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| 黑潮及相邻海域表层砂壳纤毛虫分布模式:以夏季黄海、东海至西太平洋断面为例 |
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宣俊1,2, 李海波1,3,4, 王超锋1,3,4, 董逸1,3,4, 赵苑1,3,4, 赵丽1,3,4, 张武昌1,3,4
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1.中国科学院海洋生态与环境科学重点实验室(中国科学院海洋研究所), 山东 青岛 266071;2.中国科学院大学, 北京 100049;3.青岛海洋科学与技术试点国家实验室 海洋生态与环境科学功能实验室, 山东 青岛 266237;4.中国科学院海洋大科学研究中心, 山东 青岛 266071
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| 摘要: |
| 2019年夏季对沿黄、东海至西太平洋跨越黑潮一个断面（122°E~145°E）的表层砂壳纤毛虫群落进行调查，研究了黑潮中砂壳纤毛虫与相邻水体的差异。根据水文环境及各站位所处的空间位置，我们将研究区域划分为大洋边缘区域、黑潮区域和大洋区域。各站位砂壳纤毛虫的丰度范围为3.95~31.94 ind·L-1，种丰富度范围为6~24种。共发现砂壳纤毛虫21属42种，有7种优势种，分别为缩短原纹虫（Protorhabdonella curta）、杆状真铃虫（Eutintinnus stramentus）、卢氏真铃虫（E.lusus-undae）、镯形囊坎虫（Ascampbelliella armilla）、管状真铃虫（E.tubulosus）、长形旋口虫（Helicostomella longa）和斯廷细瓮虫（Steenstrupiella steenstrupii），其中缩短原纹虫为最优势种类，在每个站位均有检出。根据33种常见种的丰度分布模式，将砂壳纤毛虫划分为4个类群：类群Ⅰ为广布类群，丰度最高；类群Ⅱ主要出现在断面中部，受黑潮影响较大，其中酒杯类管虫（Dadayiella ganymedes）可以作为黑潮的指示种；类群Ⅲ主要出现大洋区域；类群Ⅳ则主要分布于大洋边缘区域，丰度较低。黑潮区域砂壳纤毛虫群落有不同于其他两个区域的种类，种丰富度最高。本研究首次对黑潮及其相邻海域中表层砂壳纤毛虫的分布模式进行分析，该结果有助于理解黑潮对浮游生物地理分布的影响。 |
| 关键词: 砂壳纤毛虫 群落 指示种 黑潮 西太平洋 |
| DOI：10.11759/hykx20210329002 |
| 分类号:Q958.8 |
| 基金项目:国家自然科学基金（41706192，41576164）；中国博士后科学基金（2020M672149）；国家重点研发计划课题（2017YFA0603204） |
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| Summertime tintinnid community in the surface waters of the Kuroshio and adjacent waters:A case study along a transect from the Yellow Sea and East China Sea to the West Pacific |
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XUAN Jun1,2, LI Hai-bo1,3,4, WANG Chao-feng1,3,4, DONG Yi1,3,4, ZHAO Yuan1,3,4, ZHAO Li1,3,4, ZHANG Wu-chang1,3,4
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1.CAS Key Laboratory of Marine Ecology and Environment Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;2.University of Chinese Academy of Sciences, Beijing 100049, China;3.Laboratory of Marine Ecology and Environmental Science, Pilot National Laboratory for Marine Science and Technology(Qingdao), Qingdao 266237, China;4.Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
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| Abstract: |
| The surface tintinnid community was investigated in the summer of 2019 along a transect (122°E-145°E) running across the Kuroshio from the Yellow Sea and East China Sea to the West Pacific. The differences between the surface tintinnid community in the Kuroshio and adjacent ocean bodies were studied. According to the hydrological environment and spatial location of each station, we divided the research area into the ocean margin area, Kuroshio area, and ocean area. Tintinnid abundance ranged from 3.95 to 131.94 ind./L at each station. Species richness ranged from 6 to 24. A total of 42 species in 21 genera were identified. Seven dominant species were detected, including Protorhabdonella curta, Eutintinnus stramentus, E. lusus-undae, Ascampbelliella armilla, E. tubulosus, Helicostomella longa, and Steenstrupiella steenstrupii. P. curta was the most dominant species and was identified at every station. The 33 common species were divided into four groups based on the abundance distribution pattern of each species. GroupⅠwas distributed widely and had the highest abundance. GroupⅡmainly appeared in the middle of the transect and was greatly affected by the Kuroshio, among which Dadayiella ganymedes could be an indicator species of the Kuroshio. Group Ⅲ was mainly distributed in the oceanic areas, while Group Ⅳ was mainly distributed in marginal areas with a low abundance. The tintinnid community in the Kuroshio area had different species from those in the other two areas, and species richness was the highest. These results will help to understand the effect of the Kuroshio on the geographical distribution of plankton. |
| Key words: tintinnid community indicator species Kuroshio West Pacific |
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