| Kingdom | Phylum | Class | Order | Family |
|---|---|---|---|---|
| ANIMALIA | CHORDATA | AMPHIBIA | ANURA | MANTELLIDAE |
| Scientific Name: | Gephyromantis silvanus |
| Species Authority: | (Vences, Glaw and Andreone, 1997) |
| Synonym/s: |
Mantidactylus silvanus Vences, Glaw and Andreone, 1997
|
| Red List Category & Criteria: | Endangered B1ab(iii)+2ab(iii) ver 3.1 |
| Year Published: | 2004 |
| Assessor/s: | Franco Andreone, Miguel Vences |
| Reviewer/s: | Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson and Neil Cox) |
|
Justification: Listed as Endangered, because its Extent of Occurrence is less than 5,000 km2 and its Area of Occupancy is less than 500 km2, its distribution is severely fragmented, and there is a continuing decline in the extent and quality of its forest habitat. |
|
| Range Description: | This species is known only from the island of Nosy Mangabe and the nearby mainland along the coast of the Antongila Bay. It might occur more widely on the Masoala Peninsula. It occurs from sea level up to 400m asl. |
| Countries: |
Native:
Madagascar
|
| Range Map: | Click here to open the map viewer and explore range. |
| Population: | It is a rare species. |
| Population Trend: |
Decreasing
|
| Habitat and Ecology: | It lives on low vegetation near streams and brooks, and among boulders and in caves, in pristine rainforest; it cannot survive in altered habitats. The breeding biology is unknown, and it could reproduce by either direct or larval development. |
| Systems: | Terrestrial; Freshwater |
| Major Threat(s): | The major threat is habitat loss due to subsistence agriculture, timber extraction, charcoal manufacture, spread of invasive eucalyptus, livestock grazing, and expanding human settlements. |
| Conservation Actions: | It occurs in the Réserve Spéciale de Nosy Mangabe. Although not yet confirmed from Parc National de Masoala, it is likely to occur there as well. |
| Citation: | Franco Andreone, Miguel Vences 2004. Gephyromantis silvanus. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 25 May 2012. |
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