Morphology of three benthic diatoms from a tropical mangrove in Hainan Island, China: Gyrosigma centropunctatum sp. nov., G. dongzhaiense sp. nov. and G. orbitum Thaler et Kaczmarska

IF 1.9 3区生物学 Q2 MARINE & FRESHWATER BIOLOGY

Diatom Research Pub Date : 2020-07-02 DOI:10.1080/0269249x.2020.1800518

Yuhang Li, T. Nagumo, Zhongmin Sun, Kuidong Xu

引用次数: 3

Abstract

Three benthic Gyrosigma species isolated from sediments of a tropical mangrove in Hainan Island, China, are described using light, scanning and transmission electron microscopy: G. centropunctatum sp. nov., G. dongzhaiense sp. nov. and G. orbitum Thaler et Kaczmarska. Gyrosigma centropunctatum is a tube-dwelling species possessing a unique row of pores on either side of the central area. Gyrosigma dongzhaiense differs from congeners by a combination of small cell size, linear-sigmoid outline, and higher stria density. Gyrosigma orbitum is another tube-dwelling species, which possesses two remarkable oval pits on the external central area. This study expands our knowledge of the marine species diversity and distribution of Gyrosigma in the tropical Western Pacific. We discuss the taxonomic significance of tubes in the species identification of Gyrosigma.

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海南岛热带红树林中三种底栖硅藻的形态：Gyrosigma centropunctatum sp.nov.、G.dongzhainse sp.nov..和G.orbitum Thaler et Kaczmarska

利用光学、扫描和透射电子显微镜描述了从中国海南岛热带红树林沉积物中分离出的三种底栖Gyrosigma物种：G.centropunctatum sp.nov.、G.dongzhaiense sp.nov..和G.orbitum Thaler et Kaczmarska。着丝点陀螺是一种管栖物种，在中心区域的两侧都有一排独特的孔。东寨回旋西格玛与同类的不同之处在于细胞大小小、线形S形轮廓和更高的条纹密度。圆脊灰蝶是另一种管栖物种，在外部中心区域有两个显著的椭圆形凹坑。这项研究扩展了我们对热带西太平洋海洋物种多样性和Gyrosigma分布的了解。我们讨论了管在陀螺虫物种鉴定中的分类学意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Diatom Research 生物-海洋与淡水生物学

CiteScore

2.70

自引率

16.70%

发文量

审稿时长

>12 weeks

期刊介绍： Diatom Research is the journal of the International Society for Diatom Research. The journal is published quarterly, in March, June, September and December, and welcomes manuscripts on any aspect of diatom biology. In addition to full-length papers, short notes and reviews of recent literature are published which need not contain all the sections required for full-length papers; we see these as being necessary to record information which is of interest but which cannot be followed up in detail. Discursive “Opinion” papers are encouraged which would not necessarily follow the normal lay-out. If extremely long papers are to be offered, the author(s) should contact the editors first to discuss any problems. Book reviews, obituaries and meeting reports can be published. All papers will be subject to critical review by the editors and referees, as appropriate to their content. Papers will be accepted in English only.