SKIPJACK IN HAWAII FISHERY 



1952 1953 



293 



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BIWEEKLY PERIODS BIWEEKLY PERIODS 



PiGUEE 10. — Number of large skipjack caught (1952-53) ; biweekly periods. 



Certain features common to both years are to be 

 noted: (1) the approach of the hirge fish at the 

 start of the season, apparently from the leeward ; 

 (2) the concentrations on the windward and lee- 

 ward sides of Oahu in June and August, re- 

 spectively ; and (3) the final disappearance of fish 

 to the leeward. Differences in the 2 yeai-s are as 

 follows: (1) the appearance in the early part of 

 1953 (period 5) of large skipjack, and (2) the 

 direction of movement of the season fish between 

 the time of the windward Oahu peak catches 



(periods 12-13) and tlie leeward Oahu peak 

 (period 17). In 1952 the fish went northward to 

 Kauai and thus close to the limit of the fishery. 

 In 1953 they returned to leeward Oahu and 

 Hawaii to remain well within the range of the 

 Honolulu and Hilo based vessels. 



In general, the movements of large skipjack, as 

 indicated by their occurrenc<^ in the connnercial 

 catch, do not suggest an orderly migration along 

 the island chain. The reason for this may be in 

 the direction of approach of the migrating schools, 



