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

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.

本研究采用多孔培养板（well-plates）培养实验法，测定了异养原生生物（heterotrophic protist）科氏多裂藻（Polykrikos kofoidii）取食3种不同亚历山大藻（Alexandrium）的摄食率。实验中，以科氏多裂藻为研究对象，其摄食的猎物混合体系由假链状亚历山大藻（A. pseudogonyaulax，菌株L4-B9）与链状亚历山大藻（A. catenella，菌株Alex 5），或利马亚历山大藻（A. limii，菌株Atay99Shio-02）构成，且每个混合体系中均有一种猎物经荧光染料CMAC染色。该荧光染料对科氏多裂藻的摄食行为无显著影响，因此同一猎物混合体系的不同染色分组可合并统计。本数据集包含本次实验采集的全部相关数据，包括科氏多裂藻的细胞计数及其摄食的猎物细胞数。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）实验室开展。