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The present study aimed to generate information on the diversity of food items of the Calophysus macropterus speck from natural environments. 543 stomachs of individuals captured in the Amazon, Napo, Tigre and Ucayali rivers were collected and analyzed. Stomach contents were analyzed using the modified dot method. It was identified four food items in the diet of the speck, fish (47%), seeds, fruits and vegetable remains (37%) were the most representative, the crustacean item was present in a smaller proportion (15%) and the insects were the least representative (1%). The fish items consisted of fish remains of the order Siluriformes, Characiformes, Perciformes and Beloniformes. The vegetable item consisted of seeds of Cecropia trees and fruits of Ficus sp. In this study it was observed that there is no significant difference of the food items consumed during the hydrologic periods of increasing and transition to increasing rivers. In relation to sex our results show that the male individuals of C. macropterus are probably the ones that play a more efficient role as seed dispersers since the consumption of these is high in relation to the females.

ALIMENTACIÓN NATURAL DE LA MOTA Calophysus macropterus (Lichtenstein, 1819), EN AMBIENTES DE LA AMAZONÍA PERUANA