2 i.ol- 



O 



O 



X 



o 



O 0.6 



S 0.2 



1956 57 58 59 60 b\ 62 63 64 65 

 Year 



1956 57 58 59 60 61 62 63 64 65 



Year 



Figure 2.~Catch per 100 hooks, 4 principal species, whole Atlantic Ocean, Japanese Atlantic longUne fishery, 1956-65. 



Table 5. — Catch rates and rates of decline for yellowfin tuna, Japanese Atlantic longline fishery, 



1956-65 



•"• Rate of decline calculated as slope of a straight line (shown here as absolute value) fitted 

 to logarithms of monthly catch rates, beginning with the first month of fishing in the best year. 

 **Highly significant (P = 0.01, or less). 



