-290- 



o 



"1 — \ — \ — \ — \ — I — I — I — r 



1 — \ — \ — I — r 



AREA 3 



:-t-t-T-T-f--T-f 



10 

 8 

 6 

 4 

 2 



1 — I — I — \ — r 

 AREA 4(182) 



/ -.--•-, 



1955 



975 



YEAR 



Fiqure 10. --Catch rates and effective fishing effort for black marlin 



in the Pacific Ocean, 1952-75. (From Shomura 1980.) 



