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The bongo (''Tragelaphus eurycerus'') is a herbivorous, mostly nocturnal forest ungulate. It is among the largest of the African forest antelope species. Bongos are characterised by a striking reddish-brown coat, black and white markings, white-yellow stripes and long slightly spiralled horns. Indeed, bongos are the only tragelaphid in which both sexes have horns. They have a complex social interaction and are found in African dense forest mosaics. The western or lowland bongo, ''T. e. eurycerus'', faces an ongoing population decline, and the IUCN Antelope Specialist Group considers it to be Near Threatened on the conservation status scale. The eastern or mountain bongo, ''T. e. isaaci'', of Kenya, has a coat even more vibrant than that of ''T. e. eurycerus''. The mountain bongo is only found in the wild in one remote region of central Kenya. This bongo is classified by the IUCN Antelope Specialist Group as Critically Endangered, with more specimens in captivity than in the wild. In 2000, the Association of Zoos and Aquariums in the USA (AZA) upgraded the bongo to a Species Survival Plan participant and in 2006 added the Bongo Restoration to Mount Kenya Project to its list of the Top Ten Wildlife Conservation Success Stories of the year. However, in 2013, it seems, these successes have been negated with reports of possibly only 100 mountain bongos left in the wild due to logging and poaching. ==Taxonomy== The bongo belongs to the genus ''Tragelaphus'', which includes the sitatunga (''T. spekeii''), the nyala (''T. angasii''), the bushbuck (''T. scriptus''), the mountain nyala (''T. buxtoni''), the lesser kudu (''T. imberbis''), and the greater kudu (''T. strepsiceros''). Bongos are further classified into two subspecies: ''T. e. eurycerus'', the lowland or western bongo, and the far rarer ''T. e. isaaci'', the mountain or eastern bongo, restricted to the mountains of Kenya only. The eastern bongo is larger and heavier than the western bongo. Two other subspecies are described from West and Central Africa, but taxonomic clarification is required. They have been observed to live up to 19 years.〔Spinage, C.A. (1986) ''The Natural History of Antelopes''. New York: Facts on File Publications.〕 The generic name ''Tragelaphus'' is derived from the Greek words ''trago'' (a male goat) and ''elaphos'' (a deer), in combination referring to "an antelope". The specific name'' eurycerus'' originated from the fusion of ''eurus'' (broad, widespread) and ''keras'' (an animal's horn). "Bongo" is derived from a West African native name. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Bongo (antelope)」の詳細全文を読む スポンサード リンク
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