Morphology of Amphora lunulata A.H. Wachnicka & E.E. Gaiser and its transfer to Seminavis D.G. Mann

IF 1.9 3区生物学 Q2 MARINE & FRESHWATER BIOLOGY

Diatom Research Pub Date : 2022-01-02 DOI:10.1080/0269249X.2022.2041490

Chenhong Li, Lanyu Tan, Yahui Gao, Xuesong Li, Lin Sun, Junrong Liang, Jun Zhang, Luqiang Huang, Changping Chen

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引用次数: 1

Abstract

An amphoroid diatom epiphytic on seagrass leaves from Hainan Province, southern China was identified as Amphora lunulata Wachnicka & Gaiser. It is characterized by a semi-elliptical valve with acute apices, ventral striae interrupted at the centre, and an axial area, which is well developed on the dorsal side but narrower at the centre, in accordance with its original description. However, as seen under the scanning electronic microscope, A. lunulata presents a combination of features that is consistent with the description of the genus Seminavis, i.e., slit-like areolae covered by hymenes, terminal fissures hooked toward the dorsal side and unornamented valvocopula. Therefore, we redefined the taxonomic status of Amphora lunulata A.H. Wachnicka & E.E. Gaiser and transferred it to the genus Seminavis. We compared the morphometric characteristics of Seminavis lunulata to those of the original description from Wachnicka & Gaiser (2007) and other taxa in Seminavis, including Seminavis atlantica M. Garcia, Seminavis eulensteinii (Grunow) D.B. Danielidis, K. Ford & D. Kennett, Seminavis heidenii D.G. Mann in D.B. Danielidis & D.G. Mann.

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双耳壶的形态及向双耳壶的转移

海南海草叶片上的一种两性硅藻附生植物被鉴定为lunulata Amphora Wachnicka & Gaiser。它的特征是半椭圆形瓣，尖尖尖锐，腹侧条纹在中心中断，轴向区，在背侧发育良好，但在中心较窄，与原来的描述一致。然而，在扫描电子显微镜下看到，a. lunulata呈现出与Seminavis属描述一致的特征组合，即由膜覆盖的裂缝状乳晕，末端裂缝向背侧弯曲，无装饰的瓣口。因此，我们重新定义了双耳壶(Amphora lunulata A.H. Wachnicka & E.E. Gaiser)的分类地位，并将其转移到Seminavis属。我们将lunulata的形态特征与Wachnicka & Gaiser(2007)和Seminavis的其他分类群的原始描述进行了比较，包括Seminavis atlantica M. Garcia, Seminavis eulensteinii (Grunow) D.B. Danielidis, K. Ford和D. Kennett，以及D.B. Danielidis和D.G. Mann中的Seminavis heidenii D.G. Mann。

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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.