FISHERY BULLETIN: VOL. 72. NO. 1 



Table 6a. — Estimated number of marked 1965-brood coho salmon in catches and hatchery returns by type of mark, 



region of recovery, type of fishery, and year of capture, 1967-68. 



Region 



Fishery type 



D-Ad 



Ad-LM 



Ad 



Ad-RM 



Total 



1967 1968 I96T 1968 1967 1968 1967 1968 1967 1968 



Ocean fisheries: 



British Columbia 



Washington 



Oregon 



C£Llif ornia 



Subtotail 



Freshwater fisheries: 



Columbia River 



Total 



Columbia River escapement: 

 Study hatcheries 



Commercial. . . 



Sport 



Commercial. . . 



Sport 



Commercial. . . 



Sport 



Commercial. . • 



Sport 



Commercial. . . 



Sport 



Commercial. . . 



All fisheries 



U6 

 677 

 636 

 226 

 736 



18 

 109 



921 

 1,527 







238 



7 2,686 



k59 

 1,809 

 2,051 



265 



2,530 



30 



789 



6,339 

 ii,i+90 

 14,382 



7,9'+'+ 



17,821 



299 



5,55^+ 



581 

 1,206 

 1,716 



i+20 

 3,564 



331 

 2,617 



2,104 

 5,829 





 846 



19,733 

 44,096 



1,957 

 8,478 



344 290 

 2 4,907 



25 



130 



16 

 825 



7,425 

 15,182 

 18,785 



8,855 



24,651 



678 



9,069 



24,715 

 59,930 



369 306 



139 6,816 



8,779 346 69,026 155 11,276 508 91,767 



38 138 1,125 1,882 4,391 9,399 1,568 1,864 7,122 13,283 



Table 6b. — Estimated number of marked 1966-brood coho salmon in catches and hatchery returns by type of mark, 



region of recovery, type of fishery, and year of capture, 1968-69. 



Region 



Fishery type 



D-Ad 



Ad-LM 



Ad 



Ad-RM 



Total 



1968 1969 1968 1969 1968 1969 1968 1969 1968 1969 



Ocean fisheries: 



British Columbia 



Washington 



Oregon 



California 



Subtotal 



Freshwater fisheries: 



Columbia River 



Total 



Columbia River escapement: 

 Study hatcheries 



Commercial. . , 



Sport 



Commercial. . . 



Sport 



Commercial. . . 



Sport 



Commercial. . . 



Sport 



Commercial. . . 



Sport 



Commercial. . . 



All fisheries 



7 

 242 

 281 

 148 

 645 

 23 

 224 



413 



1,157 







283 



77 



2,333 



1,456 



392 



2,930 



38 



465 



2,970 

 9,324 

 7,782 

 7,304 

 19,952 

 611 

 6,024 



278 

 2,178 

 1,807 



492 



4,261 



58 



728 



45 

 58 



2,763 

 4,928 



35 

 2,470 



17,239 

 36,728 



541 

 125 



397 



3,104 



31 



57 



2,728 

 7,074 



20 

 1,619 



6 1,853 103 10,196 666 62,468 



3,332 

 14,077 

 11,326 



8,336 



27,788 



730 



7,441 



23,143 

 49,887 



617 452 



246 12,476 



11,441 863 85,958 



624 1,075 2,191 5,769 2,067 1,771 4,890 8,615 



samplers recording partially regenerated Ad-LM 

 and Ad-RM as Ad-only marks. We attribute 

 the preponderance of Ad-only marks in the 

 above mentioned fisheries to the reluctance of 

 samplers to distinguish between partially regen- 

 erated maxillaries and maxillaries lost through 

 injury. 



Age and Maturity Schedules 

 (Assumptions 3 and 4) 



Godfrey (1965) noted that ocean catches of 

 coho salmon in the regions sampled in this study 

 are all, or nearly all, age 3 adults. Johnson 

 (1970) estimated that the ocean catch of 



150 



