AMPHIBIAWEB
Vandijkophrynus robinsoni
Paradise Toad
family: Bufonidae

© 2010 Sebastian Wolf (1 of 8)
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: South Africa

 

View distribution map using BerkeleyMapper.

   

From the Encyclopedia of Life account:

Morphology

Amplexus is axillary. Breeding males develop a black nuptial pad on the thumb (Text from Minter et al., 2004, © SI/MAB Biodiversity Program).


Author: W.R. Branch and H.H. Braack
License: http://creativecommons.org/licenses/by-nc/3.0/

Comparisons

It is distinguished from B. gariepensis by its characteristic vocalization and various morphological features, including: poorly developed parotoid glands, weakly developed tarsal fold, small tympanum, relatively smooth skin, and large eyes (Text from Minter et al., 2004, © SI/MAB Biodiversity Program).


Author: Zimkus, Breda
License: http://creativecommons.org/licenses/by-nc/3.0/

Habitat and Ecology

V. robinsoni is a terrestrial, partially rupicolous species that shelters in rock cracks and holes in rocky areas close to permanent or seasonal water sources (Text from Minter et al., 2004, © SI/MAB Biodiversity Program).


Author: W.R. Branch and H.H. Braack
License: http://creativecommons.org/licenses/by-nc/3.0/

Associations

V. robinsoni occurs in sympatry with B. gariepensis, and they are closely related (Cunningham and Cherry 2000; Text from Minter et al., 2004, © SI/MAB Biodiversity Program).

V. robinsoni tested positive for Batrachochytrium dendrobatidis (fungus that causes chytridiomycosis) in Northern Cape, South Africa in Springbok in 2004 (Weldon, 2005).


Authors: Bergmann, Travis; W.R. Branch and H.H. Braack
License: http://creativecommons.org/licenses/by-nc/3.0/

Advertisement Call

Calls and amplexus have been observed on several occasions in the presence of metamorphosing tadpoles, indicating that the breeding season is prolonged, or, at least, that it does not consist of a single “explosive” event. Single males have not been observed attempting to displace amplectant males and this, together with the larger female size, suggests a reproductive strategy involving selection by females. Some 2000 eggs are laid in strings in water, attached loosely to vegetation or other objects. Breeding takes place in small pools, and seasonal streams and rivers, larger rivers are avoided (Text from Minter et al., 2004, © SI/MAB Biodiversity Program).


Author: W.R. Branch and H.H. Braack
License: http://creativecommons.org/licenses/by-nc/3.0/

Tadpole morphology

Tadpole development is rapid. Mortality amongst eggs and tadpoles are high because they are found in rapidly drying ponds (Text from Minter et al., 2004, © SI/MAB Biodiversity Program).


Author: W.R. Branch and H.H. Braack
License: http://creativecommons.org/licenses/by-nc/3.0/

IUCN Red List Category and Justification of Conservation Status

The species is not considered to be threatened and it has been assigned the status of Least Concern (Text from Minter et al., 2004, © SI/MAB Biodiversity Program).


Author: W.R. Branch and H.H. Braack
License: http://creativecommons.org/licenses/by-nc/3.0/