Entomoneis grisslehamnensis, a New Diatom (Bacillariophyceae) from the Baltic Coast of Sweden with taxonomic and ecological notes on Entomoneis paludosa (W. Smith) Reimer

IF 1.9 3区生物学 Q2 MARINE & FRESHWATER BIOLOGY

Diatom Research Pub Date : 2023-01-02 DOI:10.1080/0269249X.2023.2215110

Adil Y. AL-HANDAL, Maja Mucko, P. Peharec Štefanić, A. Wulff

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引用次数: 0

Abstract

The diatom genus Entomoneis includes species with panduriform frustules characterized by a bilobate, elevated keel, sigmoid raphe canal and numerous open, porous girdle bands. During a phytoplankton survey along the Baltic coast of Sweden, we observed numerous Entomoneis cells, some belonging to the well-known Entomoneis paludosa, while others remained unknown. Morphological and ultrastructural studies of the unknown species were performed with light microscopy (LM), scanning (SEM) and transmission (TEM) electron microscopy, and revealed a unique set of morphological characters. Live cells of Entomoneis grisslehamnensis sp. nov. contain one plate-like plastid and show various degrees of torsion about the apical axis. Microscopic features of cleaned frustules are discussed in comparison with similar species. Most importantly, every 2nd to 5th virga is strongly elevated, uniseriate striae are composed of quadrangular areolae with finely perforated hymenes; the winged keel with a discernible raphe canal is structurally strengthened by raphe fibulae with a flattened wing area, and the main part of the valve bulges towards the margins; striation is decussate on the wings and there is one row of raphe canal areolae at the central area. In addition to describing this new species of an underappreciated, yet cosmopolitan diatom genus, we contribute to the taxonomy of E. paludosa with LM, SEM and TEM details, some of which were not sufficiently noted in original descriptions or re-examination of type material and other specimens made by Dalu et al. [2015. A re-examination of the type material of Entomoneis paludosa (W. Smith) Reimer and its morphology and distribution in African waters. Fottea 15: 11–25] and Long et al. [2022. Ultrastructure of three species of Entomoneis (Bacillariophyta) from Lake Qinghai of China, with reference to the external areola occlusions. PhytoKeys 189: 29–50. doi:10.3897/phytokeys.189.78149].

查看原文本刊更多论文

瑞典波罗的海沿岸一种新硅藻(硅藻科)&对paludosa (W. Smith) Reimer的分类和生态学注释

硅藻属包括具有双叶状、凸起的龙骨、乙状形缝管和许多开放、多孔的束带的panduriform截体的物种。在瑞典波罗的海沿岸的一次浮游植物调查中，我们观察到许多Entomoneis的细胞，其中一些属于众所周知的Entomoneis paludosa，而另一些则是未知的。利用光学显微镜(LM)、扫描电镜(SEM)和透射电镜(TEM)对未知种进行了形态学和超微结构研究，发现了一组独特的形态学特征。昆虫(Entomoneis grisslehamnensis sp. 11 .)的活细胞含有一个板状质体，其顶轴有不同程度的扭转。讨论了清洗后结晶体的显微特征，并与同类品种进行了比较。最重要的是，每隔2 ~ 5个处女座强烈隆起，单列条纹由四边形的乳晕和精细穿孔的处女膜组成;具有明显缝道的翼龙骨在结构上由翼面积扁平的缝腓骨加强，阀的主体部分向边缘凸起;翅上有条纹，中部有一排中缝管乳晕。除了描述这一未被充分认识但却广泛存在的硅藻属的新物种外，我们还利用LM、SEM和TEM细节对E. paludosa进行了分类，其中一些细节在Dalu等人[2015]的原始描述或重新检查模式材料和其他标本中没有得到充分的注意。非洲水域帕鲁多沙(W. Smith) Reimer昆虫类型材料及其形态和分布的再研究。[foottea 15: 11-25]， Long等。[2022]青海湖三种硅藻属昆虫的超微结构与乳晕外闭塞的关系。植物学报(英文版)189:29-50。doi: 10.3897 / phytokeys.189.78149]。

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.