CONTENTS 



Page 



Source of materials 92 



Methods 94 



Collection of materials 94 



Identification of stomach contents 94 



Evaluating food components 95 



Results 98 



Food habits of the yellowfin tuna 98 



Size of organisms taken 98 



Gorging 99 



Diurnal variation 99 



Variation in volume of stomach contents 99 



Variation in food of yellowfin related to locality, habitat, and body 



size 100 



Relation of volume of stomach contents to oceanographic conditions. 1 04 



Discussion 105 



Summary 108 



Literature cited 109 



m 



