During the studies carried out between 1986 and 1987 in the basin of the Napo and Nanay rivers, we have registered plants whose fruits are used by Aotus vociferans and other nocturnal mammals. Aotus ate 83 % fruits and 17 % flowers and nectar. Fruits of Ficus sp. (14%) and Inga marginata (10%) was most frequently eaten. Among flowers and nectar, only Schweilera sp.0%) was eaten.
Palabras claves : Aotus vociferans, competitors, feeding, plants, field study.
