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Lepilemur ankaranensis

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA MAMMALIA PRIMATES LEPILEMURIDAE

Scientific Name: Lepilemur ankaranensis
Species Authority: Rumpler & Albignac, 1975
Common Name(s):
English Ankarana Sportive Lemur
Taxonomic Notes: Formerly included within L. septentrionalis, but this last named species is now known only from forest north of the Irodo River.

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(i,iii,v) ver 3.1
Year Published: 2014
Date Assessed: 2013-07-11
Assessor(s): Andriaholinirina, N., Baden, A., Blanco, M., Chikhi, L., Cooke, A., Davies, N., Dolch, R., Donati, G., Ganzhorn, J., Golden, C., Groeneveld, L.F., Hapke, A., Irwin, M., Johnson, S., Kappeler, P., King, T., Lewis, R., Louis, E.E., Markolf, M., Mass, V., Mittermeier, R.A., Nichols, R., Patel, E., Rabarivola, C.J., Raharivololona, B., Rajaobelina, S., Rakotoarisoa, G., Rakotomanga, B., Rakotonanahary, J., Rakotondrainibe, H., Rakotondratsimba, G., Rakotondratsimba, M., Rakotonirina, L., Ralainasolo, F.B., Ralison, J., Ramahaleo, T., Ranaivoarisoa, J.F., Randrianahaleo, S.I., Randrianambinina, B., Randrianarimanana, L., Randrianasolo, H., Randriatahina, G., Rasamimananana, H., Rasolofoharivelo, T., Rasoloharijaona, S., Ratelolahy, F., Ratsimbazafy, J., Ratsimbazafy, N., Razafindraibe, H., Razafindramanana, J., Rowe, N., Salmona, J., Seiler, M., Volampeno, S., Wright, P., Youssouf, J., Zaonarivelo, J. & Zaramody, A.
Reviewer(s): Schwitzer, C. & Molur, S.
Facilitator/Compiler(s): Chiozza, F. & Clark, F.
Justification:
The extent of occurrence (EOO) of this species covers less than 1,880 km². This geographic range is severely fragmented and undergoing continuing decline in area, extent and quality of habitat. The number of mature individuals is also known to be in decline. Based on these premises, the species is listed as Endangered.

Geographic Range [top]

Range Description: This species is found in northern Madagascar in the forests of Ankarana, Andrafiamena, and Analamerana, from low elevations to 1,500 m. It appears to be sympatric with L. milanoii in the Andrafiamena Classified Forest. Field studies are needed to determine how these two species share the same forest. This is the only area where two Lepilemur species evidently occur in sympatry. The extent of occurrence (EOO) is estimated to be less than 1,880 km2.
Countries:
Native:
Madagascar
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: Population densities have been variously estimated between 150 and 550 individuals/km² (Ratsirarson and Rumpler 1988, Hawkins et al. 1990), the higher figures coming from more humid forest environments such as Ankarana. Population numbers are in decline due to habitat loss (Mittermeier et al. 2008).
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: Occurs in dry deciduous forests and also in moist evergreen forest. The natural history of this species remains poorly studied by comparison to that of sportive lemurs inhabiting western and southern Madagascar. Adults seem to remain solitary during nightly bouts of foraging for leaves. Tree holes and vine tangles are preferred daytime shelters. The Madagascar ground boa is known to prey upon sportive lemurs in their sleeping sites. A study of this species in degraded secondary forest fragments south of Montagne d’Ambre National Park found that the animals eat a high proportion of fruits during the rainy season when fruits are abundant, whereas they only eat leaves during the dry season. The fruits of five plant families were consumed: Moraceae, Verbenaceae, Rubiaceae, Pittosporaceae, and one that was not identified. The species has also been observed to feed on latex (Mittermeier et al. 2008 and references therein).
Systems: Terrestrial

Use and Trade [top]

Use and Trade: This species is hunted for food. Hunting has become more serious in recent years, with the appearance of large numbers of itinerant sapphire miners in the Ankarana region.

Threats [top]

Major Threat(s): The major threats to this species are forest loss, particularly for charcoal (such as in Analamerana and Andrafiamena), and hunting (exacerbated by mining in the region for sapphires).

Conservation Actions [top]

Conservation Actions: This species is listed on Appendix I of CITES. The species is found in Montagne d’Ambre National Park and in three special reserves (Analamerana, Ankarana, and Fôret d’Ambre), as well as in the Andrafiamena Classified Forest (Mittermeier et al. 2008). Improved management and protection of Analamerana is urgently required, and long-term scientific presence within the existing reserve is encouraged. Andrafiamena should be included within a protected area.

Citation: Andriaholinirina, N., Baden, A., Blanco, M., Chikhi, L., Cooke, A., Davies, N., Dolch, R., Donati, G., Ganzhorn, J., Golden, C., Groeneveld, L.F., Hapke, A., Irwin, M., Johnson, S., Kappeler, P., King, T., Lewis, R., Louis, E.E., Markolf, M., Mass, V., Mittermeier, R.A., Nichols, R., Patel, E., Rabarivola, C.J., Raharivololona, B., Rajaobelina, S., Rakotoarisoa, G., Rakotomanga, B., Rakotonanahary, J., Rakotondrainibe, H., Rakotondratsimba, G., Rakotondratsimba, M., Rakotonirina, L., Ralainasolo, F.B., Ralison, J., Ramahaleo, T., Ranaivoarisoa, J.F., Randrianahaleo, S.I., Randrianambinina, B., Randrianarimanana, L., Randrianasolo, H., Randriatahina, G., Rasamimananana, H., Rasolofoharivelo, T., Rasoloharijaona, S., Ratelolahy, F., Ratsimbazafy, J., Ratsimbazafy, N., Razafindraibe, H., Razafindramanana, J., Rowe, N., Salmona, J., Seiler, M., Volampeno, S., Wright, P., Youssouf, J., Zaonarivelo, J. & Zaramody, A. 2014. Lepilemur ankaranensis. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 24 October 2014.
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