ILLUSTRATIONS 



FIGURE Pa 8 e 

 Frontispiece: Location of the Line Islands group in respect to other major fishery centers 



1 . Page from longline fishing log 2 



2. Comparison of steel and cotton longline catch rates 2 



3. Daily variability of yellowfin catch rates between North American and Alrita . ... 3 



4. Temperature sections and yellowfin tuna catches along 119 W. , 110 -115 W. , and 



155° W. longitude, February to April 4 



5. Comparison of the catch rates of Japanese commercial vessels and American vessels. 5 



6. Daily catch rates for yellowfin in the Line Islands 5 



7. Yellowfin catch rates by vessels based at Pago Pago, American Samoa 6 



8. Jan gaard longline fishing, cruise 1, January-March 6 



9. Jangaard longline fishing, cruise 2, March-May 6 



10. John R. Manning longline fishing, cruise 20, May-June 7 



11. Oceanic longline fishing, cruise 1, May- June 7 



12. Brothers longline fishing, cruise 2, July-August 7 



13. Oceanic longline fishing, cruise 2, July-August 7 



14. Commonwealth longline fishing, cruise 1, July -August 8 



15. Sea Hawk longline fishing, October 8 



16. C ommon wealth longline fishing, cruise 2, October -November 8 



17. Yellowfin size distributions from Line Islands during 1954 8 



18. Surface temperatures and yellowfin catches during 1954 9 



19. Shark catch rates on longlines and percentage of shark damage to hooked yellowfin. . 10 



20. Percentage of yellowfin catch by hook number, North American , cruise 1 32 



21. Temperature section along 120°W. and 109°W. longitude, February-March 32 



22. Temperature section along 9°S. latitude, March 33 



23. Temperature section along 149°W. and 157°W. longitude, April 33 



