Habitat and Ecology
Habitat and Ecology
C. namaquense occurs in the winter-rainfall regions of Namaqualand with Succulent Karoo vegetation. The annual precipitation is low, averaging 150–300 mm (Schulze 1997). This species shelters under stones and exfoliating granite or in cracks during the dry season, emerging in wet periods to feed and reproduce (Text from Minter et al., 2004, © SI/MAB Biodiversity Program).
Males engage in territorial disputes when other males approach too closely. The only known predators are large toads (Text from Minter et al., 2004, © SI/MAB Biodiversity Program).
Life History and Behavior
Calling has been recorded after rains in July, August, September, October, November, March and April. Little is known of the breeding biology of this species. Males call from beneath vegetation or from exposed positions at or near the water’s edge. The advertisement call is a repeated, nasal bleat, frequently followed by a clicking territorial call. Calling is antiphonal, producing an almost continuous chorus (Text from Minter et al., 2004, © SI/MAB Biodiversity Program).
Breeding takes place in temporary pools formed in eroded “tanks” in granitic bedrock, rocky streambeds, permanent pools and seeps, but the species has also adapted well to breeding in man-made dams, quarries and borrow-pits. Breeding is opportunistic and correlated with sparse rainfall events (Text from Minter et al., 2004, © SI/MAB Biodiversity Program).
IUCN Red List Assessment
Red List Category
Red List Criteria
- 2004Least Concern
IUCN Red List Category and Justification of Conservation Status
C. namaquense does not appear to be threatened. It is known to occur in two protected areas: the Richtersveld Contractual National Park and the Goegap Nature Reserve (Text from Minter et al., 2004, © SI/MAB Biodiversity Program).
The Namaqua caco or Namaqua dainty frog (Cacosternum namaquense) is a species of frog in the Petropedetidae family found in Namibia and South Africa. Its natural habitats are subtropical or tropical dry shrubland, intermittent rivers, intermittent freshwater marshes, freshwater springs, and rocky areas. It is threatened by habitat loss.
- Channing, A., Minter, L. & Scott, E. 2004. Cacosternum namaquense. 2006 IUCN Red List of Threatened Species. Downloaded on 23 July 2007.
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