UNITED STATES DEPARTMENT OF THE INTERIOR 



Stewart L. Udall, Secretary 

 Frank P. Briggs, A.^sistant Secretary for Fish and Wildlife 



FISH AND WILDLIFE SERVICE, Clarence F. Pautzkc, Commissioner 



Bureau op Commercial Fisheries, Donald Tj. McKenian, Director 



Hypotheses on the Origin of Exploited 



Skipjack Tuna ( Katsuwonus pelamis ) 



in the Eastern and Central Pacific Ocean 



By 



BRIAN J. ROTHSCHILD 



United States Fish and Wildlife Service 

 Special Scientific Report--Fisheries No. 512 



Washington, D. C, 

 April 1965 



