Figure 31 Geographical references for the Gulf of Mexico and Caribbean Sea 



1967a) Small areas of high catch 

 lalcs also occurred about midway be- 

 tween easternmost Soiiih America 

 and westernmost Afhea 



In the third quarter, the only ar- 

 eas of high catch rates were off New 

 England and the Grand Banks of 

 Newfoundland, and again in the nar- 

 row part of the Atlantic, midway be- 

 tween the most western part of Af- 

 rica and the most eastern part of South 

 America 



In the last quarter, the concen- 

 tration south of the Canadian banks 

 was farther west and extended south- 

 ward to latitude 30°N. The concentra- 

 tion between South America and Af- 

 rica had moved northward to 20°- 

 32°N The concentration off eastern- 

 most Brazil had formed again, and 





4*- 





' ' I ■ ■ I I I 



Figure 32 Distribution of oceanic catches of bluefin tuna (per 1(),(K)0 hcx)ks) in the lour quarters of the year, 1956-1968 



33 



