Figure 4. Probability of en route mortality declined with size.
The blue line is the median estimate from a bionomial logistic
regression with effects of body length and sex and the grey polygon is
the 95% confidence interval of the estimate. Inset boxplots of length
of fish that were measured alive at the Henshaw Creek weir (blue) and
those surveyed dead en route on the Koyukuk River mainstem (red).