In this work, we propose and describe a novel diatom species, Fistulifera alcalina sp. nov., isolated from Port Mayaca on Lake Okeechobee, Florida (USA). This new diatom species represents a distinct lineage within the genus Fistulifera, which includes F. iranensis (Hustedt) Lange-Bertalot, F. saprophila (Lange-Bertalot & Bonik) Lange-Bertalot, F. pelliculosa (Kützing) Lange-Bertalot, and F. solaris S. Mayama, M. Matsumoto, K. Nemoto & T. Tanaka. Morphometric and molecular phylogenetic analyses of the 18S rRNA and rbcL genes strongly support Fistulifera alcalina as a new species. Fistulifera alcalina sp. nov. is cultured in media with moderate salinity and high bicarbonate concentrations in contrast to the other species of Fistulifera which show ecological preferences for high salinity and eutrophic or oligotrophic waters. This is also the first record of Fistulifera in the southeastern United States (Florida, USA).

中文翻译：

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Fistulifera alcalina sp. 十一月 （舟形目，Stauroneidaceae）来自佛罗里达州奥基乔比湖的一种新的嗜碱硅藻物种（美国）

在这项工作中，我们提出并描述了一种新的硅藻物种，Fistulifera alcalina sp。11 月，从美国佛罗里达州奥基乔比湖的玛雅卡港分离出来。这种新的硅藻物种代表了 Fistulifera 属的一个独特谱系，其中包括 F. iranensis (Hustedt) Lange-Bertalot、F. saprophila (Lange-Bertalot & Bonik) Lange-Bertalot、F. pelliculosa (Kützing) Lange-Bertalot 和F. solaris S. Mayama、M. Matsumoto、K. Nemoto 和 T. Tanaka。18S rRNA 和 rbcL 基因的形态计量学和分子系统发育分析强烈支持 Fistulifera alcalina 作为一个新物种。Fistulifera alcalina sp. 十一月 与 Fistulifera 的其他物种相比，在中等盐度和高碳酸氢盐浓度的培养基中培养，后者显示出对高盐度和富营养或贫营养水域的生态偏好。