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透射电镜下比较研究了海水浸泡前、后太平洋牡蛎卵子 (Crassostrea,gigas Thunberg)的超微结构。太平洋牡蛎卵子为均黄卵 ,由卵黄膜、质膜、卵质与卵核 4部分组成。卵质内除含有线粒体、内质网、高尔基体等细胞器之外 ,还含有多种来源的卵黄颗粒 ,但缺乏皮层颗粒。海水浸泡前 ,内质网含量少 ,线粒体丰富 ,集中分布在核膜附近 ,卵核 (生发泡 )未破裂 ;海水浸泡后 ,胞质含有十分丰富的粗面内质网 ,线粒体分散分布 ,生发泡破裂 ,卵子处于第一次成熟分裂中期 ,核仁存在 ,核仁组织中心与粗面内质网紧密相连。
The ultrastructure of oyster (Crassostrea gigas Thunberg) before and after seawater immersion was studied by transmission electron microscopy. Pacific oyster eggs are yellow eggs, from the yolk membrane, plasma membrane, egg and egg 4 parts. In addition to the egg contains mitochondria, endoplasmic reticulum, Golgi and other organelles, but also contains a variety of sources of yolk particles, but the lack of cortical particles. Before soaking in seawater, the content of endoplasmic reticulum was low and the mitochondria were abundant, which were concentrated in the vicinity of the nuclear membrane, and the egg nucleus (raw foam) did not rupture. After soaking in seawater, the cytoplasm contained very rich rough endoplasmic reticulum, mitochondria dispersed and germinated Bubble rupture, the egg is in the first mature metaphase, nucleolus exist, nucleolar tissue centers and rough endoplasmic reticulum closely linked.