Morphological observation of Epithemia ocellata (Ehr.) Kütz. (Bacillariophyceae) from China

Yawen Fan; Zhengyu Hu

doi:10.1007/s00343-007-0398-9

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Morphological observation of Epithemia ocellata (Ehr.) Kütz. (Bacillariophyceae) from China

Updated：2023-05-16

- Morphological observation of Epithemia ocellata (Ehr.) Kütz. (Bacillariophyceae) from China
- Journal of Oceanology and Limnology Vol. 25, Issue 4, Pages: 398-402(2007)
- Affiliations：
  
  1. Department of Biology Harbin Normal University
  2. Institute of Hydrobiology the Chinese Academy of Sciences
- Author bio：
- Funds：
- DOI：10.1007/s00343-007-0398-9
  CLC：
- Published：2007
- Accepted：
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Fan, Y., Hu, Z. Morphological observation of Epithemia ocellata (Ehr.) Kütz. (Bacillariophyceae) from China., Chin. J. Ocean. Limnol. 25, 398–402 (2007). https://doi.org/10.1007/s00343-007-0398-9
DOI：

Fan, Y., Hu, Z. Morphological observation of Epithemia ocellata (Ehr.) Kütz. (Bacillariophyceae) from China., Chin. J. Ocean. Limnol. 25, 398–402 (2007). https://doi.org/10.1007/s00343-007-0398-9 DOI：

摘要

Abstract

The species of Epithemia ocellata (Ehr.) Kütz. from Northeastern China were observed by scanning electron microscopy (SEM). The studies on silica valve formation in different stages were made. At the early stage

a Y-shaped raphe sternum was found. Areolae were made from virgae and vimines. In immature valves

the canal formation before the raphe fissure is visible. The raphe system

virgae and vimines (areolae) might be the early siliceous elements of the valve during morphogenesis. The formations of virgae and vimines are similar to that of Gephyria media W. Arnott. Rows of silica papillae formed gradually on the face of the valve. After the areolae were covered with silica and form rows of papillae

the outer valve surface could become mature. Details of the internal costae were observed in mature valves.

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references

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