134 fish iiaix-hi-.rv management 



Table 17. spawning informaiion and temperaflre requirements for 

 is expressed in "e. 



SI' EC IKS 



SPAWNING 



TEMPKRATIRK 



EGGS PER 

 POUND 



FREQUENCY RANGE OPTIMUM SPAWNING OF FISH 



Chinook salmon Once per 

 life span 



33-77' 



.50-57° 



4.5-5.5° 



3.50 



Coho salmon Once per 33-77° 48-58° 



life span 



Sockeye salmon Once per 33-70° .50-,59° 



life span 



Atlantic salmon Annual- 33-75° 50-62° 



Biennial 



4.5-55° 



45-.54° 



42-50° 



400 



500 



800 



Rainbow trout Annua! 



33-78° 



50-60° 



50-55° 



1,000 



Brook trout Annual 



33-72° 



4.5-.55° 



4.5-.5.5° 



1,200 



Brown trout Annual 



33-78° 



48-60° 



48-5,5° 



1,000 



Lake trout 



Annual 



33-70° 42-.58° 



48-52° 



800 



Northern pike Annual 



Muskellunge Annual 



Walleye Annual 



33-80° 



33-80° 



40-65° 



4.5-65° 



33-80° 4.5-60° 



40-48° 



4.5-5.5° 



48-55° 



y,ioo 



7,000 



25,000 



Striped bass Annual 



3.5-90° 



5.5-75° 



5.5-71' 



100,000 



Channel catfish Annual 



33-95° 



70-85° 



72-82° 



3,7.50 



Flathead catfish Annual 



33-95° 



65-80° 



70-80° 



2,000 



