Chmilevskiĭ D A, Kameneva T O
Biological Research Institute, St. Petersburg State University, and Institute of Cytology RAS, St. Petersburg.
Tsitologiia. 2003;45(1):5-13.
Yolk globules in developing oocytes of Tilapia mosambique are formed by two processes: 1) biosynthetical activity of oocyte organoides; 2) vitellogenin migration by micropinocytosis and its further transformation. Undoubtedly, yolk globules of endogenic and exogenic origin are fused. The primary yolk globules are spherical, and the secondary ones are lobular. The latter originate by incorporating the former. The fast growth of the late vitellogenic stage oocytes occurs as a result of active migration of primary yolk globules into the central part of the oocyte and as their association with the secondary yolk globules. In vitellogenic oocytes of T. mosambique no yolk vesicles (cortical granules), were found by any existing methods.
1）卵母细胞细胞器的生物合成活性；2）通过微胞饮作用的卵黄蛋白原迁移及其进一步转化。毫无疑问，内源性和外源性来源的卵黄球会融合。初级卵黄球呈球形，次级卵黄球呈小叶状。后者通过并入前者而产生。卵黄发生后期卵母细胞的快速生长是初级卵黄球向卵母细胞中央部分的主动迁移以及它们与次级卵黄球结合的结果。通过任何现有方法，在莫桑比克罗非鱼的卵黄发生期卵母细胞中均未发现卵黄小泡（皮质颗粒）。
