INTERYEAR SIZE DIFFERENCES 



Before examining size distributions for evidence of growth, it 

 is important to look for groups of similar sizes that appear each year. 

 If detected in the same position year after year these dominant groups 

 can be looked upon as the progeny of annual spawnings (year classes). 

 To make this interyear comparison, monthly Honolulu market weights 

 from November 1947 through December 1954 were plotted as weight 

 frequency graphs (figs. 4-11). 



^80 



U- 40 



^ 



(r 



UJ 



CD 40 



NOVEMBER 



N = 323 



DECEMBER 



N = 567 



129 169 209 249 



WEIGHT IN POUNDS 



320 



1 

 329 



Figure 4. --Monthly weight frequency distributions 

 of bigeye tuna from the Honolulu market for 1947. 



