Characteristics of eukaryotic microalgae and their environmental correlation in the northern Yellow Sea
SONG Lun1, BI Xiang-dong2, FU Jie1, SONG Guang-jun1, WU Jin-hao1, LIU Yin3, LIU Su-xuan3
1. Key Laboratory of Marine Biological Resources and Ecology, Liaoning Ocean and Fisheries Science Research Institute, Dalian 116023, China; 2. Key Laboratory of Aquatic-Ecology and Aquaculture of Tianjin, College of Fishery, Tianjin Agricultural University, Tianjin 300384, China; 3. Dalian Ocean University, Dalian 116023, China
Abstract:The size fractions of eukaryotic microalgae in northern Yellow Sea were studied by high-throughput sequencing and molecular identification classification technology in 2019. The results showed that the size fractions of eukaryotic microalgae were dominated by medium and small in spring, small and large in summer, and large in autumn. The proportions of small-sized, medium-sized and large-sized eukaryotic microalgae were about 39:51:11, 40:24:36, and 26:13:62 in spring, summer and autumn respectively. Micromonas pusilla and Ostreococcus tauri were the dominant species of small-sized eukaryotic microalgae, Karlodinium veneficum was dominant in medium-sized eukaryotic microalgae, and Guinardia delicatula, Alexandrium hiranoi, and Gonyaulax polygramma were dominant in large-sized of microalgae. In general, Karlodinium veneficum (medium-sized microalgae) were the dominant species in spring (21.3%), Alexandrium hiranoi (large-sized microalgae) in summer (23.6%) and Gonyaulax polygramma (large-sized microalgae) in autumn (56.6%). Toxic dinoflagellate was dominant in eukaryotic microalgae in northern Yellow Sea, which may cause high risk of shellfish poisoning toxins accumulation. Brown tide causative species Ostreococcus tauri and Aureococcus anophagefferens, small-sized microalgae, posed potential threat to shellfish aquaculture in northern Yellow Sea.
宋伦, 毕相东, 付杰, 宋广军, 吴金浩, 刘印, 刘苏萱. 黄海北部真核微藻粒级结构及环境关联[J]. 中国环境科学, 2021, 41(3): 1336-1344.
SONG Lun, BI Xiang-dong, FU Jie, SONG Guang-jun, WU Jin-hao, LIU Yin, LIU Su-xuan. Characteristics of eukaryotic microalgae and their environmental correlation in the northern Yellow Sea. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(3): 1336-1344.
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