| 李媛,赵元莙,索栋.2009.中华球孢虫显微与亚显微观察.动物学杂志,44(4):82-88. |
| 中华球孢虫显微与亚显微观察 |
| Microstructure and Ultrastructure of Sphaerospora chinensis |
| 投稿时间：2009-02-09 修订日期：2009-05-03 |
| DOI： |
| 中文关键词: 中华球孢虫 鳃寄生虫 显微结构 亚显微结构 |
| 英文关键词:Sphaerospora chinensis Gill-parasite Microscopic structure Ultrastructure |
| 基金项目:国家自然科学基金项目(No.30570221);重庆市自然科学基金重点项目(No.CSTC-2006BA1019) |
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| 中文摘要: |
| 运用光镜和透射电镜对中华球孢虫(Sphaerospora chinensis)的结构与发育特点进行观察。结果表明,中华球孢虫呈卵圆形,孢质均匀。极囊和极丝都有透明中间层包围,极丝有粘性且易释放;孢子母细胞边缘有壳瓣形成体,是壳瓣细胞的发育起点,成熟孢子的壳瓣外周有突起的条纹,但两个壳瓣的条纹不尽相同,两个壳瓣之间以紧密连接的方式相连;孢质母细胞的发生属单孢子发育模式;随着细胞的成熟,球孢虫所含的内质网、微管等结构会退化乃至消失。文章还讨论了中华球孢虫极丝易释放性与其对寄生方式适应性的关系。重庆为该虫新分布区。 |
| 英文摘要: |
| Sphaerospora chinensis has experienced a complicated and confused naming process,but we have corrected this misleading situation in paper.We observed its structure by both light microscopy and electron microscopy.The whole shape of S.chinensis was ovoid and its polar capsules were surrounded by a lucent central layer,and so did the polar filament.Valve cells were originated from valve-forming body,a special tiny structure at the edge of pansporoblast.The two valves were jointed by tight junction in mature individuals.The two valves of spore both had several lines of stripes on the outer surface,but they were different in shape and colour to some extent.S.chinensis showed gill-parasitized and monosporous pansporoblasts.With the development of S.chinensis,organelles such as endoplasmic reticulum and microtubules degenerated or even disappeared.The extrusion of polar filament from polar capsule was a common phenomenon which suggested that the tendency of extrusion was likely due to the way of parasitism,i.e.,the sticky polar filament contributed to making the spore adhere to the gill filament.Chongqing was found to be a new distribution place of this species. |
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