Sanzinia madagascariensis 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Reptilia Squamata Boidae

Scientific Name: Sanzinia madagascariensis (Duméril & Bibron, 1844)
Common Name(s):
English Madagascar Tree Boa, Sanzinia
French Boa des forits de Madagascar
Spanish Boa arborícola de Madagascar
Xiphosoma madagascariensis Duméril & Bibron, 1844
Taxonomic Notes: This species is represented by two subspecies that are morphologically similar but genetically distinct and possibly represent two different species (Glaw and Vences 2007).

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2011
Date Assessed: 2011-01-24
Assessor(s): Vences, M., Raxworthy, C.J., Rakotondravony, H. & Rafanomezantsoa, J.
Reviewer(s): Cox, N.A. & Bowles, P.
This species is listed as Least Concern, as it is widespread, present in heavily degraded habitats and it is not subject to any known or suspected threats.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This Madagascar Tree Boa is endemic to this island, where it is widespread. Sanzinia m. madagascariensis is widely distributed in the east where it occurs in a variety of different habitats (Glaw and Vences 2007). Sanzinia m. volontany is distributed in the west of Madagascar where it has been recorded from the extreme southeast to the extreme north. Both subspecies are therefore very widely distributed in Madagascar, and their combined extent of occurrence is estimated to be 286,664 km². The snake has been recorded from sea level to 1,300 m in elevation.
Countries occurrence:
Additional data:
Upper elevation limit (metres):1300
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This species is frequently encountered (Glaw and Vences 2007).
Current Population Trend:Stable
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:The Madagascar tree boa occurs in intact and degraded humid forest as well as plantations and near human settlements (Glaw and Vences 2007). Adults are mostly arboreal in the day and terrestrial at night. The natural diet consist of mammals but it may also feed on frogs and birds. This live-bearing snake gives birth to clutches of 1-19 neonates.
Continuing decline in area, extent and/or quality of habitat:No

Use and Trade [top]

Use and Trade: This attractive boa is smuggled out of the country in small numbers for the international pet trade.

Threats [top]

Major Threat(s): This is a widespread species that can survive in non-forested habitats and no major threats have been identified.

Conservation Actions [top]

Conservation Actions:

This species is on Appendix I of CITES and all international trade in live animals, or body parts, is prohibited. Due to its wide distribution, this species occurs in many protected areas in Madagascar. The taxonomic status of S. m. volontany needs to be clarified, as this may represent a full species, and it may be necessary to identify whether this snake is subject to any presently unknown threats.

Classifications [top]

1. Forest -> 1.5. Forest - Subtropical/Tropical Dry
suitability:Suitable  major importance:Yes
1. Forest -> 1.6. Forest - Subtropical/Tropical Moist Lowland
suitability:Suitable  major importance:Yes
3. Shrubland -> 3.6. Shrubland - Subtropical/Tropical Moist
suitability:Suitable  major importance:Yes
14. Artificial/Terrestrial -> 14.3. Artificial/Terrestrial - Plantations
suitability:Suitable  major importance:Yes
14. Artificial/Terrestrial -> 14.4. Artificial/Terrestrial - Rural Gardens
suitability:Suitable  major importance:Yes
14. Artificial/Terrestrial -> 14.6. Artificial/Terrestrial - Subtropical/Tropical Heavily Degraded Former Forest
suitability:Suitable  major importance:Yes

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 part of range
  Occur in at least one PA:Yes
  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:Yes
  Subject to any international management/trade controls:Yes
1. Research -> 1.1. Taxonomy
1. Research -> 1.5. Threats

♦  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.

Groombridge, B. (ed.) 1994. 1994 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland.

IUCN. 1990. IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK.

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

IUCN Conservation Monitoring Centre. 1986. 1986 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK.

IUCN Conservation Monitoring Centre. 1988. 1988 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK.

Citation: Vences, M., Raxworthy, C.J., Rakotondravony, H. & Rafanomezantsoa, J. 2011. Sanzinia madagascariensis. The IUCN Red List of Threatened Species 2011: e.T19900A9109451. . Downloaded on 26 September 2018.
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