This species was discovered in 2008 at Ankerana in Ranomafana National Park, in eastern Madagascar, at 963 m asl (Bora et al. 2011). A recent tadpole survey in Ranomafana National Park revealed several additional sites, locally named Ambatolahy, Ambodiamontana, Bibiango, Fomponina and Vatoharanana (Bora et al. 2011). It has also been recorded at sites adjacent to the park (J.C. Riemann and C. Hutter pers. comm. November 2014) and could occur more widely in the immediate area, but for the purposes of this assessment its distribution is mapped to the boundaries of the park. Its extent of occurrence (EOO) is 685 km2.
Habitat and Ecology
The species occurs in rainforest in the rocky areas along small, slow-running streams (Bora et al. 2011), in which its tadpoles develop.
Due to ongoing decline in the quality and extent of its habitat, its population is suspected to be decreasing.
There is ongoing decline in the extent and quality of its forest habitat due to subsistence agriculture, timber extraction, charcoal manufacturing, invasive spread of eucalyptus, livestock grazing, regular burning to maintain cattle pasture, expanding human settlements, and a recent increase in artisanal mining.
Species in this genus have tested positive for Batrachochytrium dendrobatidis (Bd), however currently there have been no negative effects observed within amphibian populations in Madagascar suggesting the Bd strain has a low virulence level (Bletz et al. 2015).
The species occurs within Ranomafana National Park.
Continued and improved management within Ranomafana is required to protect its habitat, as there are some deforestation activities at the borders of the park.
Research is required to better understand the species' population size, distribution and trends. Further research is also essential to fully understand the distribution, origin, type and virulence of Bd lineages found in Madagascar (Bletz et al. 2015).
Red List Status
Listed as Endangered because its extent of occurrence (EOO) is 685 km2, individuals are known from fewer than five threat-defined locations, and there is ongoing decline in the quality and extent of its habitat outside the National Park and at its borders.
IUCN SSC Amphibian Specialist Group 2016. Mantidactylus paidroa. The IUCN Red List of Threatened Species 2016: e.T49570548A49570552. http://dx.doi.org/10.2305/IUCN.UK.2016-1.RLTS.T49570548A49570552.en