Poiana Richardsonii, Central African Oyan

The IUCN Red List of Threatened Species™ ISSN 2307-8235 (online) IUCN 2008: T41704A45219609

Poiana richardsonii, Central African Oyan

Assessment by: Gaubert, P. & Do Linh San, E.

View on www.iucnredlist.org

Citation: Gaubert, P. & Do Linh San, E. 2015. Poiana richardsonii. The IUCN Red List of Threatened Species 2015: e.T41704A45219609. http://dx.doi.org/10.2305/IUCN.UK.2015- 4.RLTS.T41704A45219609.en

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THE IUCN RED LIST OF THREATENED SPECIES™ Taxonomy

Kingdom Phylum Class Order Family

Animalia Chordata Mammalia Carnivora Viverridae

Taxon Name: Poiana richardsonii (Thomson, 1842)

Common Name(s): • English: Central African Oyan, African Linsang, Central African Linsang, Richardson's Linsang • French: Poiane d'Afrique centrale Taxonomic Notes: Following Rosevear (1974), Wozencraft (2005) and Van Rompaey and Colyn (2013) this assessment does not include the subspecies Poiana richardsonii liberiensis, which is now considered a species on its own, namely West African Oyan (P. leightoni). Assessment Information

Red List Category & Criteria: Least Concern ver 3.1

Year Published: 2015

Date Assessed: February 28, 2015

Justification: Central African Oyan is listed as Least Concern because the species has a wide distribution range, is present in a region of relatively intact habitat, and appears to be quite common. It may be undergoing localised declines in some regions because of deforestation and hunting.

Previously Published Red List Assessments 2008 – Least Concern (LC) – http://dx.doi.org/10.2305/IUCN.UK.2008.RLTS.T41704A10536216.en

1996 – Lower Risk/least concern (LR/lc)

Geographic Range

Range Description: Central African Oyan is recorded from southern Cameroon, southern Central African Republic, Equatorial Guinea, Gabon, Congo Republic, and DR Congo east to the Rift Valley. It is also present on Bioko Island (Eisentraut 1973, Harrington et al. 2002).

Country Occurrence: Native: Cameroon; Central African Republic; Congo; Congo, The Democratic Republic of the; Equatorial Guinea (Bioko, Equatorial Guinea (mainland)); Gabon

© The IUCN Red List of Threatened Species: Poiana richardsonii – published in 2015. 2 http://dx.doi.org/10.2305/IUCN.UK.2015-4.RLTS.T41704A45219609.en Population Several decades ago, this species was reported as quite common in north-eastern DR Congo (Rahm and Christiaensen 1963) and not rare on Bioko I. (Eisentraut 1973). Charles-Dominique (1978) recorded a density of one individual/km² in primary forest in Gabon. Current Population Trend: Unknown

Habitat and Ecology (see Appendix for additional information) The species occurs in the canopy of lowland and montane forests (Van Rompaey and Colyn 2013). A set of recent surveys conducted throughout Gabon did not yield any record in savanna areas (Bahaa-el-din et al. 2013).

Systems: Terrestrial

Use and Trade This species is hunted and used as bushmeat.

Threats (see Appendix for additional information) There are no major threats to this species, but it may be undergoing localised declines because of forest loss and bushmeat hunting (Van Rompaey and Colyn 2013).

Conservation Actions (see Appendix for additional information) They presumably occur in several protected areas across their range. Credits

Assessor(s): Gaubert, P. & Do Linh San, E.

Reviewer(s): Duckworth, J.W. & Hoffmann, M.

Contributor(s): Hoffmann, M.

© The IUCN Red List of Threatened Species: Poiana richardsonii – published in 2015. 3 http://dx.doi.org/10.2305/IUCN.UK.2015-4.RLTS.T41704A45219609.en Bibliography Bahaa-el-din, L., Henschel, P., Aba’a, R., Abernethy, K., Bohm, T., Bout, N., Coad, L., Head, J., Inoue, E., Lahm, S., Lee, M. E., Maisels, F., Rabanal, L., Starkey, M., Taylor, G., Vanthomme, A., Nakashima, Y. and Hunter, L. 2013. Notes on the distribution and status of small carnivores in Gabon. Small Carnivore Conservation 48: 19-29.

