| 发现于我国渤海辽东湾的海洋甲藻新种-渤海异冒藻(Heterocapsa bohaiensis sp. nov.) |
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| 引用本文： | 肖洁,孙娜,张议文,孙萍,李艳,庞敏,李瑞香.发现于我国渤海辽东湾的海洋甲藻新种-渤海异冒藻(Heterocapsa bohaiensis sp. nov.)[J].海洋学报(英文版),2018,37(10):18-27. |
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| 作者姓名： | 肖洁 孙娜 张议文 孙萍 李艳 庞敏 李瑞香 |
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| 作者单位： | 海洋生态环境科学与工程国家海洋局重点实验室, 国家海洋局第一海洋研究所;青岛海洋科学与技术试点国家实验室,盘锦光合蟹业有限公司,大连理工大学盘锦校区食品与环境学院,海洋生态环境科学与工程国家海洋局重点实验室, 国家海洋局第一海洋研究所,海洋生态环境科学与工程国家海洋局重点实验室, 国家海洋局第一海洋研究所;青岛海洋科学与技术试点国家实验室,海洋生态环境科学与工程国家海洋局重点实验室, 国家海洋局第一海洋研究所,海洋生态环境科学与工程国家海洋局重点实验室, 国家海洋局第一海洋研究所 |
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| 基金项目： | The NSFC-Shandong Joint Funded Project under contract No. U1406403; the National Natural Science Foundation of China under contract Nos 41506191 and 41306171. |
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| 摘 要： | A small armed dinoflagellate bloomed in the aquaculture ponds off the coast of Liaodong Bay, Bohai Sea of China,resulting in heavy mortalities of the cultured prawns(Penaeus japonicus) and larvae of Chinese mitten handed crabs(Eriocheir sinensis). The bloom-forming species was successfully isolated, and cellular morphology of the specimen was consequently investigated through light, fluorescent and electron microscopy. The small((14.4±1.6) μm in length) ellipsoid cells show typical Heterocapsa thecal plate arrangement(Po, cp, 5′, 3 a, 7′′, 6 c,5 s, 5′′′, 2′′′′). The episome is evidently bigger than the hyposome. One to three spherical pyrenoids are located above or beside the large elongated nucleus. The body scale is characterized by a triangle basal plate with one central upright and nine peripheral spines. Above all, Heterocapsa bohaiensis could be distinguished from other Heterocapsa species by the combination of the cell size, morphology, cellular structure and body scale. Sequence analyses of both ITS and LSU regions reveal the significant genetic divergence between H. bohaiensis and other established species in this genus, further supporting novelty of this species. Noticeably, different sample treatment methods resulted in morphological variation of the apical pore complex(APC) of H. bohaiensis, which needs to be taken into account in future study.
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| 关 键 词： | 渤海异帽藻 新种 形态结构 ITS 辽东湾 |
| 收稿时间： | 2017/8/1 0:00:00 |
Heterocapsa bohaiensis sp. nov. (Peridiniales: Dinophyceae): a novel marine dinoflagellate from the Liaodong Bay of Bohai Sea, China |
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| XIAO Jie,SUN N,ZHANG Yiwen,SUN Ping,LI Yan,PANG Min and LI Ruixiang.Heterocapsa bohaiensis sp. nov. (Peridiniales: Dinophyceae): a novel marine dinoflagellate from the Liaodong Bay of Bohai Sea, China[J].Acta Oceanologica Sinica,2018,37(10):18-27. |
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| Authors: | XIAO Jie SUN N ZHANG Yiwen SUN Ping LI Yan PANG Min and LI Ruixiang |
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| Institution: | 1.Key Laboratory of Science and Engineering for Marine Ecology and Environment, the First Institute of Oceanography,State Oceanic Administration,Qingdao,China;2.Laboratory for Marine Ecology and Environmental Science,Pilot National Laboratory for Marine Science and Technology (Qingdao),Qingdao,China;3.Guanghe Crab Industry Limited Company,Panjin,China;4.School of Food and Environment,Dalian University of Technology,Panjin,China |
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| Abstract: | A small armed dinoflagellate bloomed in the aquaculture ponds off the coast of Liaodong Bay, Bohai Sea of China, resulting in heavy mortalities of the cultured prawns (Penaeus japonicus) and larvae of Chinese mitten handed crabs (Eriocheir sinensis). The bloom-forming species was successfully isolated, and cellular morphology of the specimen was consequently investigated through light, fluorescent and electron microscopy. The small ((14.4±1.6) μm in length) ellipsoid cells show typical Heterocapsa thecal plate arrangement (Po, cp, 5′, 3a, 7′′, 6c, 5s, 5′′′, 2′′′′). The episome is evidently bigger than the hyposome. One to three spherical pyrenoids are located above or beside the large elongated nucleus. The body scale is characterized by a triangle basal plate with one central upright and nine peripheral spines. Above all, Heterocapsa bohaiensis could be distinguished from other Heterocapsa species by the combination of the cell size, morphology, cellular structure and body scale. Sequence analyses of both ITS and LSU regions reveal the significant genetic divergence between H. bohaiensis and other established species in this genus, further supporting novelty of this species. Noticeably, different sample treatment methods resulted in morphological variation of the apical pore complex (APC) of H. bohaiensis, which needs to be taken into account in future study. |
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| Keywords: | Heterocapsa harmful algal bloom thecal plate body scale ITS |
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