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    Kalousová, Barbora Piel, Alexander K. Pomajbíková, Kateřina Modrý, David Stewart, Fiona A. and Petrželková, Klára J. 2014. Gastrointestinal Parasites of Savanna Chimpanzees (Pan troglodytes schweinfurthii) in Ugalla, Tanzania. International Journal of Primatology, Vol. 35, Issue. 2, p. 463.


    Harrison, Mark E. and Marshall, Andrew J. 2011. Strategies for the Use of Fallback Foods in Apes. International Journal of Primatology, Vol. 32, Issue. 3, p. 531.


    LABES, E. M. HEGGLIN, D. GRIMM, F. NURCAHYO, W. HARRISON, M. E. BASTIAN, M. L. and DEPLAZES, P. 2010. Intestinal parasites of endangered orangutans (Pongo pygmaeus) in Central and East Kalimantan, Borneo, Indonesia. Parasitology, Vol. 137, Issue. 01, p. 123.


    Seed, Amanda Emery, Nathan and Clayton, Nicola 2009. Intelligence in Corvids and Apes: A Case of Convergent Evolution?. Ethology, Vol. 115, Issue. 5, p. 401.


    Savini, Tommaso Boesch, Christophe and Reichard, Ulrich H. 2008. Home-range characteristics and the influence of seasonality on female reproduction in white-handed gibbons (Hylobates lar) at Khao Yai National Park, Thailand. American Journal of Physical Anthropology, Vol. 135, Issue. 1, p. 1.


    Moscovice, L.R. Issa, M.H. Petrzelkova, K.J. Keuler, N.S. Snowdon, C.T. and Huffman, M.A. 2007. Fruit availability, chimpanzee diet, and grouping patterns on Rubondo Island, Tanzania. American Journal of Primatology, Vol. 69, Issue. 5, p. 487.


    Marshall, Andrew J. and Wrangham, Richard W. 2007. Evolutionary Consequences of Fallback Foods. International Journal of Primatology, Vol. 28, Issue. 6, p. 1219.


    Remis, Melissa Jane 2006. The role of taste in food selection by African apes: implications for niche separation and overlap in tropical forests. Primates, Vol. 47, Issue. 1, p. 56.


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  • Print publication year: 2004
  • Online publication date: August 2009

12 - Diet and foraging of the great apes: ecological constraints on their social organizations and implications for their divergence

Summary

INTRODUCTION

Unlike the majority of the larger mammals, which are terrestrial herbivores, omnivores, or insectivores, nonhuman primates have created unique niches as arboreal insectivores, frugivores, or folivores. Primates now play important roles as fruit consumers and seed dispersers in tropical forests (Gautier–Hion et al. 1985; Terborgh 1986). However, food is still the primary limiting factor of primate populations because of its sparse distribution, physical protection (hard shells, spines, etc.), and toxic secondary compounds (Feeny 1976; Freeland & Janzen 1974; Milton 1984). Primates have evolved different strategies to cope with these dietary difficulties, and their specializations have influenced both anatomy and behavior.

Primates have evolved various features of gastrointestinal anatomy and the digestive system to cope with such dietary constraints. Leaves in particular are high in structural carbohydrates and are difficult to digest. Folivorous primates need more time to digest and absorb important food components to satisfy nutritional requirements. Specialization in gut morphology has raised the capacity of some primates to consume structural carbohydrates and detoxify secondary compounds (Kay & Davies 1994; Milton 1986). For example, the Colobinae have evolved a sacculated fermenting chamber in the stomach in which microbial fermentation precedes digestion and absorption (Bauchop & Martucci 1968; Chivers & Hladik 1980). Some secondary compounds are degraded during fermentation in the alkaline stomach environment before absorption. As an alternative strategy, a number of more folivorous primates, including howler monkeys, gorillas, bamboo lemurs, and sportive lemurs, have evolved an enlarged caecum or colon in which bacterial fermentation is activated (Stevens & Hume 1995).

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The Evolution of Thought
  • Online ISBN: 9780511542299
  • Book DOI: https://doi.org/10.1017/CBO9780511542299
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