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| Preuss's monkey | |
|---|---|
| Name | Preuss's monkey |
| Status | EN |
| Status system | IUCN3.1 |
| Genus | Allochrocebus |
| Species | preussi |
| Authority | (Matschie, 1898) |
| Range map | Preuss's monkey range.png |
Preuss's monkey is a West African primate in the genus Allochrocebus, recognized for its orangish brow and olive-grey pelage. It occurs in montane and lowland forests of Cameroon and neighboring countries and is listed as Endangered on the IUCN Red List. Taxonomists, field biologists, conservation organizations, and regional governments have been involved in research and protection efforts.
Described by Paul Matschie during the late 19th century, Preuss's monkey was placed within Cercopithecidae and later reassigned in systematic revisions influenced by molecular analyses led by researchers associated with institutions such as the Natural History Museum, Smithsonian Institution, and Zoological Society of London. Nomenclatural decisions cite type specimens held in museums in Berlin and specimens collected during expeditions linked to figures like Gustav Nachtigal and organizations such as the Royal Geographical Society. Etymology honors the German explorer and colonial administrator Paul Preuss, whose name appears in colonial-era literature and museum catalogues curated by the British Museum and Staatliche Museen zu Berlin.
Adults exhibit a medium-bodied cercopithecine morphology with a head–body length and tail length typical of forest guenons documented in comparative studies from the University of Cambridge, University of Oxford, and Max Planck Institute. Pelage coloration includes olive-grey dorsal fur, a distinctive orange-brown brow band, and contrasting facial markings noted in field guides published by the IUCN Primate Specialist Group and Fauna & Flora International. Sexual dimorphism is moderate, with males larger than females as reported in primatology monographs from the American Journal of Primatology and Cambridge University Press.
The species inhabits montane and lowland rainforests in parts of Cameroon, with range limits that have been mapped in collaborative surveys involving the World Wildlife Fund, Conservation International, and the African Wildlife Foundation. Sightings and specimen records in national parks such as Korup National Park, Mount Cameroon National Park, and Cross River National Park are documented in datasets maintained by UN Environment Programme and the Cameroon Ministry of Forestry and Wildlife. Elevational distribution overlaps with habitats studied for biodiversity by organizations like BirdLife International and the Global Environment Facility.
Group living dynamics resemble those of other guenons examined in behavioral studies at institutions including Princeton University, Yale University, and the Max Planck Institute for Evolutionary Anthropology. Social structure typically involves multimale–multifemale groups, intergroup interactions, and vocal repertoires analyzed using methods developed by researchers affiliated with Cornell Lab of Ornithology and University of California, Davis. Predation pressures from eagles and snakes, and parasite loads assessed by veterinary teams from the Royal Veterinary College and University of Liverpool, influence vigilance and ranging patterns described in ecological journals like Ecology Letters and Journal of Animal Ecology.
Omnivorous feeding habits combine frugivory, folivory, and insectivory, paralleling dietary studies from Duke University, University of Wisconsin–Madison, and Kyoto University. Foraging strategies exploit vertical forest strata surveyed in canopy research by the Smithsonian Tropical Research Institute and the New York Botanical Garden. Seasonal shifts in fruit availability documented by the Tropical Ecology Assessment and Monitoring (TEAM) Network drive dietary adaptations that are consistent with findings reported in Proceedings of the Royal Society B and Oecologia.
Reproductive parameters—interbirth interval, weaning age, and sexual maturity—reflect patterns reported in comparative primate life-history databases maintained by the Max Planck Society and the London School of Hygiene & Tropical Medicine. Birth seasonality corresponds with fruiting phenology studies from CIFOR and the Center for International Forestry Research. Longevity estimates in the wild are inferred from longitudinal studies by the Jane Goodall Institute and long-term population monitoring by local academic partners at the University of Yaoundé.
Classified as Endangered by the IUCN Red List, threats include habitat loss from logging and agriculture documented in reports by the Food and Agriculture Organization and the World Bank, as well as hunting pressures addressed in policy briefs by the Convention on International Trade in Endangered Species (CITES) and the United Nations Development Programme. Conservation measures promoted by non-governmental organizations such as Fauna & Flora International, Wildlife Conservation Society, and local NGOs involve protected area management, community-based conservation modeled after programs of the African Conservation Foundation, and capacity-building supported by the European Union and USAID. International research collaborations with universities and museums continue to inform species action plans coordinated with Cameroon’s Ministry of Environment and International Union for Conservation of Nature.
Category:Old World monkeys Category:Mammals of Cameroon