CONTENTS 



Page 



Hawaii skipjack fishery 281 



Purposes of this study 281 



Utilization of data 282 



Choice of unit of fishing effort 282 



Sources of error 286 



Error in determination of fish size 286 



Error in estimation of fishing effort 287 



Other sources of error 287 



Conclusions on sources of error 287 



Results and discussion 287 



Geographical distribution of 1952 and 1953 catches 288 



Catch per unit-of-effort in the Hawaii skipjack fishery 288 



Size of skipjack and pounds caught per unit of effort 289 



Distribution of 1952 and 1953 catches by biweekly periods 292 



Catches for the entire fishery 292 



Effects of small craft warnings 292 



Movements of skipjack within the fishery 292 



Large skipjack 294 



Small skipjack 294 



Oahu skipjack fishery, 1952 and 1953 294 



Statistical comparisons 294 



Relationships between catch statistics 294 



Use of catch records to determine population composition 295 



Fluctuations in the catch of large skipjack in the Oahu region 296 



Size composition 297 



Conjecture 297 



Summary 300 



Literature cited 300 



