-286- 



tn 



o 

 o 



X 



o 

 o 

 o 



UJ 



(T. 



X 



1 I r 



"1 — \ — r 



CATCH RATE 



1 — I — I \ r 



1 — \ — I — I — r 



BLUE MARLIN 



EFFECTIVE EFFORT 



o 



^O-O— O \ 



J 1 \ I \ L 



o— o— o_ 



I I I I I I I I I I I I I I I — L 



400 



300 



200 



1955 



I960 1965 

 YEAR 



1970 



1975 



o 

 o 



X 



z 

 o 



2 



liJ 



UJ 



> 



100 o 



Figure 6. — Catch rate and effective fishing effort for blue marl in in 

 the Pacific Ocean. (From Shomura 1980.) 



