Tracheloptychus petersi 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Reptilia Squamata Gerrhosauridae

Scientific Name: Tracheloptychus petersi Grandidier, 1869
Taxonomic Notes:

Assessment Information [top]

Red List Category & Criteria: Vulnerable B1ab(iii) ver 3.1
Year Published: 2011
Date Assessed: 2011-01-26
Assessor(s): Rakotondravony, H., Raselimanana, A., Ramanamanjato, J.-B. & Raxworthy, C.J.
Reviewer(s): Bowles, P. & Cox, N.A.
Listed as Vulnerable, as the species has a small extent of occurrence of about 7,345 km², with continuing decline in extent and quality of habitat due to various threats. The number of locations where this species occurs is uncertain, but is expected to be between 5 and 10.

Geographic Range [top]

Range Description:

This species is endemic to Madagascar where it is found in a few localities in the southwest of the island (Glaw and Vences 2007). Reported sites for this species include Itampolo, Tranomaro, Behara, Ifotaka, and Beheloka, between 15 and 225 m elevation (Raselimanana et al. 2005), and at Mikea between 50 to 70 m (Raselimanana 2008), as well as at Ankatrakatra Forest near Tampolo West (H. Rakotondravony pers. comm January 2011). The lizard's extent of occurrence is estimated to be 7,345 km².

Countries occurrence:
Additional data:
Lower elevation limit (metres):15
Upper elevation limit (metres):225
Range Map:Click here to open the map viewer and explore range.

Population [top]


This is a locally common species, although the population of this dry forest lizard may be declining as a result of land clearance for agriculture.

Current Population Trend:Decreasing
Additional data:
Population severely fragmented:Unknown

Habitat and Ecology [top]

Habitat and Ecology:

This ground-dwelling, diurnal lizard inhabits arid, sandy areas (Glaw and Vences 2007). It is sympatric with Tracheloptychus madagascariensis in part of its range. It has been recorded from dry forest, both pristine and degraded.

Continuing decline in area, extent and/or quality of habitat:Yes

Use and Trade [top]

Use and Trade:

This species is occasionally traded.

Threats [top]

Major Threat(s): The habitat is being cleared for agriculture (rice and maize), there is logging for charcoal production, and there is also ilmenite mining.

Conservation Actions [top]

Conservation Actions: This species occurs in a number of sites that are managed for conservation, but not in any proclaimed protected areas. There is a proposed protected area near Mikea. Research is needed to verify population trends and to establish the degree to which this species can withstand forest loss, and it may be necessary to manage areas of dry forest for the benefit of this species.

Classifications [top]

1. Forest -> 1.5. Forest - Subtropical/Tropical Dry
suitability:Suitable  major importance:Yes
13. Marine Coastal/Supratidal -> 13.3. Marine Coastal/Supratidal - Coastal Sand Dunes
suitability:Suitable  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
  Action Recovery plan:No
  Systematic monitoring scheme:No
In-Place Land/Water Protection and Management
  Conservation sites identified:Yes, over entire range
  Occur in at least one PA:No
  Area based regional management plan:No
In-Place Species Management
  Harvest management plan:No
  Successfully reintroduced or introduced beningly:No
  Subject to ex-situ conservation:No
In-Place Education
  Subject to recent education and awareness programmes:No
  Included in international legislation:No
  Subject to any international management/trade controls:No
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

3. Energy production & mining -> 3.2. Mining & quarrying
♦ 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 -> 5.3.3. Unintentional effects: (subsistence/small scale) [harvest]
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

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

♦  Pets/display animals, horticulture
 International : ✓ 

Bibliography [top]

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

IUCN. 2011. IUCN Red List of Threatened Species (ver. 2011.2). Available at: (Accessed: 10 November 2011).

Raselimanana, A.P. 2008. Herpétofaune des forêts sèches malgaches. Malagasy Nature 1: 46-75.

Raselimanana, A.P., Noonan, B., Karanth, K.P., Gauthier, J. and Yoder, A.D. 2009. Phylogeny and evolution of Malagasy plated lizards. Molecular Phylogenetics and Evolution 50: 336-344.

Raselimanana, A.P., Raherilalao, M.J., Soarimalala, V. and Ralison, J. 2005. Faune de vertebres des zones forestieres des regions du sudouest et du sud de Madagascar : Diversité, distribution, menaces et conservation.

Citation: Rakotondravony, H., Raselimanana, A., Ramanamanjato, J.-B. & Raxworthy, C.J. 2011. Tracheloptychus petersi. The IUCN Red List of Threatened Species 2011: e.T172745A6910073. . Downloaded on 19 June 2018.
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