Observations on two Japanese purse-seining operations in the equatorial Pacific

Contents: iii. preface, vi. list of tables, vi. list of figures, 1. introduction, 1. fleet operation, 2. the vessels, 4. summary of activities, 4. Takuryo Maru (500 GRT), 4. Matsuo Maru (group seiner), 7. fishing procedures, 7. locating the tuna, 7. the set, 7. log set, 8. school fish set, 8. graphical representation of fishing details, 8. fishing results, 8. general results, 13. discarded fish, 16. methods used for catch sampling, 16. quantity of catch, 16. species composition, 17. length frequency, 17. sampling difficulties, 17. miscellaneous observations and recommendations, 17. sampling, 17. the standard SPC purse seine catch form, 18. other, 19. conclusions, APPENDICES: 21. the standard SPC catch form, 23. a short english/japanese dictionary of fishing terms, 27. fish length sheet (pole and line and purse seine), 29. purse seine observer logbook form, 31. length weight relationship for skipjack, 33. length weight relationship for small yellowfin, 35. length weight relationship for large yellowfin