Navithidium gen. nov., a new monoraphid diatom (Bacillariophyceae) genus based on Achnanthes delicatissima Simonsen

被引：5

作者：

Al-Handal, Adil Y. ^{[1
]}

Romero, Oscar E. ^{[2
,3
]}

Eggers, Sara Lena ^{[3
]}

Wulff, Angela ^{[1
]}

机构：

[1] Univ Gothenburg, Dept Biol & Environm Sci, Gothenburg, Sweden

[2] Univ Bremen, Ctr Marine Environm Sci, MARUM, Bremen, Germany

[3] Alfred Wegener Inst, Helmholtz Ctr Polar & Marine Res, Bremerhaven, Germany

来源：

DIATOM RESEARCH | 2021年 / 36卷 / 02期

基金：

瑞典研究理事会;

关键词：

achnanthoid species; Achnanthes; Baltic Sea; monoraphid; Navithidium; new genus; Sweden; ECOLOGY;

D O I：

10.1080/0269249X.2021.1921039

中图分类号：

Q17 [水生生物学];

学科分类号：

071004 ;

摘要：

We investigated the ultrastructure of Achnanthes delicatissima Simonsen in materials collected from the Swedish Baltic coast. Valve structure differs markedly from that of Achnanthes sensu lato, particularly in the absence of cribrate areolae which separates Achnanthes from all other members of the family Achnanthaceae. Comparing this species with those recently described achnanthoid genera, such as Scalariella Riaux-Gobin & Witkowski and Madinithidium Witkowski, Desrosiers & Riaux-Gobin revealed morphological differences that warrant the erection of a new genus, Navithidium. Owing to the small size of the frustules, it is difficult to identify Navithidium delicatissima in light microscopy due to similarities with some closely related taxa like Achnanthidium pseudochamaepinnularia (which is here transferred to Navithidium). A comparison with related genera is provided and discussed.

引用

页码：133 / 141

页数：9

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