Figure 3.

Caligus rogercresseyi growth rate during 2012–2016 in southern Chile (weekly number of new farms as abundance > 3 by study period/the sum of the weeks where farms were active in the study period as a time at risk) using a simple log-linear regression model where the growth rate (r) is the slope of the regression form log(y) = r × t + b. The rising trend line shows the growth rate before the 2013 peak (0.001 per farm-year at risk) and the descending trend line shows the growth rate after the peak (−0.004 per farm-year at risk).