Map_thumbnail_large_font

Allocebus trichotis

Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_offStatus_vu_onStatus_en_offStatus_cr_offStatus_ew_offStatus_ex_off

Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA MAMMALIA PRIMATES CHEIROGALEIDAE

Scientific Name: Allocebus trichotis
Species Authority: (Günther, 1875)
Common Name(s):
English Hairy-eared Dwarf Lemur
French Cheirogale Aux Oreilles Poilues, Allocèbe, Chirogale Aux Oreilles Poilues
Spanish Lemur Orejipeludo
Synonym(s):
Cheirogaleus trichotis Günther, 1875
Taxonomic Notes: The first specimens of this taxon were assigned to the genus Cheirogaleus when originally described by Günther in 1875, but distinct cranial and dentition features ultimately elevated the species to the sole representative of its own genus (Petter-Rousseaux and Petter 1967, Yoder 1996).

Assessment Information [top]

Red List Category & Criteria: Vulnerable A2c+3c+4c ver 3.1
Year Published: 2014
Date Assessed: 2012-07-11
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): Molur, S. & Schwitzer, C.
Facilitator/Compiler(s): Chiozza, F.
Justification:

Listed as Vulnerable as the species is suspected to have undergone a population decline of ≥30% over a period of 15 years (three generations), due primarily to continuing decline in area, extent and quality of habitat caused by slash-and-burn agriculture and logging. The species is also hunted locally. These causes have not ceased, and will to a large extent not be easily reversible. A population reduction of ≥30% is also suspected to be met in the future (over a period of three generations) due to the same causes. 

History:
2000 Endangered
1996 Critically Endangered
1994 Endangered (Groombridge 1994)
1990 Endangered (IUCN 1990)
1990 Endangered (IUCN 1990)
1988 Endangered (IUCN Conservation Monitoring Centre 1988)
1986 Endangered (IUCN Conservation Monitoring Centre 1986)

Geographic Range [top]

Range Description: This species is endemic to the island of Madagascar. By 1989, there had only been sightings on both sides of the Mananara River (Meier and Albignac 1991), and the species was thought to be restricted to lowland rainforests of that area. Since 1994, however, its presence has been documented in Marojejy National Park, Anjanaharibe-Sud Special Reserve, Masoala National Park, Mananara-Nord National Park, Zahamena Strict Nature Reserve and National Park, Analamazaotra Special Reserve, Maromizaha Forest, Forêt de Vohidrazana, the Vohimana Forest, 12 km east of Andisebe (N. Garbutt pers. comm.), Marotandrano Special Reserve (Mittermeier et al. 2008) and in the Ambatovy Classified Forest (E.E. Louis Jr. pers. obs.). Recorded from near sea-level to 1,000-1,600 m.
Countries:
Native:
Madagascar
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: Notably low densities with patchy distribution. Overall, sightings have been few (probably no more than a few dozen in total). The species appears to be rare wherever it occurs, with an estimated 11–25 individuals/km2 (Meier and Albignac 1991, Yoder 1996). Range-wide surveys are needed to assess population densities.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: Allocebus is typically found in intact moist forest, though it seems to tolerate moderate levels of human activity (Mittermeier et al. 2008). The diet consists of nectar, fruit, gums (primarily of Terminalia, Combretaceae), young leaves, honey, and insects (especially locusts). Spotted often in tangles of brush or lianas, it appears to forage in these areas at lower levels of the forest. It is nocturnal and has been observed in pairs (presumably male/female), with offspring, and singly. Groups of two to six nest in holes of larger trees and prefer to complement the nest with straw, even covering themselves with it in captivity (Meier and Albignac 1991). This species' home ranges appear to be up to 35 ha, which is larger compared to other Cheirogaleidae species. Oestrus is believed to occur at the beginning of the wet season (November–December), with births taking place in January and February (Meier and Albignac 1991). Gestation period and longevity are unknown.
Systems: Terrestrial

Use and Trade [top]

Use and Trade: This species is hunted for food.

Threats [top]

Major Threat(s): Threats to the survival of A. trichotis include destruction of its eastern rain forest habitat, primarily due to slash-and-burn agriculture, as well as some localized hunting and trapping (Yoder 1996).

Conservation Actions [top]

Conservation Actions: This species is listed on Appendix I of CITES. It is known to occur in five national parks (Mananara-Nord, Mantadia, Marojejy, Masoala, and Zahamena), the Zahamena Strict Nature Reserve, and three special reserves (Analamazaotra, Marotandrano and Anjanaharibe-Sud) and in the Ambatovy Classified Forest. Additional survey work to confirm density and biology and ecology would be highly desirable. This species is not recorded as being kept in captivity (ISIS 2009).

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. Allocebus trichotis. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 18 September 2014.
Disclaimer: To make use of this information, please check the <Terms of Use>.
Feedback: If you see any errors or have any questions or suggestions on what is shown on this page, please fill in the feedback form so that we can correct or extend the information provided