mentioned that each scouting and fishing epi- 

 sode is limited by the survival of the baitfish; 

 therefore a reduction in the scouting period 

 would certainly result in a more effective use 

 of the available bait as well as substantial in- 

 crease in the catch. 



Skipjack tuna concentrations occur in local 

 waters at various places for periods of several 

 days or weeks. Ability to predict the location 

 of these concentrations would require knowl- 

 edge of short-range changes in the ocean 

 locally. In addition, if techniques could be 

 developed to permit fishing vessels to remain 

 at sea longer, the prediction of major distant 

 concentrations at various times of the year and 

 estimates of their regional abundance would be 

 of great value. This latter kind of prediction 

 is now being made for the Hawaii region; its 

 general extension may be most useful in the 

 future. 



LITERATURE CITED 



BROCK, VERNON E., and MICHIO TAKATA. 

 1955. Contribution to the problems of bait 

 fish capture and mortality, together with 

 experiments in the use of tilapia as live 

 bait. Territory of Hawaii, Industrial Re- 

 search Advisory Council Grant 49, Final 

 Report, 39 pp. 



JUNE, FRED C. 



1951. Preliminary fisheries survey of the 

 Hawaiian-Line Islands area. Part III. 



The live-bait skipjack fishery of the 

 Hawaiian Islands. Commer. Fish. Rev. 

 13(2): 1-18. 



ROTHSCHILD, BRIAN J. 



1966. Preliminary assessment of the yield 

 potential of the skipjack tuna in the cen- 

 tral Pacific Ocean. In Manar, Thomas 

 A. (editor). Proceedings of the Gover- 

 nor's Conference on Central Pacific 

 Fishery Resources, pp. 251-258. State 

 of Hawaii, Honolulu. 



ROYCE, WILLIAM F., and TAMIO OTSU. 



1955. Observations of skipjack schools in 

 Hawaiian waters, 1953. fv .Sj Fish 

 Wildl. Serv., Spec. Sci. Rep. Fish. 147, 

 v + 31 pp. 



SILLIMAN, RALPH P. 



1966. Estimates of yield for Pacific skipjack 

 and bigeye tunas. In Manar, Thomas A. 

 (editor). Proceedings of the Governor's 

 Conference on Central Pacific Fishery 

 Resources, pp. 243-249. State of Hawaii, 

 Honolulu. 



UCHIDA, RICHARD N. 



1966. The skipjack tuna fishery in Hawaii. 

 In Manar, Thomas A. (editor). Proceed- 

 ings of the Governor's Conference on 

 Central Pacific Fishery Resources, pp. 

 147-159. State of Hawaii, Honolulu. 



YAMASHITA, DANIEL T. 



1958. Analysis of catch statistics of the 

 Hawaiian skipjack fishery. U.S. Fish 

 Wildl. Serv., Fish. Bull. 58: 253-278. 



MS*1783 



