. L'écologie des folivores arboricole : un colloque organisé au Centre de recherche et de conservation, National Zoological Park, Smithsonian Institution, du 29 au 31 mai 1975 . | Fév, Mar2 Avril, Mai, Juin, Juillet, sept., Oct, Nov, DEC2 décembre, janvier" ? Fév, Mar, Mars, Avril, Mai, Juin, août, sept., Oct, Nov, Dec, Jan, Figure 6. La fréquence d'utilisation d'aliments du Ficus exasperata et classement par ordre d'importance dans le régime alimentaire des groupes I et II au cours de périodes d'échantillonnage comparables. alimentaires exploitées de différentes espèces ont été inclus parmi les 5 rangs (tableaux 7 et 8). Un total de 23 périodes enregistrées à partir de Grou

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. The Ecology of arboreal folivores : a symposium held at the Conservation and Research Center, National Zoological Park, Smithsonian Institution, May 29-31, 1975 . | Feb, Mar2 Apr, May, Jun, Jul, Sep, Sep, Nov, Nov2 Dec, Jan„ ? Feb, Mar, Mar, Apr, May, Jun, Aug, Sep, Oct, Nov, Dec, Jan, Figure 6. Frequency of use of food items from Ficus exasperata and rank order of its importance in the diet of Groups I and II during comparable sample periods. food items exploited from different species were in- cluded among the top 5 ranks (Tables 7 and 8). Of a total of 23 sample periods recorded from Group I, foliar foods were top-ranking items in 7 sample periods and their use was greater than that of fruits and invertebrates in 11 and 13 sample per- iods respectively (Table 9). In Group II, foliar items were top-ranking items in 3 of 18 sample periods and the frequency of use of foliar food was greater than the use of fruits and invertebrates in 3 and 8 ob- servation periods respectively (Table 10). This sug- gests that foliar food items were more important in the diet of Group I than in the diet of Group II, which was also indicated in the comparison of their vegetable diet (Tables 2 and 3). Since fruits often occupied top rank and were usually taken at high frequencies, they must be considered the most impor- tant component of the diet of both groups. When fruits did not occupy this rank, foliar food occupied this rank more often than invertebrate food and their mean percentage frequency of use shows that they were taken at least as frequently as invertebrate food (Tables 9 and 10). The importance of foliar food is also shown by the fact that in both groups they were top-ranking food items during successive months from March to May 1974 when they constituted over 40 percent of the diet of Group I and 38 percent of the diet of Group II. Both groups used foliar-food items more frequently than invertebrate food in May 1973 and around July 1973-September 1973 and February 197

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