Emergence of the Zoonotic Biliary Trematode Pseudamphistomum truncatum in Grey Seals (Halichoerus grypus) in the Baltic Sea
Fig 2
A) Proportion of grey seals (Halichoerus grypus) from the Baltic coast of Sweden infected with Pseudamphistomum truncatum per year from 2002 to 2013 unadjusted for explanatory variables. The proportion of infected seals increases significantly over time (p<0.01, log-linear regression). B) Predicted proportion of grey seals from the Baltic coast of Sweden infected with P. truncatum per year from 2002 to 2013, adjusted proportions using an average of 8 years of age and observed mean values for sex and cause of death. This reduces the variance in the logistic model (p< 0.001, full logistic model compared to intercept only).