Mantidactylus biporus 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Mantellidae

Scientific Name: Mantidactylus biporus (Boulenger, 1889)
Common Name(s):
English Two-pore Madagascar Frog
Mantidactylus brauni Ahl, 1929
Rana bipora Boulenger, 1889
Taxonomic Source(s): Frost, D.R. 2015. Amphibian Species of the World: an Online Reference. Version 6.0. New York, USA. Available at:
Taxonomic Notes: This species is probably a complex of at least five cryptic species (M. Vences and F. Andreone pers. comm.). Mantidactylus tricinctus was removed from the synonymy of this species by Glaw and Vences (1999).

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2016
Date Assessed: 2016-05-16
Assessor(s): IUCN SSC Amphibian Specialist Group
Reviewer(s): Cox, N.A.
Contributor(s): Vallan, D. & Glaw, F.
Facilitator/Compiler(s): Hobin, L.
Listed as Least Concern in view of its wide distribution, tolerance of a degree of habitat modification and presumed large population.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This is a widely distributed species in northern and eastern Madagascar, with one record in central Madagascar. Two isolated records from west central and south-central Madagascar need to be confirmed. It occurs between 0-1,600 m asl. The map for this species is provisional as this is an unresolved species complex (F. Glaw pers. comm. May 2016).
Countries occurrence:
Additional data:
Upper elevation limit (metres):1600
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:It is a locally common species. Due to ongoing decline in the extent and quality of habitat, the population is suspected to be decreasing.
Current Population Trend:Decreasing
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:It is a streamside species in rainforest, including degraded forest and open areas adjacent to forest. It is often associated with wetlands, bogs, stagnant water and seeps, but not fast-flowing streams. It breeds in permanent and temporary pools and in slow-moving water. Knoll et al. (2007) collected one of the benthic larvae "from a puddle beside a footpath on muddy ground".
Systems:Terrestrial; Freshwater
Continuing decline in area, extent and/or quality of habitat:Yes
Movement patterns:Not a Migrant

Use and Trade [top]

Use and Trade: There are no records of this species being utilized.

Threats [top]

Major Threat(s): Its forest habitat is receding due to subsistence agriculture, timber extraction, charcoal manufacture, and 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).

Conservation Actions [top]

Conservation Actions: Conservation Actions
This species occurs in numerous protected areas throughout the eastern rainforest belt.

Research Needed
The taxonomy of this species complex is in need of revision (F. Glaw pers. comm. May 2016). Further research is also 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. Mantidactylus biporus. The IUCN Red List of Threatened Species 2016: e.T57465A84169728. . Downloaded on 22 July 2018.
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