Lesion frequencies and sizes after fish feces treatment on coral samples collected on the north shore of Mo’orea, French Polynesia, Oct 2020 to Jun 2021

This datafile contains frequencies and sizes (number of polyps killed) developed in coral tissues after the application and removal of fish feces to test whether fish from different guilds affect coral health in distinct ways.There were five treatments: fresh feces from a corallivorous butterflyfish (FC); fresh feces from a grazer/detritivore (FG); sterilized feces from a corallivorous butterflyfish (SC); sterilized feces from a grazer/detritivore (SG); no-feces control (C). For the fresh feces treatments (FC, FG), we applied 100 µl of fresh feces isolated from the hindgut of the butterflyfish Chaetodon ornatissimus (FC) or the grazer/detritivore Ctenochaetus striatus (FG) directly onto each coral fragment. For the sterilized feces treatments (SC, SG), fecal pellets were sterilized in a pressure cooker for 40 minutes at 120°C and then applied in the same manner as fresh feces. The experiment ran for ~22 hours. The experiment was conducted in three iterations in Mo'orea, French Polynesia, over two years (2020, 2021).

本数据集收录了施加并移除鱼粪后，珊瑚组织中形成的损伤频率与损伤规模（即死亡珊瑚水螅体的数量），用于验证不同功能群鱼类对珊瑚健康的影响是否存在显著差异。
本实验共设置5组处理：食珊瑚性蝴蝶鱼新鲜粪便组（FC）、刮食性/碎屑食性鱼类新鲜粪便组（FG）、食珊瑚性蝴蝶鱼灭菌粪便组（SC）、刮食性/碎屑食性鱼类灭菌粪便组（SG）以及无粪便对照组（C）。
针对新鲜粪便处理组（FC、FG），我们将分别从饰带蝴蝶鱼（Chaetodon ornatissimus，对应FC组）和纹尾栉齿刺尾鱼（Ctenochaetus striatus，对应FG组）的后肠中分离得到的新鲜粪便各100 μL，直接滴加至每块珊瑚断片表面。
对于灭菌粪便处理组（SC、SG），粪便颗粒需经高压锅在120℃下灭菌40分钟，后续施加方式与新鲜粪便组完全一致。
本实验周期约为22小时，于2020至2021年间在法属波利尼西亚茉莉雅岛（Mo'orea）完成，共开展3次重复实验。