CONTENTS 



Page 



Acknowledgments ' 



Description and operation of gear 2 



Trolling 2 



Lionglining 2 



Depth reached by longline gear 3 



Effect of depth of gear on catch rates 6 



Catch composition 6 



Trolling 7 



Longlining "^ 



Yellowfin tuna abundance ^ 



Trolling ^ 



Longlining 10 



Japanese longlining 10 



Tagging program 10 



Summary 12 



Literature cited 12 



Appendix 14 



