M 39 mm, F 40-45 mm. Inner and outer dorsolateral ridge present but indistinct. No heel spines. Two distinct and elevated interocular tubercles. Colouration variable, usually no light stripe along upper lip (Glaw and Vences 2007).
Distribution and Habitat
Country distribution from AmphibiaWeb's database: Madagascar
Marojejy Massif in north-eastern Madagascar (Glaw and Vences 2007), and possibly from Tsaratanana (one specimen has been collected and requires confirmation). This species has been observed between 700-1400 m (Raxworthy and Andreone 2008). It is usually located near streams and tiny trickles of water in rainforest, where it can be found climbing on low vegetation (Raxworthy and Andreone 2008). It is not found in disturbed areas (Raxworthy and Andreone 2008).
Life History, Abundance, Activity, and Special Behaviors
Habits: Males call at night from positions 1-2 m high in the vegetation close to streams, in relatively high-elevation rainforest (Glaw and Vences 2007).
Calls: Usually a single unharmonious note, repeated after longer intervals of 1-3 seconds (Glaw and Vences 2007).
Trends and Threats
This species is listed as vulnerable because it is known from fewer than five locations. It occurs within a protected area, the Parc National de Marojejy. However, habitat is being lost due to agriculture and grazing, logging, charcoal manufacture, the invasion and spread of eucalyptus, and expanding human settlement (Raxworthy and Andreone 2008).
Possible reasons for amphibian decline
General habitat alteration and loss
Habitat modification from deforestation, or logging related activities
Intensified agriculture or grazing
Subtle changes to necessary specialized habitat
Taken with permission from Glaw and Vences (2007).
Glaw, F., and Vences, M. (2007). Field Guide to the Amphibians and Reptiles of Madagascar. Third Edition. Vences and Glaw Verlag, Köln.
Raxworthy, C. and Andreone, F. (2008). Gephyromantis tandroka. In: IUCN 2008. 2008 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 20 March 2009.
Written by Miguel Vences and Frank Glaw (m.vences AT tu-bs.de), Assistant Professor and Curator of Vertebrates at the Institute for Biodiversity and Ecosystem Dynamics in the Zoological Museum at the University of Amsterdam
First submitted 2009-03-20
Edited by Catherine Aguilar (2009-04-07)
Species Account Citation: AmphibiaWeb 2009 Gephyromantis tandroka <http://amphibiaweb.org/species/6172> University of California, Berkeley, CA, USA. Accessed Oct 16, 2017.
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Citation: AmphibiaWeb. 2017. <http://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 16 Oct 2017.
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