Ultrastructure Developments During Spermiogenesis in Polydora ciliata(Annelida: Spionidae),a Parasite of Mollusca
文献类型：CNKI期刊论文
| 作者 | GAO Yan ; ZHANG Tao; ZHANG Libin; QIU Tianlong; XUE Dongxiu; YANG Hongsheng
|
| 发表日期 | 2014-12-06 |
| 出处 | Journal of Ocean University of China
 |
| 关键词 | Polydora ciliata spermiogenesis ultrastructure |
| 英文摘要 | Spionid worms of Polydora ciliata inhabit the shells of many commercially important bivalves and cause disease in molluscan aquaculture. Their sperm structure is closely related to their fertilization method. To give an insight into the sperm structure and spermatogenesis, ultrastructure details of the subcellular components of germ cells during spermiogenesis of Polydora ciliata are detected by transmission electron microscopy(TEM). In P. ciliata, during spermiogenesis, chromatin is regularly arranged as dense fibrils and becomes more condensed when the nucleus elongates. Microtubules do not surround the nucleus during its elongation. The Golgi phase is characterized by the formation of proacrosomal granules within the Golgi apparatus. The proacrosomal granules fuse to form a single, spherical acrosomal vesicle that migrates to the anterior pole of the cell. At the time of nuclear condensation, mitochondria become reduced in number but increased in size, causing deep indentation at the base of the nucleus. The mid-piece has a few mitochondria. The cap phase includes the spreading of the acrosomal granule over the surface of the nucleus of the differentiating spermatid. The acrosomal phase of spermiogenesis is typically associated with changes in the shape of the nucleus, acrosome and tail. The relationship of sperm ultrastructure to spermiogenesis in spionidae species was discussed. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | supported by the National Key Technology Support Program (2011BAD13B05) |
| 卷 | v.13期:06页:193-199 |
| 语种 | 英文; |
| 分类号 | S852.7 |
| ISSN号 | 1672-5182 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/190225]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.KeyLaboratoryofMarineEcologyandEnvironmentalSciences,InstituteofOceanology,ChineseAcademyofSciences 2.UniversityofChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | GAO Yan,ZHANG Tao,ZHANG Libin,et al. Ultrastructure Developments During Spermiogenesis in Polydora ciliata(Annelida: Spionidae),a Parasite of Mollusca. 2014. |
入库方式： OAI收割
来源：海洋研究所
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