LIST OF ILLUSTRATIONS 

 FIGURE Page 



Frontispiece: Landing a bigeye tuna over the stern of the 

 Hugh M. Smith. 



1. Location of fishing stations during 1953 2 



2. Temporal and spatial distribution of longline catches of 



yellowfin during 1953 6 



3. Japanese commercial catches in the central Pacific in 



1953 7 



4. Temporal variation in yellowfin catches at 150 -155 W. 



longitude 8 



5. Temporal and spatial distribution of longline catches of 



bigeye and albacore in 1953. 10 



6. Comparison of insular and oceanic yellowfin catch rates. 12 



7. Yellowfin size distribution with distance from land. ... 16 



8. Yellowfin size distribution by longitude 17 



9. Yellowfin size distribution by time of year 18 



10. Size distribution of other tunas 19 



11. Yellowfin size distribution by sex 20 



12. Bigeye and albacore size distribution by sex 21 



13. Temperature section along 140 W. longitude, March 1953 



( Manning cruise 14) 64 



14. Temperature section along 150 W. longitude, February 



1953 ( Manning cruise 14) 65 



o 



15. Temperature section along 150 W. longitude, May 1953 



(Manning cruise 15) 66 



