Schulz R, Blüm V
Cell Tissue Res. 1983;232(3):685-9. doi: 10.1007/BF00216439.
A process of elimination of the nucleus in oocytes of the rainbow trout displaying eight different stages is described. The phenomenon was observed only in stage III of sexual maturity. Initially, there is a slight shrinkage of the oocyte accompanied by the loss of yolk granules. This is followed by a cytoplasmatic protrusion into the ovarian lumen, which is covered by the follicular wall. Subsequently, the latter is ruptured and the nucleus migrates toward the opening. Finally, the nucleus leaves the follicle together with a portion of cytoplasm and the occasionally undergoes a breakdown into fragments in the ovarian lumen. The relevance of this mechanism in the process of preovulatory follicular atresia is discussed.
描述了虹鳟鱼卵母细胞中细胞核消除的过程，该过程呈现八个不同阶段。此现象仅在性成熟的III期观察到。最初，卵母细胞略有收缩，同时卵黄颗粒丢失。随后，细胞质向卵巢腔突出，突出部分被卵泡壁覆盖。随后，卵泡壁破裂，细胞核向开口处迁移。最后，细胞核与一部分细胞质一起离开卵泡，偶尔在卵巢腔内破碎成碎片。讨论了该机制在排卵前卵泡闭锁过程中的相关性。
