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Dissertation Research: Mechanism Governing Intraspecific Feeding Selectivity in Mantled Howler Monkeys Alouatta Palliata

Dissertation Research: Mechanism Governing Intraspecific Feeding Selectivity in Mantled Howler Monkeys Alouatta Palliata
论文研究:鬃毛吼猴 Alouatta Palliata 种内摄食选择性的机制
批准号:
9705856
负责人:
Carol Berman
金额:
$1.18万
依托单位:
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1997
资助国家:
美国
项目状态:
已结题
起止时间:
1997-07-15 至 1998-12-31

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中文摘要
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英文摘要
All animals, including humans, are selective about the food they eat, (i.e., they chose particular items for food from a suite of resources that are potentially available to them). Much is unknown about the cues and criteria that animals use to choose adequate diets. This is especially true among plant-eating primates with simple stomachs (e.g. howler monkeys), who must choose a diet that is not only adequate in energy, but that also has an adequate mix of nutrients and low levels of toxins and indigestible carbohydrates. Wild howlers eat from the leaves of particular trees but ignore those of other trees of the same species. This study aims to identify the factors that govern such intra-specific food choices. It is an initial step toward understanding factors that govern choices across many food species. Trees of the same species that are used and ignored will be compared for: 1) chemistry (nutrients, structural carbohydrates, and toxins), 2) location, shape and structure, 3) productivity, 4) abundance, and 6) danger of predation. An understanding of the criteria these primates use to choose adequate diets will contribute to a greater understanding of their ecological needs and of their complex behavioral adaptations to a forest environment.
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