RED SALMON OF BROOKS AND KARLUK LAKES 



57 



3000-1 



T ^ 



2000 



NUMBER EGGS RIGHT OVARY 



Figure 4. — Egg counts for right and left civaries of female red salmon sampled at Brooks Lake, lO'iT and 195S, and 



Karluk Lake, 1958. 



number of spawners was approximately the same 

 (table 1). Mathisen - in a study of e<rg mortality 

 as related to sex ratio ditl'erences concludes that 

 in red saluKtii, mortality of eg<rs was only slipiitly 

 higher with a sex ratio as high as 15 females to 1 

 male than with a ratio of 1 to 1. Thus, even a 

 highly unbalanced spawning stock favoring fe- 

 males may residt iu only minor decreases in idti- 

 mate eg<r survival from each female. Such a stock 



might yield a considerable increase in potential 

 production over stocks of the same size, but with 

 more evenlv balanced sex ratios. 



Table 1. — Ueprodvctirr potential of red salmon at Babine 

 Lake in W-i6, 19J,7, and 1949 (after ]Vithler, 19d0) 



• See footnote 1. 



