Yamanaka , H., J. Morita, and N. Anraku. 1969. Rela- 

 tion between the distribution of tunas and water 

 types of the north and south Pacific Ocean. Bull. 

 Far Seas Fish. Res. Lab. (Shimizu) 2:257-273. 



Used the temperature-chlor ini ty relation to 

 map distributions of numerous water types and 

 then related those to tuna distributions. 

 Some patterns emerged, but several dilemmas 

 appeared. 



KEY WORDS: tunas, albacore, bigeye, water 

 masses, currents, catch, distribution, tem- 

 perature, salinity, migration. 



Yamanaka, I. 1978. Oceanography in tuna research. 

 Rapp. P-v. R*un. Cons. Int. Explor. Mer 173:203- 

 211. 



A brief historical review and summary of the 

 role of oceanography in the development of 

 the world tuna fisheries; and the role of 

 fisheries science in the study of oceanog- 

 raphy. Considers known influences of ocean- 

 ographic features and variables on tunas and 

 on the fisheries. 



KEY WORDS: tuna, distribution, catch, food, 

 depth, habitat, stock, spawning, oceanog- 

 raphy, currents, temperature, fronts, dis- 

 continuity, transparency, season, enrichment, 

 upwelling, thermocline, water mass, water 

 type. 



Yamanaka, I., and H. Yamanaka. 1970. On the variation 

 of the current pattern in the equatorial western 

 Pacific Ocean and its relationship with the yel- 

 lowfin tuna stock. Proc. 2nd CSK Symposium, 

 Tokyo, 1970:527-533. 



Oceanographic data from training cruises in 

 the 1960's were used to delineate major cur- 

 rent boundaries, meanders and eddies, and 

 seasonal variations which were compared with 

 fluctuations in boundaries of the currents 

 and major climatic events. Yellowfin year 

 classes were compared to the interannual 

 variations . 



KEY WORDS: tuna, yellowfin, environment, sea 

 surface temperature, depth, currents, bound- 

 aries, season, catch. 



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