © SI/MAB Biodiversity Program).


Author: Braack,H.H.
License: http://creativecommons.org/licenses/by-nc/3.0/

IUCN Red List Category and Justification of Conservation Status

In the southern half of its range, certain parts of its habitat have been exploited for agriculture and development, but in general this species is not under threat (Text from Minter et al., 2004, © SI/MAB Biodiversity Program).


Author: Braack,H.H.
License: http://creativecommons.org/licenses/by-nc/3.0/

Conservation Actions and Management

Because so little is known about B. namaquensis, it is recommended that further studies on its distribution and general biology be undertaken. Regular monitoring of protected populations is advisable and would certainly yield new and useful information (Text from Minter et al., 2004, © SI/MAB Biodiversity Program).


Author: Braack,H.H.
License: http://creativecommons.org/licenses/by-nc/3.0/