黄河口及邻近海域表层沉积物甲藻孢囊多样性研究  

Diversity of Dinoflagellate Cysts in Surface Sediments in the Yellow River Estuary and Its Adjacent Sea Area

作　　者：高晨 王晓峰 石雅君[2] 马元庆 隋傅 姜向阳 刘丽娟 姜会超 宋秀凯 GAO Chen;WANG Xiaofeng;SHI Yajun;MA Yuanqing;SUI Fu;JIANG Xiangyang;LIU Lijuan;JIANG Huichao;SONG Xiukai(Shandong Key Laboratory of Marine Ecological Restoration,Shandong Marine Resource and Environment Research Institute,Yantai 264006,China;Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences,Yantai 264003,China)

机构地区：[1]山东省海洋资源与环境研究院山东省海洋生态修复重点实验室,山东烟台264006 [2]中国科学院烟台海岸带研究所,山东烟台264003

出　　处：《海洋科学进展》2024年第4期677-689,共13页Advances in Marine Science

基　　金：山东省海洋局财政项目(HYSTJCPJ2021-2023)。

摘　　要：2022年11月采集了黄河口及邻近海域16个站位的表层沉积物样品,鉴定出35种甲藻孢囊(隶属13个属)和3种未定种,其中优势种为甲藻孢囊A型、原多甲藻(Brigantedinium sp.1)、膝沟藻(Spiniferites spp.)、原多甲藻(Brigantedinium spp.)、网状原角管藻(Operculodinium centrocarpum)、甲藻孢囊C型和甲藻孢囊B型。其中,孢囊物种丰富度指数(d _(Ma))为3.66~5.91,多样性指数(H’)为2.72~3.68,均匀度指数(J)为0.53~0.73。孢囊总丰度为35~921个/g(干重,下同),平均丰度为346个/g。研究表明,从黄河口及邻近海域和莱州湾至渤海中部海域甲藻孢囊多样性和丰度逐渐升高,高比率的异养型甲藻孢囊显示了该海域的富营养化程度较高;2种产虾夷扇贝毒素(Yessotoxin,YTX)甲藻(具刺膝沟藻Gonyaulax spinifera和多边舌甲藻Lingulodinium polyedrum)孢囊和3种产麻痹性贝类毒素(PSP)甲藻(链状亚历山大藻Alexandrium catenella、微小亚历山大藻Alexandrium minutum和链状裸甲藻Gymnodinium catenatum)孢囊调查海域分布广泛但丰度比较低。Dinoflagellate cysts in the surface sediment were collected and analyzed at 16 stations in the Yellow River Estuary in 2022.Thirty-five dinoflagellate cyst taxa of thirteen genera and three uncertain taxa were identified from samples.The dominant taxa were Cyst A,Brigantedinium sp.1,Spiniferites spp.,Brigantedinium spp.,Operculodinium centrocarpum,Cyst C and Cyst B.Cyst richness index(dMa)ranged 3.66-5.91;species diversity index(H’)ranged 2.72-3.68;evenness index(J)ranged 0.53-0.73.The total cyst abundance ranged between 35 cysts/g and 921 cysts/g(in dry weight),and the average was 346 cysts/g(in dry weight).The results showed that the total abundance and diversity of dinoflagellate cysts displayed a gradually increase from both Yellow River Estuary and Laizhou Bay the central to the central Bohai Sea.The high ratio of heterotypic dinoflagellate cysts indicated a high degree of eutrophication in this sea area.The cysts of two toxic dinoflagellate species(Gonyaulax spinifera and Lingulodinium polyedrum),which produce Yessotoxin(YTX),and the cysts of three toxic dinoflagellate species(Alexandrium catenella,Alexandrium minutum and Gymnodinium catenatum),which produce paralytic shellfish poisoning(PSP),were distributed widely in the Yellow River Estuary,but with relatively low abundance.

关 键 词：甲藻孢囊 黄河口 沉积物 有毒有害赤潮 

分 类 号：Q178.53[生物学—水生生物学] X145[生物学—普通生物学]