We studied the spatial conformation and activity of mitochondria in the developing syncytial male germline cysts during spermatogenesis of the medicinal leeches using light, fluorescent, transmission electron microscopy, and serial block-face scanning electron microscopy. In cysts with spermatogonia and spermatocytes, mitochondria form networks and are in a dynamic hyperfusion state, while in cysts with spermatids, a single huge mitochondrion is observed. As spermiogenesis progresses, this huge mitochondrion is finally located in the future midpiece. The highest activity, in terms of membrane potential, of the mitochondria in H. medicinalis germline cysts was observed in cysts with spermatocytes; the lowest was in cysts with late elongated spermatids.

我们使用光、荧光、透射电子显微镜和系列块面扫描电子显微镜研究了药用水蛭精子发生过程中发育中的合胞体雄性种系囊肿中线粒体的空间构象和活性。在精原细胞和精母细胞的囊肿中，线粒体形成网络并处于动态的过度融合状态，而在精细胞的囊肿中，观察到单个巨大的线粒体。随着精子发生的进展，这个巨大的线粒体最终位于未来的中段。就膜电位而言，在含有精母细胞的包囊中观察到药用药用菌种系包囊中线粒体的最高活性；最低的是精子细胞晚期伸长的囊肿。