Prey Engulfment as the Dominant Pathway of Methylmercury Uptake in a Heterotrophic Dinoflagellate Experiment

These data include all relevant analyses from methylmercury (MeHg) uptake experiments utilizing the heterotrophic dinoflagellate Oxyrrhis marina (urn:lsid:marinespecies.org:taxname:109902), varying salinity, temperature, and dissolved organic matter (DOM) source – including heat-killed O. marina. The goal of these experiments was to determine whether uptake from the dissolved phase or prey engulfment would contribute more to cellular MeHg accumulation. All experimental treatments were triplicated and had a control with no added MeHg. These studies support the following hypotheses: MeHg uptake is higher in the presence of phytoplankton prey, uptake is significantly lower at a low salinity (11 compared to 17 and 34), and temperature (at 12, 15, and 22°C) has no effect on MeHg uptake.本数据集涵盖了以异养甲藻海洋尖尾藻（Oxyrrhis marina，urn:lsid:marinespecies.org:taxname:109902）为实验对象的甲基汞（methylmercury, MeHg）摄取相关全部分析内容，实验中设置了不同盐度、温度及溶解性有机质（dissolved organic matter, DOM）来源（包括热灭活的O. marina）。本实验的核心目标为探明：是溶解相摄取还是猎物吞噬对细胞内甲基汞累积的贡献更大。所有实验处理组均设置三次生物学重复，并设置未添加甲基汞的对照组。 本研究验证了如下假说：当存在浮游植物猎物时，甲基汞摄取量更高；低盐度条件下（盐度11相较于17与34）甲基汞摄取量显著降低；而温度（12、15及22℃）对甲基汞摄取无显著影响。