Re-examination of Cyclotella lacunarum Hustedt (Bacillariophyta) from lakes in the Pamir Mountains, western China, and description of two similar Lindavia taxa collected from Tajikistan and Nepal
Re-examination of Cyclotella lacunarum Hustedt (Bacillariophyta) from lakes in the Pamir Mountains, western China, and description of two similar Lindavia taxa collected from Tajikistan and Nepal
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中国西部帕米尔山区湖泊中的硅藻门（Cyclotella lacunarum Hustedt）的重新检测以及从塔吉克斯坦和尼泊尔收集的两个相似的林达维亚类群的描述
DOI：
10.1080/0269249x.2020.1745896
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发表时间：
2020-01
期刊：
影响因子：
1.8
通讯作者：
Yang Xiaoping
中科院分区：
文献类型：
--
作者：
Patrick Rioual;Yumei Peng;Zhangdong Jin;Andrea Lami;Aldo Marchetto;Steffen Mischke;Fei Zhang;Zhongyan Zhang;Yang Xiaoping
最初描述于19世纪末在帕米尔山脉采集的样品，环藻胡斯特是一个中心硅藻物种，没有很好的定义，很少在科学文献中报道。我们的调查显示，这个分类群的模式产地，现在被称为Lindavia lacunarum（胡斯特）Nakov et al.，实际上是在中国西部，而不是在塔吉克斯坦，因为以前错误地假设。光学显微镜（LM）和扫描电子显微镜（SEM）观察的模式标本和现代标本收集在模式产地允许我们修正本种的描述。其最显著的特征是具有中心的fultoportulae只有两个卫星孔，而不是通常报道的Lindavia相似种的三个。然后将林达维亚lacunarum与从塔吉克斯坦和尼泊尔的高海拔湖泊收集的两个相似的林达维亚种群进行比较。这两个种群最初被鉴定为小环藻/Lindavia lacunarum，代表了该分类群在其模式产地之外的唯一报道。塔吉克斯坦的人口与L.该变种为一新变种Lindavia lacunarum var.卡拉库尔变种尼泊尔种群与L.新种Lindavia nepalensis sp. nov.
Originally described from a sample collected in the Pamir Mountains at the end of the nineteenth century, Cyclotella lacunarum Hustedt is a centric diatom species that is not-well defined and seldom reported in the scientific literature. Our investigations revealed that the type locality of this taxon, now referred to as Lindavia lacunarum (Hustedt) Nakov et al., is actually in western China and not in Tajikistan, as wrongly assumed previously. Light microscope (LM) and scanning electron microscope (SEM) observations of the type material and of modern material collected at the type locality allowed us to emend the description of this species. Its most remarkable character is that it possesses central fultoportulae with only two satellite pores instead of three as generally reported for similar species of Lindavia. Lindavia lacunarum was then compared to two similar populations of Lindavia collected from high elevation lakes in Tajikistan and Nepal. These two populations were originally identified as Cyclotella/Lindavia lacunarum and represent the only reported occurrences of this taxon outside its type locality. The population from Tajikistan differs from L. lacunarum by having cells of smaller size, with an almost flat valve face and has been described as a new variety Lindavia lacunarum var. karakulensis var. nov. The Nepalese population is more clearly differentiated from L. lacunarum by having a different type of colliculate pattern in the central area and significantly lower density of central fultoportulae and is therefore described as a new species, Lindavia nepalensis sp. nov.
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影响因子：
2.2
作者：
J. Stastny
通讯作者：
J. Stastny
影响因子：
2.6
作者：
J. Sigwart;J. Sigwart;Keith D. Bennett;Keith D. Bennett;S. Edie;L. Mander;B. Okamura;K. Padian;Q. Wheeler;J. Winston;Norine W. Yeung
通讯作者：
J. Sigwart;J. Sigwart;Keith D. Bennett;Keith D. Bennett;S. Edie;L. Mander;B. Okamura;K. Padian;Q. Wheeler;J. Winston;Norine W. Yeung
影响因子：
2.9
作者：
E. Theriot
通讯作者：
E. Theriot
DOI：
10.2216/i0031-8884-27-2-300.1
发表时间：
1988-06
期刊：
--
影响因子：
--
作者：
G. Hasle
通讯作者：
G. Hasle
影响因子：
1.1
作者：
J. Kociolek;G. Khursevich
通讯作者：
J. Kociolek;G. Khursevich