290 



FISHERY BULLETIN OF THE FISH AND WILDLIFE SERVICE 



HAWAI I 



MAUI 



LEEWARD WINDWARD 

 OAHU OAHU 



KAUAI 



20.0 



55.2 



20.6 



3.3 



2.0 55.8 15.6 



PERCENT EFFORT 



Figure 6. — Pounds caught per unit of effort by island 

 regions. 



Table 6. — Average weight of skipjack caught in each zone 

 of the fishery 



•Indicates zones receiving more than 5 percent of the total fishing eflort 

 during the year. 



Each year the small fish are caught in Hawaii 

 (zones 3L and 3W) ; the larger fish are from in- 

 shore windward Oahu (5W), and offshore leeward 

 Oahu (2L). The association of small fish with 



LARGE SKIPJACK 



ALL SKIPJACK 



SMALL SKIPJACK 



1953 



I 



48 5 22 3 2 6 



PERCENT EFFORT 



Figure 7. — Pounds caught per unit of effort by distance 

 from shore. 



AVERAGE WEIGHT OF SKIPJACK 



Figure 8. — Regression of catch per unit of effort on 

 average weight of fish caught. 



