UNITED STATES DEPARTMENT OF THE INTERIOR, Fred A. Seaton, Secretary 

 FISH AND WILDLIFE SERVICE, Arnie J. Suomela, Commissioner 



SEXUAL MATURITY AND SPAWNING 

 OF ALBACORE IN THE PACIFIC OCEAN 



BY TAMIO OTSU AND RICHARD N. UCHIDA 



FISHERY BULLETIN 148 



From Fishery Bulletin of the Fish and Wildlife Service 



VOLUME 59 



UNITED STATES GOVERNMENT PRINTING OFFICE • WASHINGTON • 1959 



For sale by the Superintendent of Documents, U. S. Government Printing Office 

 Washington 25, D. C. Price 20 cents. 



