Feeding habits of Thunnus albacares in Chabahar coastal waters, southeast Iran

Abstract

During an 11 months study period in Chabahar waters of Oman Sea, 350 Thunnus albacares were caught and their feeding habit investigated. Stomach contents and its emptiness were analyzed for different seasons using customary methods. Results showed squids as being the main food item in T. albacares. Seasonal variation in food items was observed such that squids were staple food item in spring and summer and other fish species in autumn and winter. Stomach emptiness was highest in winter and lowest in summer. Stomach emptiness index suggests the fish being a moderate feeder.