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Species composition of dinoflagellates cysts in ballast tank sediments of foreign ships berthed in Jiangyin Port

Zhang Jiazhen, Gao Chunlei, Li Yan, Sun Ping, Wang Zongling, 1 First Institute of Oceanography, Ministry of Natural Resources, Qingdao, Shandong 2660612 Laboratory of Science and Engineering for Marine Ecological Environment, Ministry of Natural Resources, Qingdao, Shandong 2660613 Laboratory of Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong 266071
2020 Biodiversity Science  

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In order to explore the species composition and invasion risk of dinoflagellate resting cysts in the sediments of ballast tanks of foreign ships, we identified and analyzed the species of living dinoflagellate cysts in the sediments of five foreign ships ballast tanks in Jiangyin Port based on the morphological characteristics and molecular biology information of dormant cysts and germinating cells. A total of 29 species of dinoflagellate cysts (excluding three unkonwn species), belonging to
more » ... yaulacoid group, Calcoidinellid group, Gymnodinioid group, Diplopsalid group and Protoperidinioid group, were recorded in ballast sediments. The density of living cysts ranged from 0.73 to 44.3 cysts/g DW. Cysts of toxic and harmful dinoflagellate Alexandrium tamarense species complex, Protoceratium reticulatum, and Gonyaulax spinifera were found in five ships. In addition, a variety of unrecorded dinoflagellate cyst types in Chinese coasts have been found, one of which was identified as Alexandrium insuetum. Germination and incubation experiments showed that it can proliferate in coastal waters of China. Therefore, Alexandrium insuetum has potential invasion risk and possibility of bloom in coastal China.
doi:10.17520/biods.2019253 fatcat:fiw2btippjavbmiom3xdedyyvi
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Zhang Jiazhen, Gao Chunlei, Li Yan, Sun Ping, Wang Zongling, 1 First Institute of Oceanography, Ministry of Natural Resources, Qingdao, Shandong 2660612 Laboratory of Science and Engineering for Marine Ecological Environment, Ministry of Natural Resources, Qingdao, Shandong 2660613 Laboratory of Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong 266071. "Species composition of dinoflagellates cysts in ballast tank sediments of foreign ships berthed in Jiangyin Port." Biodiversity Science 28.2 (2020) 144-154