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Daily ration and population food consumption of juvenile and adult searobin Prionotus punctatus (54-314 mm total length) were estimated for the southeastern Brazilian shelf off Ubatuba (23°35'S, 45°00'W). Samples were collected during 24hour-tisheries in three periods during 1987/88. P. puctatus is a diurnal invertebrate feeder, its maximum stomach fullness occurred during the afternoon. Instantaneous gastric evacuation rates were estimated from the data, and daily ration was subsequentlydoi:10.1590/s1413-77391998000100004 fatcat:a4xwbidvxfc6pij3judznp7mya