Supplement 1. Prey preference data from predation experiments.

File List Peacock2015_Ecosphere_Supplement.csv (MD5: 3e7c19c31b83ac4911b19a5056c3906b) Description Peacock2015_Ecosphere_Supplement.csv – Summary data from predation experiments involving juvenile pink and chum salmon prey and coho salmon smolts as predators. Column headings are: Experiment – Experiment numbers 1 through 27, where each experiment consisted of paired trials; one with clean prey and one with lousy prey. Date – Date of the trial. Net pen – Which of the two experimental net pens the trial took place in (see Fig. A3). Treatment – No lice or lice, depending on whether the trial used prey that had no sea lice or were infested with at least one sea louse of a chalimus II or more advanced stage. Number of coho – number of coho predators in the trial. Length of trial (h) – the duration that the predators had access to prey in hours. Number of pink at start – the number of pink salmon prey at the beginning of the trial. Number of chum at start – the number of chum salmon prey at the beginning of the trial. Number of pink consumed – the number of pink salmon prey consumed during the trial calculated as the number of pink at the start minus the number of pink at the end. Number of chum consumed - the number of chum salmon prey consumed during the trial. Preference – the value of α calculated by Eq. 8 in the main text.