REXSTAD and PIKITCH: FOOD CONSUMPTION OF PACIFIC HAKE 



Table 4.— Diet composition by size class on a daily basis (t) and on seasonal basis (kt). Values based on biomass tor the Columbia 

 INPFC area estimated from bottom trawl survey (Weinberg et al. 1984) and hydroacoustic survey (Francis, see text fn. 4). T - <0.1 

 t/d or 0.05 kt seasonally. 



Shrimp CPUE (year i+2), Hake CPUE (year i) 



800 



700 



600 



If) 



300 - 



200 - 



100 



12 16 20 24 



Hake CPUE (t/BMRT day) 



28 



32 



36 



Figure 4.— Pink shrimp CPUE in year i + 2 (y-ax\s) plotted against Pacific hake CPUE 

 in year i (z-axis). Regression expression is y = 1029 - 23.23x (r 2 = 0.418). Numbers 

 on the plot represent the years of the CPUE data. 



953 



