Mapping the resting cysts of dinoflagellate Alexandrium catenella along the coast of Qinhuangdao,China

作     者：Wenjiao TANG Huixia GENG Yanjuan XI Qingchun ZHANG Xuexi TANG Rencheng YU Wenjiao TANG;Huixia GENG;Yanjuan XI;Qingchun ZHANG;Xuexi TANG;Rencheng YU

作者机构：College of Marine Life ScienceOcean University of ChinaQingdao 266003China CAS Key Laboratory of Marine Ecology and Environmental SciencesInstitute of OceanologyChinese Academy of SciencesQingdao 266071China Key Laboratory for Marine Ecology and Environmental SciencePilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China University of Chinese Academy of SciencesBeijing 100049China Center for Ocean Mega-ScienceChinese Academy of SciencesQingdao 266071China Hebei Academy of Ocean and Fishery ScienceQinhuangdao 066200China 

出 版 物：《Journal of Oceanology and Limnology》 (海洋湖沼学报（英文）)

年 卷 期：2022年第40卷第6期

页      面：2312-2321页

核心收录：

学科分类：0710[理学-生物学] 0908[农学-水产] 07[理学] 0707[理学-海洋科学] 0815[工学-水利工程] 0713[理学-生态学] 

基　　金：Supported by the National S&T Basic Resources Investigation Program of China(No.2018YF100206) the National Key R&D Program of China(Nos.2019YFC1407901,2017YFC1600701)from the Ministry of Science and Technology(MoST) 

主　　题：harmful algal bloom(HAB) Alexandrium catenella resting cyst paralytic shellfish toxin(PST) Qinhuangdao 

摘      要：Dinoflagellate Alexandrium catenella is a cosmopolitan bloom-forming species with complex life cycle,the formation and germination of resting cysts are critical for its bloom *** the coastal waters of Qinhuangdao,*** has been identified as the major causative agent for paralytic shellfish poisoning,but there is little knowledge concerning its resting cysts in this *** this study,three surveys were carried out along the coast of Qinhuangdao from 2020 to 2021 to map the distribution of *** resting cysts,using a quantitative PCR(qPCR)assay specific for *** resting cysts were detected in surface sediments during all the three surveys,and their distribution patterns were *** abundance of resting cysts(maximum 1300 cysts/g sediment(wet weight))were found in a region(119.62°E-119.99°E,39.67°N-39.98°N)northeast to the coastal waters of Qinhuangdao,where surface sediments were mainly composed of clay and silt(percentage above 50%).Prior to the formation of the *** bloom in March 2021,the abundance of *** vegetative cells in seawater had extremely significant positive correlation with the abundance of resting cysts in surface sediments,reflecting the important role of resting cysts in the initiation of *** *** far as we know,this is the first report on the distribution of *** cysts along the coast of *** results will of fer a sound basis for the future monitoring and mitigation of toxic *** blooms and paralytic shellfish poisoning events in this region.