CONTENTS 



Page 



Sources of data •• ^ 



Applicability of the size-frequency method 1 



Methods 2. 



Interpretations of size frequencies 3 



Hawaiian yellowfin 3 



Sexual differences in the catch 3 



Interyear size variation 4 



Xntrayear size variation 4 



Equatorial yellowfin o 



Sexual differences in the catch .................. o 



Size differences with area 7 



Interyear size variation 8 



Xntrayear size variation 9 



Comparison of size distributions from the central jmd western Pacific 10 



Discussion 11 



Summary 12 



Literature cited 12 



Appendix 14 



