›› 1998, Vol. 16 ›› Issue (3): 209-213.

• 论著 • Previous Articles     Next Articles

ULTRASTRUCTURAL OBSERVATION ON SPERMATOCYTOGENESIS IN TAENIID CESTODES

Tian Xifeng; Yuan Lijie; Li Yihong; Huo Xiaoqing; Han Xiuling; Xu Min; Lu Minjie; Dai Jianjun; Dong Lu   

  1. 1 Department of Parasitology, North China Coal Medical College, Tangshan, 0630002 Department of Parasitology, Harbin Medical University, Harbin 1500863 Laboratory of Electron Microscope, 4 Affiliated Hospital, 5 Department of Computer, North China Coal Medical College, Tangshan, 063000
  • Received:1900-01-01 Revised:1900-01-01 Online:1998-06-30 Published:1998-06-30

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Abstract:

AIM: To study the spermatocytogenesis of taeniid cestodes at the ultrastructural leaves. METHODS: Transmission electron microscopy. RESULTS: The ultrastructural observation on spermatocytogenesis in Taenia solium, T. saginata and T. pisiformis were made by TEM. Two types of spermatogonia; type A and B, as well as the supporting cells surrounding the peripheral of spermatogonia are recognized. The type A spermatogonia are stem cells and the type B are mother cells which produce 16 primary spermatocytes by mitosis for 4 times with the cells unseparated. The primary spermatocytes are characterized by the ribosome masses in the cytoplasm. 32 secondary spermatocytes arranged in roselike were produced by reductive division of primary spermatocytes. The secondary spermatocytes become the spermatid quickly by short time development. CONCLUSION: The dividing mode of spermatogonia in Taeniid cestodes is mitosis with cells unseparated.

Key words: Taenia solium, Taenia saginata, Taenia pisiformis, spermatogenesis, ultrastructure