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Mantidactylus ambreensis 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Mantellidae

Scientific Name: Mantidactylus ambreensis
Species Authority: Mocquard, 1895
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.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2016
Date Assessed: 2016-05-17
Assessor(s): IUCN SSC Amphibian Specialist Group
Reviewer(s): Cox, N.A.
Contributor(s): Raxworthy, C.J., Glaw, F. & Scherz, M.D.
Facilitator/Compiler(s): Luedtke, J. & Hobin, L.
Justification:
Listed as Least Concern in view of its relatively wide distribution and presumed large population.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is known from several areas in northern and northwestern Madagascar, from Fôret d’Ambre Special Reserve and Montagne d'Ambre National Park (Raxworthy and Nussbaum 1994, D'Cruze et al. 2008) south to near Maevatenana, including forest fragments in the Tsarakibany area (Durkin et al. 2011). It is likely to occur more widely than currently known. It has been recorded at 200-1,150 m asl.
Countries occurrence:
Native:
Madagascar
Additional data:
Lower elevation limit (metres):200
Upper elevation limit (metres):1150
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:It is a locally abundant 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:This species inhabits pristine rainforest, along streams and rivers on the forest floor. But the species also shows a degree of resilience as it has also been recorded in highly fragmented forests, and degraded primary and secondary forests (M.D. Scherz pers. comm. March 2016). Its egg deposition site is not known, but tadpoles live in streams.
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 Fôret d’Ambre Special Reserve, Montagne d'Ambre National Park (D'Cruze et al. 2008), Tsaratanana Strict Nature Reserve, and Scherz et al. recorded it in the Mahimborondro corridor south of Tsaratanana (a proposed protected area).

Research Needed
Additional work is required on the species' population size, distribution and trends, and its ecological requirements. Further research is also essential to fully understand the distribution, origin, type and virulence of Bd lineages found in Madagascar (Bletz et al. 2015).

Classifications [top]

1. Forest -> 1.6. Forest - Subtropical/Tropical Moist Lowland
suitability:Suitable season:resident 
1. Forest -> 1.9. Forest - Subtropical/Tropical Moist Montane
suitability:Suitable season:resident 
5. Wetlands (inland) -> 5.1. Wetlands (inland) - Permanent Rivers/Streams/Creeks (includes waterfalls)
suitability:Suitable season:resident 

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
  Occur in at least one PA:Yes
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 -> 2.1.1. Shifting agriculture
♦ 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

2. Agriculture & aquaculture -> 2.3. Livestock farming & ranching -> 2.3.2. Small-holder grazing, ranching or 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

8. Invasive and other problematic species, genes & diseases -> 8.1. Invasive non-native/alien species/diseases -> 8.1.2. Named species
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

8. Invasive and other problematic species, genes & diseases -> 8.4. Problematic species/disease of unknown origin -> 8.4.2. Named species [ Batrachochytrium dendrobatidis ]
♦ timing:Unknown ♦ scope:Unknown ♦ severity:Unknown ⇒ Impact score:Unknown 
→ Stresses
  • 2. Species Stresses -> 2.1. Species mortality

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

Bibliography [top]

Bletz, M.C., Rosa, G.M., Andreone, F., Courtois, E.A., Schmeller, D.S., Rabibisoa, N.H.C, Rabemananjara, F.C.E., Raharivololoniaina, L., Vences, M., Weldon, C., Edmonds, D., Raxworthy, C.J., Harris, R.N., Fisher, M.C. and Crottini, A. 2015. Widespread presence of the pathogenic fungus Batrachochytrium dendrobatidis in wild amphibian communities in Madagascar. Scientific Reports 5(8633): 1-10.

D'Cruze, N., Köhler, J., Franzen, M. and Glaw, F. 2008. A conservation assessment of the amphibians and reptiles of the Foret d'Ambre Special Reserve, Madagascar. Madagascar Conservation and Development 3(1): 44-54.

Durkin, L., Steer, M.D. and Belle, E.M.S. 2011. Herpetological surveys of forest fragments between Montagne d'Ambre National Park and Ankarana Special Reserve, northern Madagascar. Herpetological Conservation and Biology 6(1): 114-126.

Glaw, F. and Vences, M. 1994. A Fieldguide to the Amphibians and Reptiles of Madagascar. Second Edition. Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn.

Glaw, F. and Vences, M. 2004. A preliminary review of cryptic diversity in frogs of the subgenus Ochthomantis based on mtDNA data and morphology (Anura, Mantellidae, Mantidactylus). Spixiana 27: 83-91.

Glaw, F. and Vences, M. 2007. A Fieldguide to the Amphibians and Reptiles of Madagascar. Third Edition. Vences & Glaw Verlag, Cologne.

IUCN. 2016. The IUCN Red List of Threatened Species. Version 2016-3. Available at: www.iucnredlist.org. (Accessed: 07 December 2016).

Raxworthy, C.J. and Nussbaum, R.A. 1994. A rainforest survey of the amphibians, reptiles, and small mammals at Montagne d'Ambre, Madagascar. Biological Conservation 69: 65-73.


Citation: IUCN SSC Amphibian Specialist Group. 2016. Mantidactylus ambreensis. The IUCN Red List of Threatened Species 2016: e.T57459A84169081. . Downloaded on 09 December 2016.
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