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Blommersia angolafa 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Mantellidae

Scientific Name: Blommersia angolafa Andreone, Rosa, Noël, Crottini, Vences & Raxworthy, 2010
Taxonomic Source(s): Frost, D.R. 2014. Amphibian Species of the World: an Online Reference. Version 6 (27 January 2014). New York, USA. Available at: http://research.amnh.org/herpetology/amphibia/index.html. (Accessed: 27 January 2014).

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2015
Date Assessed: 2014-11-23
Assessor(s): IUCN SSC Amphibian Specialist Group
Reviewer(s): Stuart, S.N.
Contributor(s): Hutter, C., Glaw, F., Riemann, J. & Scherz, M.
Facilitator/Compiler(s): Luedtke, J.
Justification:
Listed as Least Concern because of its relatively large range. However, it is known from five threat-defined locations, there is ongoing decline in its specialized phytotelmic habitat of Dypsis palms causing its population to decrease.

Geographic Range [top]

Range Description:This species is currently known from four localities (Reserve NI Betampona, Zahamena NP, Masoala NP and Reserve Speciale d’Ambatovaky) in northeast regions of Madagascar (Glaw and Vences 2007) between 90 and 508 m asl (Andreone et al. 2010). It is suspected to also occur at other rainforest sites that fall within this elevational and altitudinal range, such as Makiraand Mananara-Nord (Andreone et al. 2010). Its extent of occurrence (EOO) is 34,586 km2 and it is thought to occur in 5 threat-defined locations - the four parks and reserves, and the rest of its range.
Countries occurrence:
Native:
Madagascar
Additional data:
Number of Locations:5
Lower elevation limit (metres):90
Upper elevation limit (metres):508
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:

As this species relies on the presence of associated Dypsis palm species, which are in decline, it is inferred that this species' population is decreasing.

Current Population Trend:Decreasing
Additional data:

Habitat and Ecology [top]

Habitat and Ecology:It is found in both primary and secondary rainforest where Dypsis palms occur. The biology of this species requires it to coexist with an appropriate Dypsis palm: it is specialized to living and breeding in the phytotelmic habitat of water accumulated in fallen dead prophylls and leaf sheaths of at least 3 Dypsis palm species, where eggs are laid and complete larval development occurs (Andreone et al. 2010).
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): The primary threat to this species is habitat loss by removal of associated Dypsis palms (Andreone et al. 2010) by selective logging, fire, harvesting for palm heart and plant and seed collection by palm enthusiasts (Byg and Balslev 2001, 2003; Dransfield and Beentje 2006).

Conservation Actions [top]

Conservation Actions: Conservation Actions
This species occurs in RNI Betampoana, Zahamena NP, Masoala NP and Reserve Speciale d’Ambatovaky. In order to ensure the persistence of this species, current management practices within these protected areas should be both maintained and improved. An example of improvement in management practices is the creation of a protected forest corridor between Betampona and Zahamena, which would help to connect the subpopulations in each of those protected areas, which are currently surrounded by unprotected areas with a high intensity of forest destruction (Andreone et al. 2010).


Research Needed
In order to inform the need for further conservation action, more research is needed into its ecology, population trends, and the extent of its range. Further monitoring of the exploitation of associated Dypsis palms would also be beneficial for the conservation of this species.

Citation: IUCN SSC Amphibian Specialist Group. 2015. Blommersia angolafa. The IUCN Red List of Threatened Species 2015: e.T48964577A48964595. . Downloaded on 14 August 2018.
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