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The black-mantled tamarin, ''Saguinus nigricollis'', is a species of tamarin from the northwestern Amazon in far western Brazil, southeastern Colombia and northeastern Peru. It has often included the Graells's tamarin as a subspecies (in which case the distribution extends into eastern Ecuador),〔 but differs from that species in having reddish-orange rump and thighs.〔Rylands, Mittermeier, Coimbra-Filho, Heymann, de la Torre, Silva Jr., Kierulff, Noronha and Röhe (2008). ''Marmosets and Tamarins: Pocket Identification Guide.'' Conservation International. ISBN 978-1-934151-20-4〕 The two are often said to be sympatric in Colombia (a major argument for treating them as separate species), though the accuracy of such reports has been questioned.〔Defler, T. (2004). ''Primates of Colombia.'' Conservation International. ISBN 1-881173-83-6〕 The body length is 15–28 cm. The tail length is 27–42 cm. Family groups consisting of a male, a female and 1 or 2 young live in a defined territory - the female marks branches on the boundaries of the territory with secretions of her anal glands and urine. The female gives birth to 2 young after a gestation of 140 to 150 days. It mainly eats insects, leaves, and fruit. ==References== ;Notes ;Source * Macmillan Illustrated Animal Encyclopedia 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「Black-mantled tamarin」の詳細全文を読む スポンサード リンク
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