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A Study on the Reproductive Cells in Testes of Microphysogobio yaluensis  

Kim, Jae-Goo (Department of Life Science, Cheongju University)
Kim, Dong-Heui (Deptartment of Environmental Medical Biology, Wonju College of Medicine, Yonsei University)
Reu, Dong-Suck (Department of Life Science, Cheongju University)
Publication Information
Applied Microscopy / v.39, no.3, 2009 , pp. 245-252 More about this Journal
Abstract
The reproductive cells in testes of Microphysogobio yaluensis were investigated using light and electron microscopes. The testis of Microphysogobio yaluensis consisted of numerous testicular cysts contained synchronized cells. Sperms were full in testicular sacs of mature testes. Leydig cells were located among testicular cysts. The nucleus of primary spermatocytes was round and mitochondria were congregated in cytoplasm. The size of secondary spermatocyte was smaller than that of primary spermatocyte and the nucleus of a secondary spermatocyte was round or oval. In spermatids, the nucleus was round and electron-dense. In spermiogenesis, the nucleus was condensed and a flagellum started to be formed. The mitochondria were rearranged along the flagellum. The sperm had a round head, the acrosome was not found and a motile flagellum consisted of an axoneme with a typical 9+2 pattern of microtubule.
Keywords
Microphysogobio yaluensis; Testis; Primary spermatocyte; Secondary spermatocyte; Spermatid; Flagellum;
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