摘要
本文用透射电镜观察了无蹼壁虎精子头部形成的过程。早期精细胞具有显著的高尔基复合体、线粒体集合及细胞质桥，接着高尔基体成熟面分泌出前顶体囊泡，并逐渐向核移动。以后精子形成可分四个时期：时期Ⅰ，当前顶体囊泡移至核膜时，核膜凹陷形成封闭的顶体囊泡，囊泡底部靠近核膜有一电子致密的顶体颗粒；时期Ⅱ，细胞核延长，顶体囊泡变扁平；时期Ⅲ，细胞核进一步延长，核内染色质纤维变粗并沿核纵轴方向排列有序；时期Ⅳ，精子发育成熟，核浓缩到最大限度，顶体发育完全，高尔基体退化为初级溶酶体。
Sperm head differentiation of Gekko swinhonis was observed by transmission electron microscope. There were Golgi complex, mitochondrial aggregate and cytoplasmic bridge in the early spermatids. The preacrosomal vesicle was secretted by the mature surface of Golgi complex and moved toward the nucleus. The course of spermiogenesis can be divided into four stages: Stage Ⅰ, the nucleus concaved when the preacrosomal vesicle reached the nucleus, increasingly, acrosomal vesicle acrosomal vesicle came into being and subacrosomal granules appeared at the bottom of acrosomal vesicle. Stage Ⅱ, the nucleus prolonged and acrosomal vesicle flattened. Stage Ⅲ, the nucleus went on prolonging and the chromatin fibers in it condensed and was put in a order of parallel to the longitudinal axis of the nucleus. Stage Ⅳ, the spermatid and acrosomal complex was well developed. The nucleus condensed into the largest extent, but the Golgi complex degenerated into primary lysosome.
出处
《动物学杂志》
CAS
CSCD
北大核心
1998年第1期25-28,共4页
Chinese Journal of Zoology
关键词
无蹼壁虎
精子头部
形成
Gekko swinhonis Sperm head Spermiogenesis
