FISHERY BULLETIN: VOL. 86, NO. 4 



on 



Q 

 < 



O 



oi 

 w 



CQ 



C/5 



w 



50000 



40000 



30000 - 



20000 



10000 - 







1930 



1940 



1950 



1960 



1970 



TIME 



Figure 1.— Estimated number of adults, 1939-65, using values from Parrish and MacCall. 



The predicted, filtered, and smoothed estimates 

 of the recruits (Fig. 2), unlike those of the adults, 

 are not similar. The filtered and smooth estimates 

 are often indistinguishable, but there are some years 

 (such as 1941 and 1943) where there are significant 



differences. The predicted values are very smooth, 

 tending to emphasize the trend in the recruitment. 

 In an analysis of recruitment estimates produced by 

 standard cohort analysis of the anchoveta off Peru, 

 Mendelssohn and Mendo (1987) found the estimates 



600000 



SMOOTHED 



FILTERED 



PREDICTED 



1930 



1940 



1950 



1960 



1970 



TIME 



Figure 2.— Estimated number of recruits, 1939-65, using values from Parrish and MacCall. 



624 



