Alverson, F.G., and C.L. Peterson. 1963. Synopsis of 

 biological data on bigeye tuna Parathunnus sibi 

 (Temminck and Schlegel) 1844. Species Synopsis 

 No. 14. FAO Fish. Biol. Synop. 57. FAO Fish. 

 Rep. 6:482-514. 



Mapped the distribution of bigeye. Seasonal 

 differences in distribution were not shown 

 and that the relations between the distribu- 

 tion of the fish and various oceanographic 

 changes are obscure was pointed out. Fur- 

 ther, that nothing is known of the size of 

 the bigeye tuna population in the Pacific. 

 Summarized the depth, temperature and geo- 

 graphic ranges of the species and currents in 

 which it is found. Speculated that distribu- 

 tion within the currents is no doubt related 

 to temperature, food supply, and other fac- 

 tors . 



KEY WORDS: tuna, bigeye, distribution, cur- 

 rents, temperature, food. 



Anonymous. 1962. Present status of tuna research in 

 Japan. Second Japan-United States Tuna Confer- 

 ence, Oct. 9, 1962, Tokyo, Rep. 2, 57 p. 



A review of research of the Nankai Regional 



Fisheries Research Laboratory to 1962. In- 

 cludes catch by season and region; contains 

 maps and tables. The center of distribution 

 differed for each species with respect to 

 ocean currents. Within a species the size 

 composition varied with currents, suggesting 

 separate ecological existence in different 

 current systems. The fishing grounds mainly 

 were homogeneous in an east to west direction 

 within a current. Migrations were of two 

 types: 1) within a current and 2) across 

 currents. The first is subject to seasonal 

 change of distribution within a current 

 itself and the second is an active movement 

 of the fish with a change in their stage of 

 life. The second is more rapid than the 

 first. There were size changes within the 

 current, large fish being found in the east 

 and small in the west. Spawning areas were 

 given for all species discussed. 



KEY WORDS: tuna, albacore, yellowfin, big- 

 eye, bluefin, catch, distribution, season, 

 currents, size, migration, spawning. 



