p 



E 

 R 

 C 



E 

 N 



T 



O 



F 



V 

 O 



L 

 U 

 M 



E 



MAY CAD STN SCUD AQBTL TER LCH WRM FSH CRN 



FOOD ITEM 



Figure 15. Percent volume of stomach contents of 10 inch and 



larger Arctic grayling and brook trout from the Big Hole River 

 and its tributaries made up of various food items. 



MAY=Mayfly, CAD=Caddisf ly , STN=Stonef ly , SCUD=Amphipod Crustacean, 

 AQBTL=Aquatic Beetle, TER=Terrestrial Insect, LCH= Leech, WRM=Worm, 

 FSH=Fish, CRN=Cranefly 



37 



