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Tana River mangabey : ウィキペディア英語版 | Tana River mangabey
The Tana River mangabey (''Cercocebus galeritus'') is a highly endangered species of primate in the Cercopithecidae family. Some authorities have included the taxa ''agilis'' and ''sanjei'' as subspecies of this species, while others award these full species status.〔 It is endemic to riverine forest patches along the lower Tana River in southeastern Kenya. It is threatened by habitat loss and degradation, which has increased in recent years. This species was, together with the equally endangered Tana River red colobus, the main reason for the creation of the Tana River Primate Reserve in 1978,〔(【引用サイトリンク】title=Kenya Wildlife Service – Tana River Primate Reserve )〕 but human encroachment within this reserve continues.〔(Kenya’s rare monkey species threatened with extinction . ) African Conservation Foundation. Accessed 2008-07-20〕 Recently, it has been suggested that 20,000 hectares of the Tana River Delta should be transformed into sugarcane plantations, but this has, temporarily at least, been stopped by the High Court of Kenya.〔(Tana gets temporary reprieve. ) BirdLife International. Accessed 2008-07-20〕 == Physical description ==
The Tana River mangabey is a medium-sized primate with a long semi-prehensile tail, yellow-brown coat, and a center part on the crown of the head with long, dark fur. The species has white eyelids that contrast to its darker face like other ''Cercocebus'' species. This contrast in the eyelids is believed to be used as part of the species complex communication system. The species also has specialized dental morphology for feeding on hard nuts, seeds, and fruits.
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