温茹淑,曾德莉,方展强.2012.剑尾鱼卵子发生的组织学观察.动物学杂志,47(6):85-91. |
剑尾鱼卵子发生的组织学观察 |
Histological Studies on the Oogenesis of Xiphophorus helleri |
投稿时间:2012-07-12 修订日期:2012-08-29 |
DOI: |
中文关键词: 剑尾鱼 卵子发生 组织结构 |
英文关键词:Xiphophorus helleri Oogenesis Histology structure |
基金项目:2008年梅州市科学技术局、嘉应学院联合自然科学研究项目(No.08KJ23) |
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中文摘要: |
应用光学显微镜对卵胎生硬骨鱼类剑尾鱼(Xiphophorus helleri)卵巢的组织结构进行了观察。结果显示,剑尾鱼卵子的发育过程可划分为6个时相。Ⅰ时相的卵母细胞呈原始分化状态,细胞外具一层细胞质膜。Ⅱ时相卵母细胞外不仅具有质膜,而且还包绕一层滤泡细胞。Ⅲ时相和Ⅳ时相的卵母细胞分化明显,胞质内开始积累脂滴和卵黄颗粒。Ⅴ时相为成熟卵子,卵子的卵膜极薄,胞质内含有丰富的脂滴和卵黄。Ⅵ时相卵母细胞进入退化期,滤泡细胞从卵周向中央突入,卵黄被完全吸收,滤泡细胞自身也变得肥大。结果表明,剑尾鱼卵巢中卵母细胞的发育是不同步的。 |
英文摘要: |
The ovary structure of ovoviviparous teleost, Swordtail Fish (Xiphophorus helleri), was observed using optical microscopy. Swordtail Fish egg development process was divided into six phases. Phase Ⅰ oocyte was in a primitive differentiation state, with clear plasma membrane. Phase Ⅱ oocyte was surrounded by a layer of follicular cells. Phase Ⅲ and Ⅳ oocytes differentiated significantly, with accumulated lipid droplets and yolk granules in the cytoplasm. Phase Ⅴ oocyte was a mature egg, with very thin egg membrane and rich lipid droplets and yolk in the cytoplasm. Phase Ⅵ oocyte entered the degradation stage, with protrusion of the follicular cells into the central oocyte, and yolk absorption. Follicular cells became hypertrophy. The results show that the oocyte development is not synchronous in the ovary of Swordtail Fish. |
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