Kawasaki, T. 1952. On the populations of skipjack, 

 Katsuwonus pelamis (Linnaeus), migrating to the 

 north-eastern sea along the Pacific coast of Japan 

 [In Jpn., Engl, summ.] Bull. Tohoku Reg. Fish. 

 Res. Lab. 1:1-14. 



Compared population structure and fish condi- 

 tion factor by areas (coastal vs. offshore). 

 Areas occupied overlapped and fluctuated with 

 variations in strength of the Kuroshio Cur- 

 rent. Availability was postulated to be re- 

 lated to the current system. 



KEY WORDS: tuna, skipjack, distribution, 

 migration, season, oceanography, currents. 



Kawasaki, T. 1957. Relation between the live-bait 

 fishery of albacore and the oceanog r aph i ca 1 

 conditions in waters adjacent to Japan. 1. The 

 fishing ground south of the Kuroshio Front. [In 

 Jpn.] Bull. Tohoku Fish. Res. Lab. 9:69-109. 



Albacore live bait fishing grounds formed in 

 the transition area north of the Kuroshio 

 front. The fishing ground was within an 

 isolated warm-water mass associated with an 

 anticyclonic eddy. The grounds formed only 

 when temperatures at the surface were greater 

 than 17°C and chlorinity greater than 19 /oo . 



KEY WORDS: tuna, albacore, oceanography, 

 front, water mass, currents, temperatures, 

 salinity. 



Kawasaki, T. 1957. On the fluctuation of the fisher- 

 ies conditions in the live-bait fishery of skip- 

 jack in waters adjacent to Japan. 1. [In Jpn., 

 Engl, summ.] Bull. Tohoku Reg. Fish. Res. Lab. 

 10: 17-28. 



Analyzed catch statistics for skipjack from 

 1905 to 1956. Indicated a trend for large 

 fish in good years, small fish in poor years. 

 Oceanographic conditions for skipjack fishery 

 were favorable in 1951 and 1956, but not in 

 1953. 



KEY WORDS: tuna, skipjack, catch, season, 

 oceanography. 



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