Predator-prey interactions between the heterotrophic protist Polykrikos kofoidii and prey mixtures of three Alexandrium strains (A. catenella, A. limii, A. pseudogonyaulax)@en

The ingestion rates of the heterotrophic protist Polykrikos kofoidii feeding on three different species of Alexandrium were determined by means of incubation experiments in well-plates. In this experiment P. kofoidii was subjected to prey mixtures consisting of A. pseudogonyaulax (strain L4-B9) and A. catenella (strain Alex 5) or A. limii (strain Atay99Shio-02), whereby one prey was dyed with the fluorescent dye CMAC. The dye had no influence on the feeding behaviour of P. kofoidii and thus dye combinations of the same prey mixtures were combined. This dataset contains all data collected within this experiment including cell counts and ingested prey cells of P. kofoidii. The experiments were carried out on January 18, 2023 in the laboratories at the Alfred-Wegener-Institute in Bremerhaven, Germany.本研究借助多孔培养板（well-plates）内的培养实验，测定了异养原生生物（heterotrophic protist）科氏多角藻（Polykrikos kofoidii）对3种不同亚历山大藻（Alexandrium）的摄食率。实验中，科氏多角藻的猎物混合体系分为两类：其一由假囊裸甲藻（A. pseudogonyaulax，菌株L4-B9）与链状亚历山大藻（A. catenella，菌株Alex 5）组成，其二由假囊裸甲藻（A. pseudogonyaulax，菌株L4-B9）与利马亚历山大藻（A. limii，菌株Atay99Shio-02）组成；每组混合体系内均有一种猎物经荧光染料CMAC（CMAC）染色。实验证实，该荧光染料对科氏多角藻的摄食行为无显著影响，因此同一猎物混合体系下的染色组与非染色组数据可合并统计。本数据集收录了本次实验采集的全部相关数据，涵盖科氏多角藻的细胞计数结果及其摄食的猎物细胞数量。本次实验于2023年1月18日在德国不来梅港的阿尔弗雷德·魏格纳研究所（Alfred-Wegener-Institute）实验室完成。