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The Spermatogenesis of Cichlasoma managuensis, Cichlidae, Teleost  

Lee, Kyu-Jae (Department of Environmental Medical Biology, Wonju College of Medicine, Yonsei University)
Chang, Byung-Soo (Department of Cosmetology, Hanseo University)
Teng, Yung-Chien (Department of Environmental Medical Biology, Wonju College of Medicine, Yonsei University)
Kim, Seok (Department of Environmental Medical Biology, Central Research Laboratory, Wonju College of Medicine, Yonsei University)
Song, Mi-Sook (Department of Central Research Laboratory, Wonju College of Medicine, Yonsei University)
Joo, Kyung-Bok (Department of Ophthalmic Optics, Chodang University)
Kim, Dong-Heui (Department of Environmental Medical Biology, Wonju College of Medicine, Yonsei University)
Publication Information
Applied Microscopy / v.39, no.3, 2009 , pp. 219-226 More about this Journal
Abstract
The ultrastructure of spermatogenesis and sperm in Cichlasoma managuensis belonging to Cichlidae was investigated by light and electron microscopes. The testis of C. managuensis contained numerous testicular cysts, and spermatogenesis was synchronized in these testicular cysts. In the case of spermatogonia, the nucleus was comparatively large ellipsoidal, and mitochondria showed a marked development. The size of primary spermatocyte was smaller than that of spermatogonia, and that of secondary spermatocyte was smaller than that of primary spermatocyte. The chromatin of spermatocyte was highly condensed according to their development. The nucleus with electron-dense was round shape. In spermiogenesis, flagella started to be formed and chromatin was more condensed. The mitochondria were rearranged in a middle piece. The sperm was formed by loss of cytoplasm. The head of mature sperm was a spherical shape and had not acrosome. The microtubules of flagella were arranged 9+2 structure. Also, the tail of sperm have lateral fins.
Keywords
Cichlasoma managuensis; Fish; Spermatogenesis; Ultrastructure;
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Times Cited By KSCI : 3  (Citation Analysis)
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