1955 1957 1959 1961 



YEAR OF DOWNSTREAM MIGRATION 



1963 



Figure 9. — Average fork length of sockeye smolts of 

 various ages by year of downstream migration. Little 

 Kitoi and Ruth Lakes, 1955-63. Solid lines, long dashes, 

 and short dashes indicate 1-, 2-, and 3-check smolts, 

 respectively. Circled dot is for 3-check smolts in Little 

 Kitoi Lake. 



^160 



140 



120 



100 



o 80 

 to 



60- 



40 



o 20 



< 



cr. 



LU 



> 



EGG POTENTIAL- LITTLE KITOI LAKE 

 (HUNDRED THOUSANDS) 

 5 10 15 20 25 



12 3 4 5 



FRY RECRUITMENT-RUTH LAKE 

 (HUNDRED THOUSANDS) 



30 



Figure 10. — Average fork length of sockeye smolts 

 resulting from various fry-recruitment densities. 

 Little Kitoi and Ruth Lakes, 1954-61 brood years. 



3 

 O 



123 123 123 123 12 

 1955 1956 1957 1958 1959 



BROOD YEAR 



FIBST-rEAB GROWTH ^1 THIRO-rEAR GROWTH ffTTIl 

 SECOND-YEAR r,RO«TH ^3 SPRING GROWTH I I 



123 123 123 123 12 

 1955 1956 1957 1958 1959 



BROOD YEAR 



Figure 11. — Mean number of circuli laid down by sockeye smolts of various age groups by brood year. Little 

 Kitoi and Ruth Lakes, 1955-59 brood years. The numbers 1, 2, and 3 above brood year dates indicate the age 

 of smolts, i.e., I, 2, and 3 annuli. 



12 



