An analysis of Chinook survival in Puget Sound and growth patterns in juvenile fish are indicating that the growth period between May to July when the Chinook are primarily feeding offshore is highly correlated with adult survival rates.    Dave Beauchamp from the University of Washington explained that a study looking at feeding rates, food availability, water temperatures and competition found that the adult survival rate was highly correlated with July body weights and there was no correlation with weights in September.  The primary diet items for that critical growth and feeding time were crab larvae and adult and terrestrial insects.