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Brookesia ramanantsoai 

Scope: Global
Language: English
Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_offStatus_vu_offStatus_en_onStatus_cr_offStatus_ew_offStatus_ex_off

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Reptilia Squamata Chamaeleonidae

Scientific Name: Brookesia ramanantsoai Brygoo & Domergue, 1975
Taxonomic Notes:

This species was synonymized with B. dentata by Raxworthy and Nussbaum (1995). This synonymy was questioned by Glaw et al. (1999), and the validity of this species was supported by Townsend et al. (2009)

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii) ver 3.1
Year Published: 2011
Date Assessed: 2011-01-25
Assessor(s): Jenkins, R.K.B., Andreone, F., Andriamazava, A., Anjeriniaina, M., Glaw, F., Rabibisoa, N., Rakotomalala, D., Randrianantoandro, J.C., Randrianiriana, J., Randrianizahana , H., Ratsoavina, F. & Robsomanitrandrasana, E.
Reviewer(s): Bowles, P. & Tolley, K.
Justification:
Listed as Endangered as the species has an extent of occurrence estimated at 679 km² in the eastern forests of Madagascar, within which it occurs as a severely fragmented population, and there is a continuing decline in the quality and extent of its forest habitat due to slash-and-burn agriculture and logging.

Geographic Range [top]

Range Description:

This chameleon is endemic to the island of Madagascar, where it has been confirmed from a few sites in the east at Andasibe and Mandraka (Glaw and Vences 2007), and the Angavo-Anjozorobe corridor (Raselimanana and Andriamampionona 2007). Records of B. dentata from various sites around Andasibe most probably refer to B. ramanantsoai, and are treated as such here. It is not known from sites above 1,300 m (Glaw et al. 1999). This chameleon has an estimated extent of occurrence of 679 km².

Countries occurrence:
Native:
Madagascar
Additional data:
Number of Locations:2Continuing decline in number of locations:Unknown
Extreme fluctuations in the number of locations:Unknown
Upper elevation limit (metres):1300
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:Based on recent evidence, the taxon referred to as B. minima by Jenkins et al. (2003) was probably B. ramanantsoai. Population densities between 4.5 ha -1 and 20.7 ha -1 were recorded in this study. Due to pressure on and the patchy distribution of the remaining forests in eastern Madagascar, the population is presumed to be both declining and severely fragmented.
Current Population Trend:Decreasing
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:

This species is associated with mid-elevation humid forest (Glaw and Vences 2007) but there has also been one record from a Eucalyptus plantation (Brygoo 1978). Jenkins et al. (2003) found the highest densities alongside relatively undisturbed forest rivers.

Systems:Terrestrial

Use and Trade [top]

Use and Trade: There is no evidence that this species has been traded.

Threats [top]

Major Threat(s): This species is threatened by the loss and degradation of humid forest due to slash-and-burn agriculture and logging (e.g., for construction materials and charcoal).

Conservation Actions [top]

Conservation Actions: The species occurs in Réserve Spéciale Analamazaotra and Parc National Mantadia. A large part of its known range, in the Angavo-Anjozorobe Corridor, has a positive conservation status and is being managed as a protected area. Research is needed to clarify the taxonomy of this and related species, to establish the limits of its distribution and to monitor population trends.

Citation: Jenkins, R.K.B., Andreone, F., Andriamazava, A., Anjeriniaina, M., Glaw, F., Rabibisoa, N., Rakotomalala, D., Randrianantoandro, J.C., Randrianiriana, J., Randrianizahana , H., Ratsoavina, F. & Robsomanitrandrasana, E. 2011. Brookesia ramanantsoai. The IUCN Red List of Threatened Species 2011: e.T172777A6915839. . Downloaded on 16 October 2018.
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