■21 • 



o 

 o 



X 



o 

 e> 



\. 



r 

 v> 



0.8 . 



e.6 . 



e.4 . 



0.2 . 



1967 



1977 



B, 



10 



< 



a 

 <n 

 s 



6 . 



1967 



1977 



1979 



Figure 7. a) Catch-per-unit-effort (number of fish/100 hooks) from 

 the Atlantic longline fishery for yellowfin tuna, 

 1967 to 1978. 



b) Catch-per-unit-effort (metric tons/standard purse 

 seine days absence) from the eastern Atlantic surface 

 fishery for yellowfin tuna, 1967 to 1979. 



