洞庭湖淡水硅藻一新种——三角硅藻目

IF 1.4 4区 生物学 Q3 MARINE & FRESHWATER BIOLOGY Cryptogamie Algologie Pub Date : 2018-05-23 DOI:10.7872/crya/v39.iss2.2018.239
Bing Liu, David M. Williams, L. Ector
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引用次数: 15

摘要

昆虫硅藻属(Entomoneis)是一种形态独特的硅藻属植物,其环形呈泛伞状,常绕其顶轴扭曲,并具有一些独特的特征,如在凸起的双叶状龙骨上的s形纹,不同形状的连接线,大量的环带和各种穿孔条纹。大多数属于这一属的物种被发现是咸淡水或海洋,有一些出现在淡水栖息地,但没有一个物种被描述为完全是淡水的。本文利用光镜和扫描电镜对淡水硅藻新种tricundulata sp. nov.进行了详细的形态学观察。三波莲的特点是其瓣缘呈三波状;龙骨与阀体之间的过渡形状,其近端为u形端,中间部分略弯曲,远端为v形端;还有五个小隔间通往漏斗腔。除了三波莲特有的形态特征外,还报道并讨论了其与其他昆虫属的相似之处。
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Entomoneis triundulata sp. nov. (Bacillariophyta), a New Freshwater Diatom Species from Dongting Lake, China
Abstract The diatom genus Entomoneis includes species with a unique morphology, having panduriform frustules in girdle view, often twisted about its apical axis, with some unique characters such as a sigmoid raphe on elevated bilobate keel, differently shaped junction lines, numerous girdle bands and variously perforated striae. Most of the species belonging to this genus are found to be brackish or marine, with some occurrences in freshwater habitats, but not one species has been described as exclusively freshwater. In this study, the new freshwater diatom species Entomoneis triundulata sp. nov. is described based on a detailed morphological observation using light and scanning electron microscopy. The specific features of E. triundulata are its triundulate valve margin; the shape of the transition between keel and valve body having a proximal U-shaped end, a slightly curved middle segment and a distal V-shaped end; and five sub-compartments to the frustule cavity. Besides morphological features unique to E. triundulata, similarities with other Entomoneis species are reported and discussed.
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来源期刊
Cryptogamie Algologie
Cryptogamie Algologie 生物-海洋与淡水生物学
CiteScore
2.60
自引率
7.70%
发文量
11
审稿时长
>12 weeks
期刊介绍: Cryptogamie is a fast-track and peer-reviewed journal of international scope publishing in English only. It accepts original papers and review articles on the taxonomy, biology and ecology of all cryptogams. An issue of Cryptogamie may be devoted to a single topic, under the responsibility of guest editor(s). All articles published in Cryptogamie are compliant with the different nomenclatural codes. A copyright assignment will be signed by the authors before publication. Cryptogamie, Algologie accepts articles on systematics as well as ecology and evolution of any kind of algae (including Cyanobacteria).
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