On 



a r 



a" 

 <r> 



o 



0) 



tr 



(D 



Year 



Figure 2 Vertical temperature differential and number 

 of large tuna taken per cruise (whole season) 



CD 



4 





to 



CD 



10 



9i 



032 



35 



/ 



0/ 



/ 



36 



\ O 

 \ 



024 



,27 



\ 



2.^ 



tT 



IT 



12 1? U 15 16 17 



August surface water temperatures 



Figure 3 Number of small ttxna taken per cruise (^ols 

 season) arid surface water temperatures in August 



16 



