Comparative studies on vertical separation,foraging behavior and traveling mode of saddle-backed tamarins (Saguinus fuscicollis) and red-chested moustached tamarins (Saguinus labiatus) in Northern Bolivia |
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Authors: | Masaaki Yoneda |
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Institution: | (1) Hokkaido University, Japan;(2) Present address: Japan Wildlife Research Center, 3-39-12 Hongo, Bunkyo-ku, 113 Tokyo, Japan |
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Abstract: | The author made comparative studies on the ecology of saddle-backed tamarins (Saguinus fuscicollis) and red-chested moustached tamarins (S. labiatus) on the upper Amazon in northern Bolivia. The unit group of both species of monkeys was a family group composed of two to
seven individuals, but they often formed polyspecific associations comprising one such family group each. However, both species
preferred different layers of forest for foraging insects and traveling.S. fuscicollis mainly utilized the lower layer of the forest and foraged large-sized insects lurking in tree hollows, whereasS. labiatus mainly utilized the middle layer of the forest and foraged small-sized animals on branches. These differences were more clearly
noticeable in secondary forest than in primary forest. |
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