Hyperolius nimbae 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Hyperoliidae

Scientific Name: Hyperolius nimbae Laurent, 1958
Common Name(s):
English Mount Nimba Reed Frog
Taxonomic Source(s): Frost, D.R. 2016. Amphibian Species of the World: an Online Reference. Version 6.0 (31 March 2016). New York, USA. Available at: http://research.amnh.org/herpetology/amphibia/index.html.
Taxonomic Notes: This species is part of the Hyperolius tuberculatus Group within the H. viridiflavus complex (Schiøtz 1999).

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii) ver 3.1
Year Published: 2017
Date Assessed: 2016-07-07
Assessor(s): IUCN SSC Amphibian Specialist Group
Reviewer(s): Stuart, S.N.
Contributor(s): Schiøtz, A., Penner, J., Sandberger, L., Rödel , M.-O. & Kouame, N.
Facilitator/Compiler(s): Morris, E.J., Luedtke, J., Hobin, L., Lutz, M.
Listed as Endangered because its extent of occurrence (EOO) is 261 km2, it is known from a single threat-defined location, and there is ongoing decline in the extent and quality of its habitat.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is known from the lowlands on the southeastern foot of Mount Nimba in Côte d’Ivoire, where it was originally described. It was also found in Danané (M.-O. Rödel and N.G. Kouame pers. comm. June 2012), where it is probably known from less than 10 km2. It might also be found in Guinea and Liberia, however numerous surveys have been done in Guinea but the species has not yet been found there (M.-O. Rödel pers. comm. June 2012). Similarly, researchers searched for it in Liberia and were not able to detect it there (J. Penner pers. comm. June 2012). It is found around 300 m Asl. It is known from one threat-defined location and its EOO is 261 km2.
Countries occurrence:
Côte d'Ivoire
Additional data:
Number of Locations:1
Lower elevation limit (metres):300
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:It was once common and is now rare at all known sites; the most recent record is from Danipleu village of the Danané region in 2010 (N.G. Kouame pers. comm. May 2012). It was not recorded from its type locality of Nimba over five separate surveys during different seasons by Joseph Doumbia between 2008–2010 (L. Sandberger and M.-O. Rödel pers. comm. July 2016). However, it was recorded at the type locality during a separate survey in 2010 (N.G. Kouame unpubl. data). 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:This species lives in clearings in lowland forest, where it calls at the edge of large swamps. It presumably breeds in swamps.
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 main threat to this species is the establishment of rice fields and plantations. The species might be able to support some extent of habitat degradation and might actually profit from change to rice fields. However, the extent to which the species can adapt to the opening up of its habitat is unknown. Logging and construction for human settlement also occurs in the forest near its habitat and might therefore be a potential threat (M.-O. Rödel and N.G. Kouame pers. comm. June 2012).

Conservation Actions [top]

Conservation Actions: Conservation Actions
This species is not known from any protected areas. 

Conservation Needed
Habitat protection is required at sites where this species is known to occur.

Research Needed
More information is needed on this species' distribution, population status, natural history, and threats (M.-O. Rödel and N.G. Kouame pers. comm. June 2012).

Classifications [top]

1. Forest -> 1.6. Forest - Subtropical/Tropical Moist Lowland
suitability:Suitable season:resident major importance:Yes
5. Wetlands (inland) -> 5.4. Wetlands (inland) - Bogs, Marshes, Swamps, Fens, Peatlands
suitability:Suitable season:resident major importance:Yes
1. Land/water protection -> 1.1. Site/area protection
1. Land/water protection -> 1.2. Resource & habitat protection

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
  Occur in at least one PA:No
In-Place Species Management
In-Place Education
1. Residential & commercial development -> 1.1. Housing & urban areas
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

2. Agriculture & aquaculture -> 2.1. Annual & perennial non-timber crops -> 2.1.2. Small-holder farming
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

5. Biological resource use -> 5.3. Logging & wood harvesting -> 5.3.5. Motivation Unknown/Unrecorded
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

1. Research -> 1.2. Population size, distribution & trends
1. Research -> 1.3. Life history & ecology
1. Research -> 1.5. Threats

Bibliography [top]

IUCN. 2017. The IUCN Red List of Threatened Species. Version 2017-2. Available at: www.iucnredlist.org. (Accessed: 14 September 2017).

Laurent, R.F. 1958. La reserve naturelle integrale du Mont Nimba - Les rainettes du genre Hyperolius. Memoires de l'Institution Fondamental d'Afrique Noire 53: 275-299.

Laurent, R.F. 1976. Nouveaux commentaires sur la superespece Hyperolius viridiflavus (Anura). Annales Musée Royal de l'Afrique Centrale 8(213): 73-114.

Schiøtz, A. 1967. The treefrogs (Rhacophoridae) of West Africa. Spolia Zoologica Musei Hauniensi 25: 1-346.

Schiøtz, A. 1971. The superspecies Hyperolius viridiflavus (Anura). Videnskabelige Meddelelser fra Dansk Naturhistorisk Forening 134: 21-76.

Schiøtz, A. 1999. Treefrogs of Africa. Edition Chimaira, Frankfurt am Main.

Citation: IUCN SSC Amphibian Specialist Group. 2017. Hyperolius nimbae. In: . The IUCN Red List of Threatened Species 2017: e.T56170A16926587. . Downloaded on 24 February 2018.
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