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Gephyromantis horridus 

Scope:Global
Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_offStatus_vu_offStatus_en_onStatus_cr_offStatus_ew_offStatus_ex_off

Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Mantellidae

Scientific Name: Gephyromantis horridus
Species Authority: (Boettger, 1880)
Common Name(s):
English Boettger's Grainy Frog
Synonym(s):
Arthroleptis horridus (Boettger, 1880)
Hemimantis horrida Boettger, 1880
Laurentomantis horrida (Boettger, 1880)
Mantidactylus horridus (Boettger, 1880)
Trachymantis horrida (Boettger, 1880)
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.
Taxonomic Notes: This species was recently revised by Vences et al. (2002).

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii) ver 3.1
Year Published: 2008
Date Assessed: 2008-01-01
Assessor(s): Andreone, F. & Glaw, F.
Reviewer(s): Stuart, S.N., Chanson, J.S. & Cox, N.A.
Justification:
Listed as Endangered because its Extent of Occurrence is less than 5,000 km2, its distribution is severely fragmented, and there is continuing decline in the extent and quality of its habitat in northern Madagascar.
Previously published Red List assessments:
2004 Endangered (EN)

Geographic Range [top]

Range Description: This species is known only from northern Madagascar, at Montagne d'Ambre, Tsaratanana and Nosy Be Island. Following Vences et al. (2002b) records from eastern Madagascar are not considered here. It has been recorded at 300-1,400m asl.
Countries occurrence:
Native:
Madagascar
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: It is a rare species, with very few records.
Current Population Trend: Decreasing
Additional data:
Population severely fragmented: No

Habitat and Ecology [top]

Habitat and Ecology: It inhabits lowland and montane rainforest, and is not found in disturbed areas. It probably breeds by direct development, but this requires confirmation.
Systems: Terrestrial

Threats [top]

Major Threat(s): The major threat is habitat loss due to subsistence agriculture, timber extraction, charcoal manufacture, the invasive spread of eucalyptus, livestock grazing, and expanding human settlements.

Conservation Actions [top]

Conservation Actions: It occurs in at least two protected areas: the Réserve Naturelle Intégrale du Tsaratanana and Parc National de Montagne d'Ambre.

Classifications [top]

1. Forest -> 1.6. Forest - Subtropical/Tropical Moist Lowland
suitability: Suitable  
1. Forest -> 1.9. Forest - Subtropical/Tropical Moist Montane
suitability: Suitable  
1. Land/water protection -> 1.1. Site/area protection
2. Land/water management -> 2.1. Site/area management

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
  Conservation sites identified:Yes, over entire range
  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 & other problematic species & genes -> 8.1. Invasive non-native/alien species -> 8.1.2. Named species
♦ 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
1. Research -> 1.6. Actions
3. Monitoring -> 3.1. Population trends

Bibliography [top]

Blommers-Schlösser, R.M.A. and Blanc, C.P. 1991. Amphibiens (première partie). Fauna de Madagascar: 1-379.

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

IUCN. 2008. 2008 IUCN Red List of Threatened Species. Available at: http://www.iucnredlist.org. (Accessed: 5 October 2008).

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: 65-73.

Vences, M., Glaw, F., Andreone, F., Jesu, R. and Schimmenti, G. 2002. Systematic revision of the enigmatic Malagasy broad-headed frogs (Laurentomantis Dubois, 1980), and their phylogenetic position within the endemic mantellid radiation of Madagascar. Contributions to Zoology: 191-212.


Citation: Andreone, F. & Glaw, F. 2008. Gephyromantis horridus. The IUCN Red List of Threatened Species 2008: e.T57489A11634993. . Downloaded on 02 May 2016.
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