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Title: Seasonal feeding on bark by gorillas: an unexpected keystone food?
Author(s): Rogers, M Elizabeth
Tutin, Caroline E G
Williamson, Elizabeth A
Parnell, Richard J
Voysey, Benedict C
Fernandez, Michel
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Editor(s): Thierry, B
Anderson, J R
Roeder, J J
Herrenschmidt, N
Citation: Rogers ME, Tutin CEG, Williamson EA, Parnell RJ, Voysey BC & Fernandez M (1994) Seasonal feeding on bark by gorillas: an unexpected keystone food?. In: Thierry B, Anderson JR, Roeder JJ & Herrenschmidt N (eds.) Current Primatology. Strasbourg, France: Université Louis Pasteur, pp. 37-43.
Keywords: Gorilla Food preferences
Primates Behaviour
Primates Food
Primates Ecology
Issue Date: 1994
Date Deposited: 1-Sep-2009
Abstract: First paragraph: There are a number of reports in the literature of primates feeding on the bark of trees, but bark has only occasionally been considered as a major food to be studied in its own right (e.g., Waser, 1977; Beeson, 1987; Norris, 1988). All the great apes feed on bark at certain times, and clearly have preferences as to which species they choose (e.g., Schaller, 1963; Jones & Sabater Pi. 1971; Casimir, 1975: Nishida, 1976; Goodall, 1977; Rodman, 1977; Sabater Pi, 1977, 1979). Evidence has been presented that bark feeding by chimpanzees (Pan troglodytes) and orangutans (Pongo pygmaeus) is a seasonal phenomenon related to scarcity of preferred fruits (Nishida, 1976; Rodman, 1977), and similar conclusions have been drawn from studies of blue monkeys (Cercopithecus mitis) living near plantations of exotic pines (Beeson, 1987; Maganga & Wright, 1992). Bark feeding is also well known in other mammals where, again, it often occurs seasonally (e.g., elephants, Wing & Buss, 1970; grey squirrels, Kenward & Parish, 1986).
Rights: The publisher has granted permission for use of this book chapter in this Repository. The chapter was first published in Current Primatology, Volume 1 by Université Louis Pasteur.

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