(about 77 pounds), and that there were nnore males annong the larger fish, 

 samples (table 10) also contain more male yellowfin and bigeye. 



The present longline 



Sufficient material is now on hand for a preliminary analysis of the sex discrepancy 

 of the yellowfin tuna. We have used samples from the Japanese mothership operations of 1950 

 and 1951 (Murphy and Otsu 1954), POFI longline cruises (Murphy and Shomura 1953a, b), POFI 

 livebait fishing and trolling in the central Pacific, and the cruises covered in this report (table 

 10). 



Table 9. --I-.ength frequencies of albacore and skipjcick tuna taken by longline 

 fishing gear 



19 