Charles-Dominique, P. 1978. Ecologie et vie sociale de Nandinia binotata (carnivores, viverridés): Comparaison avec les prosimiens sympatriques du Gabon. La Terre et la Vie 32: 477-528.

Eisentraut, M. 1973. Die Wirbeltierfauna von Fernando Po und Westkamerun. Bonner Zoologische Monographien 3: 1-428.

IUCN. 2015. The IUCN Red List of Threatened Species. Version 2015-4. Available at: www.iucnredlist.org. (Accessed: 19 November 2015).

Rahm, U. and Christiaensen, A. 1963. Les mammifères de la région occidentale du Lac Kivu. Annales Musée Royal de l'Afrique Centrale, Sciences Zoologiques ser 8 118: 1-183.

Rosevear, D.R. 1974. The Carnivores of West Africa. Trustees of the British Museum (Natural History), London, UK.

Van Rompaey, H. and Colyn, M. 2013. Poiana richardsonii Central African Linsang (Central African Oyan). In: J. Kingdon and M. Hoffmann (eds), The Mammals of Africa. V. Carnivores, Pangolins, Equids and Rhinoceroses, pp. 253-254. Bloomsbury, London, UK.

Wozencraft, W.C. 2005. Order Carnivora. In: D.E. Wilson and D.M. Reeder (eds), Mammal Species of the World: A Taxonomic and Geographic Reference. Third Edition, pp. 532-628. Smithsonian Institution Press, Washington, DC, USA.

Citation Gaubert, P. & Do Linh San, E. 2015. Poiana richardsonii. The IUCN Red List of Threatened Species 2015: e.T41704A45219609. http://dx.doi.org/10.2305/IUCN.UK.2015-4.RLTS.T41704A45219609.en

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Habitats (http://www.iucnredlist.org/technical-documents/classification-schemes)

Major Season Suitability Habitat Importance? 1. Forest -> 1.6. Forest - Subtropical/Tropical Moist Lowland - Suitable -

1. Forest -> 1.9. Forest - Subtropical/Tropical Moist Montane - Suitable -

Threats (http://www.iucnredlist.org/technical-documents/classification-schemes)

Threat Timing Scope Severity Impact Score 5. Biological resource use -> 5.1. Hunting & trapping Ongoing Unknown Unknown Unknown terrestrial animals -> 5.1.1. Intentional use (species is the target) Stresses: 2. Species Stresses -> 2.1. Species mortality 5. Biological resource use -> 5.3. Logging & wood Ongoing Unknown Unknown Unknown harvesting -> 5.3.4. Unintentional effects: (large scale) Stresses: 1. Ecosystem stresses -> 1.1. Ecosystem conversion 1. Ecosystem stresses -> 1.2. Ecosystem degradation 2. Species Stresses -> 2.2. Species disturbance

Conservation Actions Needed (http://www.iucnredlist.org/technical-documents/classification-schemes)

Conservation Actions Needed 2. Land/water management -> 2.1. Site/area management

Research Needed (http://www.iucnredlist.org/technical-documents/classification-schemes)

Research Needed 1. Research -> 1.2. Population size, distribution & trends

1. Research -> 1.3. Life history & ecology

1. Research -> 1.5. Threats

Additional Data Fields

Habitats and Ecology Generation Length (years): 4

© The IUCN Red List of Threatened Species: Poiana richardsonii – published in 2015. 6 http://dx.doi.org/10.2305/IUCN.UK.2015-4.RLTS.T41704A45219609.en The IUCN Red List of Threatened Species™ ISSN 2307-8235 (online) IUCN 2008: T41704A45219609

The IUCN Red List Partnership

The IUCN Red List of Threatened Species™ is produced and managed by the IUCN Global Species Programme, the IUCN Species Survival Commission (SSC) and The IUCN Red List Partnership.

The IUCN Red List Partners are: BirdLife International; Botanic Gardens Conservation International; Conservation International; Microsoft; NatureServe; Royal Botanic Gardens, Kew; Sapienza University of Rome; Texas A&M University; Wildscreen; and Zoological Society of London.

THE IUCN RED LIST OF THREATENED SPECIES™