50 BULLETIN OP THE BUREAU OF FISHERIES 



Table 15. — Random samplings of the Karluk red-salmon run of 1925, distributed by age groups, sex, 



and length 



Lengths, in 

 centimeters 



Age groups and sex 



Total 



3i 



4i 



4i 



4 3 



52 



5s 



S< 



6s 





6s 



7. 



M 



F 



M 



F 



M 



F 



M 



F 



M 



F 



M 



F 



M 



F 



M 



F 



M 



F 



X 



M 



F 



43 















3 

 6 

 3 

 10 

 8 

 4 

 4 

 11 

 8 

 18 

 30 

 26 

 38 

 17 

 18 

 7 

 4 

 1 













1 



















4 



8 

 4 

 12 

 13 

 14 

 12 

 24 

 22 

 52 

 78 

 135 

 i on 



205 

 261 

 356 

 462 

 626 

 567 

 575 

 551 

 492 

 358 

 277 

 185 

 69 

 44 

 12 

 4 

 1 



44 























1 

 1 











1 









45 







































46 































1 

 1 

 1 



1 









47 





















1 

 2 

 1 

 1 



2 

 7 

 7 

 17 

 31 

 33 

 35 

 56 

 77 

 92 

 135 

 177 

 194 

 234 

 195 

 184 

 127 

 48 

 28 

 6 

 2 



1 

 2 

 4 

 2 

 7 

 13 

 17 

 60 

 75 

 97 

 149 

 220 

 284 

 300 

 284 

 245 

 198 

 126 

 71 

 22 

 5 

 1 



2 

 3 



1 

 1 

 1 



2 

 7 

 7 

 12 

 11 

 2 

 5 

 4 















48 











I 



.... 



1 

 1 

 1 

 5 



10 

 4 



13 

 7 

 3 

 5 

 3 

 2 

 2 















1 



5 

 1 

 3 

 8 

 6 

 10 

 18 

 28 

 44 

 50 

 66 

 77 

 59 

 63 

 36 

 28 

 15 

 2 









49 





























50 













1 







1 





1 











51 

















2 

 1 









52 



1 









1 



3 

 2 

 3 

 2 

 1 







1 

 1 

 1 

 4 

 1 

 1 



.... 



.... 



3 

 3 

 7 

 8 

 11 

 14 

 22 

 6 

 8 

 7 

 3 

 1 



1 

 1 

 1 

 3 

 1 

 4 

 7 



15 

 20 

 22 

 23 

 16 

 12 

 3 

 3 









53 



















54 











1 

 4 

 3 

 8 

 3 

 6 

 6 

 3 

 8 

 2 

 1 

 1 

 1 

 1 







2 

 1 

 5 

 4 

 4 

 9 

 21 

 26 

 40 

 56 

 56 

 50 

 39 

 41 

 17 

 13 

 5 

 2 









55 



3 

 1 



.... 



1 



"¥ 







1 







56 











57 





1 









58 



2 

 2 

 6 

 3 

 1 

 1 





1 









59 











1 

 2 

 2 

 4 

 3 

 2 

 1 



60 















1 



61 



"2" 



3 

 1 









1 





62 









2 



3 

 3 







83 







1 











64 























65.. 











1 















2 

 2 

 1 



66 







2 









1 

 1 









67 

















68.. 























69 











1 























1 



1 





70 

































71 





































72 



















1 























Total 







































20 



10 



5 



7 



51 



59 



216 



12 



5 



9 



1,692 



2, 185 



60 



11 



94 



133 



397 



523 



1 



8 



15 



5, 513 





The appearance of each age group in the run of 1925, and its relative importance 

 throughout the season, is shown in Table 16. From this it is again apparent that in 

 general such groups as have spent the longest time in the sea before maturing enter 

 at the very beginning of the run and develop their greatest strength before the 

 middle of the season, while the reverse is the case with the groups that have spent 

 the shortest period in the sea. The most marked example of this is in the case of 

 the 63 and the 6 4 groups. Although they belong to the same brood year and are of 

 the same age, they exhibit opposite tendencies as regards time of running. The 6 3 

 group runs strongest in June and virtually disappears by the first of August. The 

 64 group, on the contrary, is sparsely represented in the June run and develops its 

 greatest numbers from the middle of July to the close of the season. As the greater 

 part of the growth and development of the fish occurs in the sea, it is not strange 

 that length of residence there, rather than total age, should determine this matter. 



The 5 3 group, which stands midway between the two series as regards length of 

 life in the sea, develops no obvious tendency in either direction in the run of 1925. 



