|Scientific Name:||Mantidactylus madecassus (Millot & Guibé, 1950)|
Rhacophorus madecassus Millot & Guibé, 1950
|Taxonomic Source(s):||Frost, D.R. 2015. Amphibian Species of the World: an Online Reference. Version 6.0. New York, USA. Available at: http://research.amnh.org/herpetology/amphibia/index.html.|
|Taxonomic Notes:||The taxonomic distinction between Mantidactylus madecassus and M. pauliani has recently been corroborated on the basis of genetic studies (M. Vences pers. comm.).|
|Red List Category & Criteria:||Endangered B1ab(iii) ver 3.1|
|Assessor(s):||IUCN SSC Amphibian Specialist Group|
|Contributor(s):||Glaw, F., Scherz, M.D. & Vences, M.|
Listed as Endangered in view of its extent of occurrence (EOO) of less than 1,290 km2, with all individuals in five or fewer threat-defined locations, and a continuing decline in the extent and quality of its habitat.
|Previously published Red List assessments:|
|Range Description:||This species is known only from Andringitra in south-eastern Madagascar, where the species is restricted to elevations between 1,500–2,500 m Asl. It has been found at about ten localities in Andringitra. Its EOO is 1,290 km2.|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||It is a rare species. Due to ongoing decline in the extent and quality of habitat, the population is suspected to be decreasing.|
|Current Population Trend:||Decreasing|
|Habitat and Ecology:||This species lives in clear, rocky streams in forest or above the tree line. It is not dependent on forest and is usually found outside forest in rocky landscapes. It is largely aquatic and breeds in the slower-flowing parts of streams.|
|Continuing decline in area, extent and/or quality of habitat:||Yes|
|Movement patterns:||Not a Migrant|
|Use and Trade:||There are no records of this species being utilized.|
Its habitat is probably being impacted by overgrazing and fires (which are likely to be too frequent).
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). High-altitude species are known to be more vulnerable to Bd, so this species is more likely than some others to be at risk on Madagascar (F. Glaw pers. comm. May 2016).
This species occurs in Andringitra National Park.
Ongoing and improved protection of high-elevation streams is required.
Further research is essential to fully understand the distribution, origin, type and virulence of Bd lineages found in Madagascar (Bletz et al. 2015).
|Citation:||IUCN SSC Amphibian Specialist Group. 2017. Mantidactylus madecassus. The IUCN Red List of Threatened Species 2017: e.T57498A84173634.Downloaded on 17 October 2017.|
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