n=20l 



o 



a. 



Hi 

 0. 



3 

 O 



a: 



22 4 



n = 374 



99 n= 177 



oooooooo OOOOoOq 

 LENGTH GROUPS (MM.) 



40- 



30- 



^ 20- 



10- 



n = 256 



UJ 



<-> 



q: ^ 



o 



z 



■^— I— r I I ^ 



=> 30- 



o 



UJ 



(E 20- 



n = 409 



250 



10 



I I I 



oooooooo oOOOOO'o 

 LENGTH GROUPS (MM.) 



Figure 5,--Length frequency by ageandsex.kingsalmon 

 commercial catch. Cook Inlet, 1959. 



sex by standard regression methods (fig. 

 8). 



Cf 1958 



6-24 



6-20 



6-17 



lu 6-13 



I- 6-10 



1 6-6 



o 6-3 



5-31 



5-28 



I 



400 



I 



500 



I 

 600 



I 



700 



I 



800 



T— 



900 



I ' I ' 



1000 MOO 



LENGTH ( MM.) 



1958 



6-24, 



6-20 



6-17' 



UJ 6-13 



>- 6-10 



" 6-6 



° 6-3 



5-31 



5-28 



n.l5 

 n- 30 

 n.93 

 (1=141 

 r=l99 

 r>»e9 

 n=l35 

 11 = 42 

 n = ll6 



I I I 



■ I ' 



I ■ ' ■ ■ 



-| — I — I—, — 1—1 — I — I I I I I — I— ^ — T-* 



400 500 600 700 800 900 1000 1100 



LENGTH ( MM.) 



Figure 6.--Lengths of king salmon in 1958 Cook Inlet 

 commercial catch by sex and by fishing period. 



13,619. The average number of eggs per fe- 

 males was 8,517. 



The linear regression of number of eggs on 

 length is significant: r = 0.8105 (fig. 9). 



The average number of eggs in female king 

 salmon from Cook Inlet appears to be the 

 highest recorded on the eastern shore of the 

 Pacific Ocean. 



Fecundity 



Ovaries were taken from 60 females ranging 

 in length from 667 to 1,005 mm. (table 6). The 

 ovaries were wrapped in cheesecloth with a 

 label and preserved in formalin. The eggs were 

 separated from the membranes at the time of 

 counting. The number of eggs per fish, deter- 

 mined by actual count, ranged from 4,242 to 



DISTRIBUTION, TIMING, AND 

 RELATIVE MAGNITUDE 

 OF ESCAPEMENT 



Surveys were made inl958togainknowledge 

 of the distribution, timing, and relative magni- 

 tude of king salmon spawning runs into the 

 river systems tributary to Cook Inlet. As this 

 was the first effort of this kind in the area. 



11 



