Cytochemical Localization of Nuclear Actin of Sperm and Spermatids in Urechis unicinctus
2005
Shin, K.S. (Soonchunhyang University, Asan, Republic of Korea) | Kim, H.J. (Soonchunhyang University, Asan, Republic of Korea) | Kwon, H.J. (Soonchunhyang University, Asan, Republic of Korea) | Kim, W.J. (Soonchunhyang University, Asan, Republic of Korea), E-mail: [email protected]
In this study, we found that sperm ball of Urechis unicinctus consisted of a somatic cell and spermatogenic cells. After separation from the sperm ball, individual spermatid floated freely in the coelomic fluid and differentiated into a mature sperm. Because of many nuclear vacuoles, spermatid nucleus was observed to be heterogeneous. Later, the spermatid nucleus condensed into the homogeneous round nucleus of the mature sperm. Perinuclear microtubules could be seen but did not seem to be organized into manchette microtubules.
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