can be undertaken profitably in an attempt to determine the optimum 

 on-fraction and minimum c\irrent density for positive attraction o 

 However,, this would require a more satisfactory current interrupter 

 than that presently available „ After the optimum on-fraction has 

 been determined, the ej^jerimental work could be extended to include 

 a study of the reactions of tuna to interrupted di.rect current in a 

 large volume of seawater such as that of the concrete tank in which 

 the tuna were confinedo 



REFERENCES 



Morgan, Mo Eo 



I95I0 The response of a tropical fish to interrupted direct cur- 

 rent and its application to the problems of electrofishing in 

 seawatero MoSo ThesiSj, University of Hawaiij June 19^8 68 ppo 



Tester, Ac Lo 



1952 o Establishing tuna and other pelagic fishes in ponds and 

 tankso UoSo Fish and Wildlife SerVo, Spo Scio ReptoS Fisheries 

 Noo 71g 20 pp. 



