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New and interesting diatoms from the Shimen Wetwalls, Yunnan Province, China. II. The diatom genus Nupela Vyverman & Compère (Bacillariophyceae)

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Abstract

We detailed the valve morphology of five new species of diatom genus Nupela from wetwall communities in Yunnan Province, China, with light and scanning electron microscope. The five new species demonstrate great variability within the genus, as three of them are biraphid and two are monoraphid. In addition, variation was noted in the structure of internal proximal raphe ends, with some species having anchor-shaped ends and other species have hooked ends. The genus Nupela has grown considerably in 30 years since it was first proposed, going from a monotypic genus to over 85 taxa. Diagnosis of the genus is based on the presence of an external covering over the areolae. We discussed the systematic placement of Nupela within the naviculoid diatoms. Yunnan Province appears to harbor many endemic diatom taxa, and many regions of the province have yet to be studied.

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Data Availability Statement

All data included in this study are available upon request by contact with the corresponding author.

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Acknowledgment

We are grateful to Shanxi Academy of Advanced Research and Innovation in acquiring SEM images.

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Authors and Affiliations

  1. School of Life Science, Shanxi University, Taiyuan, 030006, China

    Qi Liu, Xi Luo & Shulian Xie

  2. Museum of Natural History, University of Colorado, Boulder, CO, 80309, USA

    John Patrick Kociolek

  3. Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, 80309, USA

    John Patrick Kociolek

Authors
  1. Qi Liu
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  2. Xi Luo
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  3. Shulian Xie
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Correspondence to Shulian Xie.

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Supported by the National Nature Science Foundation (No. 31970217), the One-Hundred Talents Program of Shanxi Province, and the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi (No.2019L0070)

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Liu, Q., Luo, X., Xie, S. et al. New and interesting diatoms from the Shimen Wetwalls, Yunnan Province, China. II. The diatom genus Nupela Vyverman & Compère (Bacillariophyceae). J. Ocean. Limnol. 41, 327–341 (2023). https://doi.org/10.1007/s00343-021-1281-9

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