FRENCH and BAKKALA: NEW MODEL OF OCEAN MIGRATIONS 



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50°N 



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55°N — 



50° N 



60°N 



55°N 



50°N 



60°N 



55°N 



50°N 



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TAGGING AREA 



RECOVERED I - 9 DAYS 

 AF-TER TAGGING 



RECOVERED 10- 19 DAYS 

 AFTER TAGGING 



RECOVERED 20-29 DAYS 

 AFTER TAGGING 



RECOVERED 30-43 DAYS 

 AFTER TAGGING 



50° N 



55°N 



50°N 



60° N 



55°N 



50°N 



60°N 



55°N 



50°N 



Figure 16. — Recovery locations for immature sockeye salmon tagged near Adak Island from 16 June 

 to 24 July 1964 and recovered in the North Pacific Ocean from 12 July to 9 August 1964 (data 

 from Fisheries Research Institute, 1964). 



accurately reflected. Effort was concentrated 

 south of the Aleutian Islands (near, west, and 

 southwest of the release location) and in the 

 Bering Sea near lat. 60^N (Figure 17). Movement 

 of tagged fish to the east could not be detected, 

 and movement north and northwest in the area 

 between the Aleutian Islands and lat. 58^N would 

 have a low probability of being detected compared 



to movement in the North Pacific Ocean. A sub- 

 stantial portion of the recoveries occurred in the 

 North Pacific Ocean over an extended period; 

 36% of the recoveries were taken 10 to 19 days 

 after tagging, 19% 20 to 29 days after tagging, 

 and 4% 30 or more days after tagging. These 

 recoveries indicated that substantial numbers of 

 the releases remained in the North Pacific Ocean. 



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