FISHERY BULLETIN: VOL. 70, NO. 3 



Cruise 



Table 2. — Catch of Pacific sardine larvae by type 1 (0.55-mm mesh) and type 2 

 (0.333-mm mesh) nets for each sample. 



Station 



Net 

 type 



Standard length 



2.5 



3.75 



4.75 



5.75 



6.75 



7.75 



8.75 



9.75 



m 



(3) 



W2jfc 



fc = l 



Plots of nijk and ^2;fc did not clearly indicate the 

 relation between Cjk and n^jk. Thus both meth- 

 ods of estimating su were used. 



Examination of the data revealed that a linear 

 equation is appropriate to describe the relation 

 between su and Lj when Lj ^ 5.75 mm. 



sij = a + bLj. 



(4) 



RESULTS 



Table 1 presents catches of anchovy larvae 

 by the type 1 and type 2 nets for each sample. 

 The first two digits of the cruise refer to year 

 and the second two by month. Station notation 

 is explained by Ahlstrom (1966) . Larvae great- 

 er than 9.75 mm were captured, but the numbers 

 involved were too small to be useful for the study. 

 Estimates by (2) and (3) of Sij are as follows: 



842 



