|Scientific Name:||Gephyromantis cornutus (Glaw & Vences, 1992)|
Mantidactylus cornutus Glaw & Vences, 1992
|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:||This species was revised by Glaw and Vences (2001) who described two sibling species: Gephyromantis tandroka and G. tschenki.|
|Red List Category & Criteria:||Vulnerable B1ab(iii) ver 3.1|
|Assessor(s):||IUCN SSC Amphibian Specialist Group|
|Contributor(s):||Glaw, F., Scherz, D. & Vences, M.|
|Facilitator/Compiler(s):||Luedtke, J. & Hobin, L.|
Listed as Vulnerable because its extent of occurrence (EOO) is 6,857 km2, there is ongoing decline in the extent and quality of habitat and it occurs in fewer than ten threat-defined locations.
|Previously published Red List assessments:|
|Range Description:||This species from east-central Madagascar is known with certainty only from the vicinity of Andasibe, An'Ala (Vohimana) and Vohidrazana. It is also known from Mandraka and Anjozorobe (F. Glaw unpubl. data November 2015). It is likely to occur more widely in the rainforests of eastern Madagascar and, while the northern limits of its range remain unknown, the southern limit of its range is not expected to be much further south than currently mapped because it is expected to be replaced by Gephyromantis tschenki (F. Glaw pers. comm. November 2015). Its recorded altitudinal range is 850-1,200 m asl, but it could possibly range higher. Its extent of occurrence (EOO) is 6,857 km2.|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||It is an abundant species, but due to ongoing declines in the quality and extent of the habitat, its population is suspected to be decreasing.|
|Current Population Trend:||Decreasing|
|Habitat and Ecology:||It is usually observed near streams and tiny trickles of water in rainforest, where it climbs on low vegetation. It is almost never found in disturbed areas. Its breeding is unknown, and could either be by direct or larval development.|
|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.|
The forest habitat of this species is receding due to subsistence agriculture, timber extraction, charcoal manufacture, invasive spread of eucalyptus, livestock grazing and expanding human settlements.
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).
It occurs in Andasibe-Mantadia National Park.
Improved protection and management of its habitat 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. 2016. Gephyromantis cornutus. The IUCN Red List of Threatened Species 2016: e.T57472A84170540.Downloaded on 16 December 2017.|