徐雨,李阳,徐奎栋
1.中国科学院海洋研究所海洋生物分类与系统演化实验室, 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物与生物技术功能实验室, 山东 青岛 266071;4.中国科学院海洋大科学研究中心, 山东 青岛 266071

摘要:
为探究热带西太平洋海山生物多样性，2016年利用"发现"号遥控无人潜水器（ROV）对西太平洋马里亚纳海沟附近的M2海山进行了采样调查，其中获得了3个深水金相柳珊瑚样本。通过光学显微镜和扫描电镜观察，鉴定其为黑发金相柳珊瑚Metallogorgia melanotrichos （Wright&Studer，1889）和长刺金相柳珊瑚Metallogorgia macrospina Kükenthal，1919。这两种金相柳珊瑚均为该区域的新记录种，对其作了详细的形态描述，并依据特征性状对该属所有物种作了分类检索。
关键词:八放珊瑚亚纲Octocorallia钙轴珊瑚亚目Calcaxonia金相柳珊瑚属Metallogorgia分类深海
DOI：10.11759/hykx20190312001
分类号:Q959.134
基金项目:科技基础资源调查专项（2017FY100804）；青岛海洋科学与技术试点国家实验室鳌山卫科技创新计划项目（2016ASKJ05）

First records of two species of Metallogorgia (Anthozoa: Alcyonacea: Chrysogorgiidae) from a seamount near the Mariana Trench in the Western Pacific Ocean
XU Yu^1,2, LI Yang^1,3,4,5, XU Kui-dong^1,3,4,2,5
1.Laboratory of Marine Organism Taxonomy and Phylogeny, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;2.University of Chinese Academy of Sciences, Beijing 100049, China;3.Marine Biology and Biotechnology Laboratory, Pilot National Labora & shy;4.tory for Marine Science and Technology(Qingdao), Qingdao 266071, China;5.Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
Abstract:
To explore the deep-sea biodiversity of seamounts in the tropical Western Pacific Ocean, we collected samples from a seamount near the Mariana Trench by a remotely operated vehicle (ROV) "Faxian" in 2016. Three specimens of Metallogorgia were collected among the samples. We then conducted a taxonomic study on the specimens using light and scanning electron microscopic observations. These specimens were identified as M. melanotrichos (Wright & Studer, 1889) and M. macrospina Kükenthal, 1919. Both species are new records in this area of the sea. We have also provided detailed morphological descriptions of both species and a dichotomous key to all known species of Metallogorgia.
Key words:OctocoralliaCalcaxoniaMetallogorgiataxonomydeep sea





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