IO 2 



O 3 6 9 12 15 IB 21 24 



•4 27 30 O 3 6 



18 21 24 27 30 O 3 6 9 12 15 



?4 27 30 



§ 10 



\ / 

 CO 



-J p 



S IO 2 

 ■O 



1 * 



I / 



^ IO 2 



S io 



JULY 



TDlh 



Jimi 





1 



AUGUST 



Neuston SEPTEMBER 



. i;i i ...I I rT-u_ 



Epibenthic 





d_ 





OCTOBER 



n 



:j ^:La 



aa 



3 6 9 12 15 18 



18 21 24 27 30 3 



15 18 21 24 27 30 3 6 9 



24 27 30 



IO 2 



IO 



I 



103 



IO 2 



10 



I 



IO 2 

 10 



I 



NOVEMBER 



:lk 



jsfcf:™) 



1 



i. 



DECEMBER 



JANUARY 



Lfcaram. 



: '■■■ ':•: ': 



: 



Epibenrhic 





in 



FEBRUARY 



I iJTTSm^ 



3 6 9 12 15 18 21 24 27 30 3 6 9 12 15 18 21 24 27 30 3 6 9 12 15 18 21 24 27 30 3 6 9 12 15 18 21 24 27 30 



STANDARD LENGTH (mm J 



FIGURE 2.— Mean monthly concentrations of 10 larval size classes of northern anchovy. Engraulis mordax, in three water 

 column levels, March 1978-February 1979. Each monthly value represents a mean of 4 replicates from each of 4 transects 

 (total replicates = 16). 



Discussion 



In preliminary studies near San Onofre from 

 August 1977 through February 1978, signifi- 



cantly greater numbers of larvae were observed 

 in all three water column levels at night com- 

 pared with daytime collections. Sampling was 

 restricted to nighttime beginning in March 1978. 



898 



