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porpoise on which there could be no Betting, or do those species nor- 

 mally occur also with the eastern spinner. Would the eastern spin- 

 ner number of 23 percent be a general average of the number of 

 schools upon which there could be no setting under the existing 

 regulal ions? 



Dr. Fox. Well, there are no other species or stocks that have been 

 determined to be depleted. There are four stocks of which there is no 

 take allowed because the information is missing as required under 

 section L03(d) of the act. 



Mr. Leggett. So that does not affect our result? 



\)v. Fox. Xo; the amount of take normally of those is so small 

 as to be negligible. 

 Mr. Leggett. All right. 



I was a little slow in grasping this. Forty nine percent of all the 

 yellow-fin is on mixed schools, is that right? 



Dr. Fox. Xo; 49 percent of the porpoise sets are on mixed 

 schools: 58 percent of the yellowfin tuna associated with porpoise, 

 comes from mixed schools of any sort. 



Mr. Leggett. Then the next two numbers were 23 percent of the 

 catch associated with yellowfin were on eastern spinner mixed 

 schools, right ? 



Dr. Fox. Right. 



Mr. Leggett. All right. "What percentage of the yellowfin tuna is 

 taken on porpoise ? 



Dr. Fox. Long term average of roughly 70 percent of the TT.S, 

 yellowfin tuna taken is associated Avith porpoise. 



Mr. Leggett. Seventy percent. So if you reduced the 23 percent 

 on which there can be no setting by roughly 30 percent, that would 

 give you a rough figure of about 15 percent of the total yellowfin 

 that could not be sot on as a result of these regulations? 



Dr. Fox. Under normal fishing practices, yes. 



Mr. Leggett. Then the next question would be, do the boats that 

 catch yellowfin also catch skipjack? 



Dr. Fox. That is correct. 



Mr. Leggett. Xormally those boats only catch two kinds of fi-h. 



Dr. Fox. Well, in major proportion, yellowfin, skipjack, bluefin 

 tuna would be third, and then there are others. 



Mr. Leggett. They don't catch the bluefin in the Pacific. 



Dr. Fox. Yes; they do. 



Mr. Leggett. Of the total catch of the bluefin and skipjack and 

 yellowfin, how do those percentages break down in general? 



Dr. Fox. Yellowfin accounts for about TO percent of the tuna 

 catch. 



Mr. Lecgett. OK, in order to determine the exact effect of the 15 

 percent reduction on setting, you would have to reduce the 15 percent 

 by another 30 percent or reduce it down to a figure of about 1^ per- 

 cent of the overall fishing volume which would probably be affected 

 by the regulations now set up to be promulgated? 



Dr. Fox. That would be an overall average. 



Mr. Legoett. I understand that every ship is not average. 



All right, Mi-. Hughes? 



Mr. Hughes. I have no questions, Mr. Chairman. 



