Schaefer, M.B., G.C. Broadhead , and C.J. Orange. 1962. 

 Synopsis on the biology of the yellowfin tuna, 

 Thunnus (Neothunnus) albacares (Bonnaterre) 1788 

 (Pacific Ocean). In^ H. Rosa, Jr. (editor). Pro- 

 ceedings of the world scientific meeting on the 

 biology of tunas and related species, La Jolla, 

 California, U.S.A., 2-14 July 1962, p. 538-561. 

 FAO Fish. Rep. 6. 



Studies indicated that temperature is an im- 

 portant ecological factor determining the 

 distribution of adult tunas at the extremes 

 of their range. Seasonal appearances off 

 Baja California and northern South America 

 followed the march of the isotherms. Within 

 the range of temperature occupied, the most 

 important determinant of abundance appeared 

 to be food . 



KEY WORDS: tuna, yellowfin, temperature, 

 distribution, range, season, food. 



Schell, I.I. 1965. The origin of possible prediction 

 of the fluctuations in the Peru Current and Up- 

 welling. J. Geophys. Res. 70 (22) : 5529-5540 . 



A correlation of atmospheric forces and the 



El Nino phenomenon. Results indicated that 



the major controls of sea surface temperature 



and the strength of the Peru Current and Cape 



Horn Current, as well as upwelling over long 



time intervals and the development of El 



Nino, lie in the strength and convergence of 



o o 

 the westerlies between long. 135 W and 90 W 



and lat. 35°S to 50°S and in the strength of 

 the southerlies and southeasterl ies along and 

 inland from the coast linked to the wester- 

 lies. 



KEY WORDS: meteorology, oceanography, sea 

 surface temperature, currents. El Nino. 



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