(B 



-2D. YEAR 

 SEPT I TO MAY 31 



PRIOR JAN I .1 AGE 



AFTER JAN I 2AGE 



(607o-80%MATURING) 



3D. YEAR 



JUNE I TO AUG 31 



2 AGE MATURING 

 .2 AGE IMMATURE 



I70">E. 



180' 



I70°W. 



I60«W. 



ISCW. 



'-3D. YEAR PRIOR JAN. I .2 AGE 



I'-SEPT I TO MAY 31 -•- AFTER JAN I .3 AGE 



(MATURING) 



rP-4TH YEAR 



[f JUNE I TO AUG 31 



-A- .3 AGE 

 (MATURING) 



Figure 11.— Diagram of ocean mi^-ations of Bristol Bay sockeye salmon based on seine catch and tagging data 

 througlii 1966; arrows indicate direction and approximate distribution. 



MODELS OF OCEANIC MIGRATIONS OF PACIFIC SALMON 



451 



