DRAGOVICH and POTTHOFF: FOOD OF SKIPJACK AND YELLOWFIN TUNAS 



YELLOWFIN TUNA 



SKIPJACK TUNA 



^ FISH Q^ MOLLUSKS 



QcmtsncEANS | other 



•OLUHES FREQUEIICr Of OCCUIirtEIICE 



IOC 100 



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VOLUMES FREQUEIICr OF OCCURIIEIICE 

 100 100 

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Figure 4. — The distribution of volumes and frequencies of occurrence of the major food categories (fish, crusta- 

 ceans, mollusks, and miscellaneous) at various sizes of skipjack and yellowfin tunas off the west coast of Africa, 

 The sizes of skipjack range from 370 mm to 610 mm (intervals 20 mm) ; the sizes of yellowfin tuna range from 

 520 mm to 910 mm (intervals 30 mm). 



1095 



