Additional file 5: Figure S2. of Enhanced transcriptomic responses in the Pacific salmon louse Lepeophtheirus salmonis oncorhynchi to the non-native Atlantic Salmon Salmo salar suggests increased parasite fitness

The salmon louse response cannot be explained by acclimation to the host. A reciprocal experiment was conducted by placing lice originally collected from Atlantic (at) or Sockeye Salmon (sk) on either Atlantic Salmon (AT) or Sockeye Salmon (SK) hosts. Expression of protein synthesis (A), energy metabolism (B) and digestion (C) was significantly higher in lice feeding on Atlantic Salmon (blue boxplots) irrespective of their original host, thus negating the acclimation hypothesis. Differentially expressed transcripts identified by the microarray were profiled using RT-qPCR, and are shown as log2 calibrated normalized relative quantities (CNRQ). Significance was identified by two-way ANOVA (p < 0.05) followed by post-hoc Tukey test to determine pairwise significance. Differences between groups are denoted by lower case letters, while differences over time within a group is denoted by an asterisk (*). (TIF 17046 kb)