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

IOCAS-IR

	Mapping the resting cysts of dinoflagellate Alexandrium catenella along the coast of Qinhuangdao, China
	Wenjiao TANG ; Huixia GENG; Yanjuan XI ; Qingchun ZHANG ; Xuexi TANG ; Rencheng YU
发表期刊	Journal of Oceanology and Limnology
ISSN	2096-5508
	2022-11-15
出版年	2022
卷号	v.40 期号:06 页码:234-243
文献类型	CNKI期刊论文
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 dynamics. In the coastal waters of Qinhuangdao, A. catenella has been identified as the major causative agent for paralytic shellfish poisoning, but there is little knowledge concerning its resting cysts in this region. In this study, three surveys were carried out along the coast of Qinhuangdao from 2020 to 2021 to map the distribution of A. catenella resting cysts, using a quantitative PCR(qPCR) assay specific for A. catenella. The resting cysts were detected in surface sediments during all the three surveys, and their distribution patterns were similar. High abundance of resting cysts(maximum 1 300 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 A. catenella bloom in March 2021, the abundance of A. catenella 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 A. catenella blooms. As far as we know, this is the first report on the distribution of A. catenella cysts along the coast of Qinhuangdao. The results will of fer a sound basis for the future monitoring and mitigation of toxic A. catenella blooms and paralytic shellfish poisoning events in this region.
关键词	harmful algal bloom(HAB) Alexandrium catenella resting cyst paralytic shellfish toxin(PST) Qinhuangdao
CNKI专辑号	A;
CNKI专辑名称	基础科学;
CNKI专题号	A006;
CNKI专题名称	生物学;
分类号	Q948.8
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(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)
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/187265
专题	中国科学院海洋研究所
作者单位	1.CollegeofMarineLifeScience,OceanUniversityofChina 2.CASKeyLaboratoryofMarineEcologyandEnvironmentalSciences,InstituteofOceanology,ChineseAcademyofSciences 3.KeyLaboratoryforMarineEcologyandEnvironmentalScience,PilotNationalLaboratoryforMarineScienceandTechnology(Qingdao) 4.CenterforOceanMega-Science,ChineseAcademyofSciences 5.HebeiAcademyofOceanandFisheryScience 6.UniversityofChineseAcademyofSciences
推荐引用方式 GB/T 7714	Wenjiao TANG,Huixia GENG,Yanjuan XI,et al. Mapping the resting cysts of dinoflagellate Alexandrium catenella along the coast of Qinhuangdao, China. 2022.