author(s)
S Djego-Djossou, E Wiafe, D Hakizamana, GA Mensah and BA Sinsin

abstract
In order to understand the feeding behavior of olive colobus, in southern Benin (West Africa), we conducted a study on food ecology and diet of this species in two different habitats. Ad libitum sampling procedure conducted with four unhabituated groups of olive colobus living in continuous forest and forest fragments, indicate that, this monkey feeds on foliage in both forest. However, leaves are the most important food in continuous forest compared with forest fragments but fruits, the least important in continuous forest. Results also show that olive colobus feeds on 37 parts of 25 plants species in forest fragments, 42 parts of 32 plants species in continuous forest. Specific richness for both forests is 47 species, Sorensen similary index is 18% and 10 species are commonly occurred in two forests : Albizia zygia, Cleistopholis patens, Cynometra megalophylla, Leucaniodiscus cupanioides, Pauridiantha hirtella, Psychotria calva, Pterocarpus santalinoides, Spondianthus preussii, Terminalia avicennioides, Xylopia parviflora.