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Descriptive Attribute Value(s)
Grouping Ape
Observation Number (Open Context) 15
Subspecies Gorilla gorilla gorilla
Common name Western gorilla
Period of study December 1983 - December 1989
Country or Region Gabon
Method Faecal analysis, feeding traces, direct observation
Wet season October - mid-December, mid-February - May
Dry season June - September, mid-December - mid-February
Environment Mature evergreen tropical forest
Altitude (m) 250 - 600 (Appendices - Great Ape Societies)
% Fruit 45.2
% Leaves 26.9
% Flowers 1.6
% Seeds 7.5
% Pith & stems 8.6
% Roots 1.1
% Invertebrates 1.6
% Bark and cambium 4.3
% Other 3.2
Fruit availability peak January - March (Tutin & Fernandez 1993)
Low fruit availability mid-June - mid-September (Tutin & Fernandez 1993)
Percentages Based on average diet composition
Notes Data taken from Table 1
Reference Williamson et al., 1990
Full Reference
Williamson, E. A., Tutin, C. E. G., Rogers, M. E. and Fernandez, M. (1990). Composition of the diet of Lowland Gorillas at Lopé in Gabon. American Journal of Primatology, 21: 265-277. [Available at:]
Suggested Citation

Rebecca Haywood. (2020) "Ape 15 from Africa/Gabon/Station d'Etudes des Gorilles et Chimpanzes, Lope Reserve, Gabon". In Database of non-human primate dietary studies. Rebecca Haywood (Ed). Released: 2020-08-21. Open Context. <> ARK (Archive):

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