Fisher and Pearcy: Distribution, migration, and growth of Oncorhynchus tshawytscha 



281 



and June, when they dominated the catch of CWT 

 fish. They were much less abundant in July, August, 

 and September. (Table 5). The few age-0.1 fish were 

 also more common in the May— June period than in 

 the July-September period. Conversely, recoveries 

 of C WT subyearling ( age 0.0) fish were mainly in the 

 July-September period (Table 5). 



Size-frequency distributions 



Mean FL of age-1.0 CWT fish was 183 mm, 215 mm, 

 214 mm, and 281 mm in May, June, July, and Sep- 

 tember, respectively, for all years combined (Table 



5). Age-0.1 fish were generally larger than the age- 

 1.0 fish, averaging 294 mm, 310 mm, and 389 mm 

 FL in May, June, and September, respectively (Table 

 5). Except for three fish caught in September, age- 

 0.0 fish were considerably smaller than the other two 

 age classes, averaging 124 mm, 115 mm, and 137 mm 

 FL in June, July, and August, respectively (Table 5). 

 Length-frequency distributions (on a catch/set ba- 

 sis) of juvenile chinook salmon are shown for the 

 three standard sampling areas (A, B, and C) for all 

 years combined (Fig. 2, top), for sampling in July 

 1984 off northern California (CA) and Vancouver Is- 

 land (BO and for sampling off the mouth of the Co- 



