information on the first and second points. As 

 for size, larger sculpins are, of course, better 

 able to capture and swallow large pieces of 



Table 3— Number of salmon eaten by prickly sculpins in 

 the Elokomin River and Herman Creek after releases 

 of chinook salmon in May 1962 and 1963 



Study area 

 & year 



Sampling 

 dates 



Distance 



from mouth 



of river 



Total 

 sculpins 

 examined 



Sculpins 

 with salmon 

 in stomach 



Elokomin River: 



1962 May 25 3.2 



26 3.2 



25 130 



Total fish 

 1963 A 



May 23 

 22 

 23 

 24 

 23 



2.0 



3.2 

 3.2 

 3.2 

 6.4 



1 



12 



5 



1 



Herman Creek: 

 1962 



May 17 



00 



116 



Salmon in 



stomach of 



sculpins 



Number Number Number 



17 

 5 



73 



Table 5.— Number of salmon eaten by torrent sculpins in 

 the Elokomin River after releases of chinook salmon 

 in May 1962 and 1963 



Table 4.— Number of salmon eaten by reticulate sculpins 

 in the Elokomin River and Herman Creek after releases 

 of chinook salmon in May 1962 and 1963 



Table 6.— Incidence of predation on chinook salmon by 

 sculpins, salmon, and trout for releases in the 



