In both 1988 and 1989, he yearling smolts were released 43 days earlier than the subyearling smolts. We used comparisons between yearling and subyearling smolts only as ma index of success because of the differences in release time and size. We did observe differences in migration rate and duration between yearling and subyearling smolts. Table l . Release information for Rapid River stock subyearling and yearling spring chinook molts released from Lookingglass Hatchery.
Standard deviation is presented in parentheses.
Zaugg et al. However, the true measure of success is survival to adulthood. Them were no hatchery recoveries of any marked adults from subyearling smolt releases in either year. Lindsay at al. References Carmichael, R. W., R. Boyce, and J. Johnson.