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.文件列表：Peacock2015_Ecosphere_Supplement.csv（MD5值：3e7c19c31b83ac4911b19a5056c3906b） 数据集说明：Peacock2015_Ecosphere_Supplement.csv收录了捕食实验的汇总数据，实验以幼粉红鲑（juvenile pink salmon）和幼狗鲑（juvenile chum salmon）为猎物，以银大麻哈鱼幼鱼（coho salmon smolts）为捕食者。各列标题说明如下： - 实验编号（Experiment）：取值范围为1至27，每项实验包含两组配对试验，分别使用清洁猎物与受寄生劣质猎物； - 试验日期（Date）：试验开展的具体日期； - 实验网箱编号（Net pen）：试验所在的两个实验网箱之一（详见图A3）； - 处理组（Treatment）：分为无寄生组与有寄生组，对应试验使用的猎物分别为未感染海虱（sea louse），或至少携带1只Ⅱ期黏幼体（chalimus II）及以上发育阶段海虱的个体； - 银大麻哈鱼捕食者数量（Number of coho）：试验中使用的银大麻哈鱼捕食者个体总数； - 试验时长（h）（Length of trial (h)）：捕食者可接触猎物的总时长，单位为小时； - 试验初始粉红鲑数量（Number of pink at start）：试验开始时的粉红鲑猎物个体数； - 试验初始狗鲑数量（Number of chum at start）：试验开始时的狗鲑猎物个体数； - 粉红鲑捕食量（Number of pink consumed）：试验期间被捕食的粉红鲑猎物数量，计算方式为试验初始粉红鲑数量减去试验结束时剩余粉红鲑数量； - 狗鲑捕食量（Number of chum consumed）：试验期间被捕食的狗鲑猎物个体数； - 捕食偏好指数（Preference）：根据正文公式8计算得到的α值。