Raemaekers J
Folia Primatol (Basel). 1978;30(3):194-205. doi: 10.1159/000155863.
Several studies of primates have found that they tend to eat different foods at different times of day. A detailed study of a small sample of siamang and lar gibbons shows that they select figs in the morning, young leaves in the afternoon and figs again for the last feed of the day. Various explanations of these choices are offered, centering on how the gibbons can best meet their energy demands overnight and at dawn.
多项对灵长类动物的研究发现，它们往往在一天中的不同时间吃不同的食物。一项对一小群合趾猿和白掌长臂猿的详细研究表明，它们在早上选择无花果，下午选择嫩叶，而在一天中的最后一餐再次选择无花果。针对这些选择给出了各种解释，重点是长臂猿如何能在夜间和黎明时分最好地满足自身的能量需求。
