LIGHT AND ELECTRON-MICROSCOPE STUDY ON OOGENESIS IN FRESHWATER PULMONATE SNAIL BIOMPHALARIA-GLABRATA
LIGHT AND ELECTRON-MICROSCOPE STUDY ON OOGENESIS IN FRESHWATER PULMONATE SNAIL BIOMPHALARIA-GLABRATA
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DOI：
10.1007/bf00219406
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发表时间：
1976-01-01
影响因子：
3.6
通讯作者：
BOER, HH
中科院分区：
文献类型：
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作者：
DEJONGBRINK, M;DEWIT, A;BOER, HH
通过组织化学和电子显微镜技术研究了淡水蜗牛光滑双脐螺卵黄颗粒的形成和组成以及卵泡细胞的作用。粗面内质网和高尔基体似乎参与了卵黄的形成，这是整个卵子发生过程中的一个连续过程。从蛋黄形成一开始，蛋黄颗粒的形态就分为两种主要类型。然而，通过组织化学和酶细胞化学方法，没有观察到这些类型之间存在差异。产卵后颗粒获得溶酶体酶，这表明它们的主要功能可能是消化卵周液，卵周液含有发育中胚胎所需的营养物质。通过定量电子显微镜研究了卵子发生的连续阶段中的卵黄形成和卵泡细胞的活性。数据强烈表明，卵泡细胞参与卵泡腔的形成，从而参与排卵过程。
In the freshwater snailBiomphalaria glabratathe formation and composition of yolk granules and the role of the follicle cells were studied by histochemical and electron microscopical techniques. The rough endoplasmic reticulum and the Golgi apparatus appeared to be involved in yolk formation, which is a continuous process throughout oogenesis. From the very beginning of yolk formation two main types of yolk granules were distinguished morphologically. However, with histochemical and enzyme cytochemical methods no differences were observed between these types. The granules acquire lysosomal enzymes after oviposition, indicating that their main function is probably digestion of perivitelline fluid, which contains nutrients for the developing embryo.Yolk formation and the activity of the follicle cells were studied in successive stages of oogenesis by quantitative electron microscopy. The data strongly suggest that the follicle cells are involved in the formation of the follicular cavity and hence in the ovulation process.