三种淡水布纹藻(硅藻纲)的超微结构研究
DOI:
作者:
作者单位:

吉首大学生物资源与环境科学学院

作者简介:

通讯作者:

中图分类号:

基金项目:


Ultrastructure of three freshwater species of Gyrosigma (Bacillariophyceae)
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    本文利用光学和扫描电子显微镜对三种淡水布纹藻属的种类进行了研究。三种布纹藻(钝布纹藻、库氏布纹藻和赛欧托布纹藻) 皆属于粗糙布纹组;从壳面观看,都具有S形和?形两种壳瓣外形。钝布纹藻具有弱的S形壳面外形、T形的外近端壳缝末稍和直的内近端壳缝末稍以及椭圆形的中央区。库氏布纹藻具有明显的S形壳面外形、略微向不同侧偏转的外近端壳缝末稍和直的内近端壳缝末稍以及椭圆形的中央区。赛欧托布纹藻具有弱的S形壳面外形、强烈钩状的外近端壳缝末稍和T形的内近端壳缝末稍以及倾斜的中央区。钝布纹藻在广东、广西、湖南、四川和云南等地分布;库氏布纹藻在新疆和湖南等地有发现;赛欧托布纹藻分布于武陵山区,本文是它在中国淡水分布的首次报道。

    Abstract:

    A study is carried out on three freshwater species of Gyrosigma using light and scanning electric microscopy. These three species (Gyrosigma obtusatum, G. kuetzingii and G. sciotoense) all belong to the section Strigiles and all present two types of valve outline in valve view: S-shaped and ?-shaped. Gyrosigma obtusatum has weakly sigmoid valve outline, T-shaped external proximal raphe fissures, straight internal proximal raphe ending, and elliptic central area. Gyrosigma kuetzingii bears distinctly sigmoid valve outline, external proximal raphe fissures which slightly deflect towards different sides, straight internal proximal raphe ending, and elliptic central area. Gyrosigma sciotoense possesses also weakly sigmoid valve outline, strongly hooked external proximal raphe fissures, T-shaped internal proximal raphe fissures, and oblique central area. Gyrosigma obtusatum is found in Gongdong, Gongxi, Hunan, Sichuang and Yunnan; G. kuetzingii is found in both XinJiang and Hunan; and G. sciotoense is only found in Wuling Mountains, and this is its first report from the freshwater in China.

    参考文献
    相似文献
    引证文献
引用本文
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2019-05-29
  • 最后修改日期:2019-07-27
  • 录用日期:2019-07-19
  • 在线发布日期:
  • 出版日期:

微信公众号二维码

手机版网站二维码