MOSHER: SCALE FEATURES OF SOCKEYE SALMON 



Table 6. — Percentage frequency distribution' of circuli in the total freshwater zone of age 2. sockeye salmon col- 

 lected in various years from 1956 to 1967. 



DESCRIPTION OF SCALES FROM 

 FISH OF VARIOUS AREAS 



The scale photographs are shown in three 

 major series: ages 1., 2., and 3. Representative 

 scales from each broad coastal area with rela- 

 tively similar scales (including specific scale 

 types from some areas of small production, when 

 necessary) are shown on one plate. Two ex- 

 ceptions to this grouping are made: (1) dis- 

 tinctive scales from age 1. fish from North Amer- 

 ican areas are shown on two plates and those for 



age 2. fish on one plate; and (2) scales from fish 

 from North American areas north of Bristol Bay 

 of ages 1., 2., and 3. are shown on the same plate. 

 Scales of age 0. fish from all areas are shown 

 on one plate, and those of age 4. fish from all 

 areas are shown on another plate. 



A reference to the appropriate frequency 

 tables of the number of circuli in the freshwater 

 and first ocean zones (Tables 4 to 8) is made for 

 each area group. These tables should be re- 

 ferred to as scales from each group are dis- 

 cussed. 



149 



