CONTENTS 



Page 



Introduction t 1 



Methods used for evaluation of stomach contents 2 



Numerical method 2 



Percentage frequency-of-occurrence method 2 



Volumetric, or weight, method 2 



" Points" method 2 



Comments on methods used 2 



Results of studies 3 



Food organisms 3 



Tunas as "collectors" of marine organisms 4 



Feeding habits 4 



Food in relation to species and size of tunas 4 



Seasonal and diurnal variation in tuna food and feeding 5 



Literature cited 6 



Appendix 9 



