BRINTON: POPULATION BIOLOGY OF EUPHAUSIA PACIFICA 



SEPT 4-6 55 



MARCH 8-16 '56 



SEPT ll-24'55 



OCT 21- 30 '55 



4 



Ih^ 



NOV 8-13 '55 



NOV l6-e'55 



MAY 30-JUrC 13 



I 



JULY 7-l4'56 



Ite 



DEC 1-7 55 



JAN 5-9'56 



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SEPT 28 1 



FEB 5-9 56 



OCT 29 

 -NOV 4 



DEC 5-M 56 



2,5 10 



2 5 10 



TOTAL LENGTH (mm) 



Figure lO.-Length-frequency (histograms) and biomass (line graphs) distributions, of 

 Euphausia pacifica, 1955-56 cruises. Dotted boxes appended to histograms for body lengths 16-21 

 mm are corrections for net avoidance using Isaacs' (1965) factors derived for anchovy larvae of 

 those sizes. Corrections are not applied to biomass. Arrows trace development of cohorts. Solid 

 arrows trace sequences considered clear, dashed arrows trace those less clear. 



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