Parasite-driven cascades or hydra effects: susceptibility and foraging depression shape parasite-host-resource interactions

This contains data for the manuscript listed in the title.

We measured the foraging rates of individual zooplankton hosts, Daphnia dentifera, on phytoplankton resources, Ankistrodesmus falcatus, in the presence of fungal parasites of zooplankton, Metschnikowia bicuspidata. Some of these data are previously published (Genotypes12_foraging.csv by Strauss, Alexander T., et al. "Genotypic variation in parasite avoidance behaviour and other mechanistic, nonlinear components of transmission." Proceedings of the Royal Society B 286.1915 (2019): 20192164.) and some are published now for the first time (Genotype3_foraging.csv).

In addition, we present novel evidence from a mesocosm experiment (Mesocosm_data1.csv-Mesocosm_data20.csv) of populations of each genotype or each pair of genotypes with phytoplankton resources and fungal parasites present or absent; our last treatment was low or high nutrient supply for the phytoplankton. With data on infection prevalence, host density, and phytoplankton density, we show how host traits and nutrients control outcomes for prevalence, host density, and phytoplankton density.

These data may be reused with appropriate citation.

本数据集包含标题所示研究手稿的配套实验数据。我们测定了在浮游动物真菌寄生虫两核梅氏酵母（Metschnikowia bicuspidata）存在的条件下，单个浮游动物宿主齿状溞（Daphnia dentifera）对浮游植物饵料针形纤维藻（Ankistrodesmus falcatus）的摄食速率。其中部分数据已发表于既往研究：Strauss、Alexander T.等人于2019年发表在《英国皇家学会学报B辑（Proceedings of the Royal Society B）》的论文"Genotypic variation in parasite avoidance behaviour and other mechanistic, nonlinear components of transmission"，对应数据文件为Genotypes12_foraging.csv，该论文刊载于286卷1915期，文章编号为20192164；其余数据为本次首次发表，对应数据文件为Genotype3_foraging.csv。此外，本数据集还包含中宇宙实验（mesocosm experiment）的全新实验数据，对应文件为Mesocosm_data1.csv至Mesocosm_data20.csv。该实验设置了各基因型或基因型对与浮游植物饵料共培养的处理组，并设置了真菌寄生虫存在、缺失两个处理水平，同时设置了浮游植物营养供给量为低、高两个梯度的对照处理。本数据集包含感染率、宿主密度及浮游植物密度的相关观测数据，通过分析这些数据，我们揭示了宿主性状与营养条件如何调控感染率、宿主密度及浮游植物密度的动态变化。本数据集可在恰当引用的前提下重复使用。