Ultrastructure of Pagrus major and Rhabdosargus sarba spermatozoa (Perciformes : Sparidae : Sparinae)

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题名:	Ultrastructure of Pagrus major and Rhabdosargus sarba spermatozoa (Perciformes : Sparidae : Sparinae)
作者:	Gwo JC Kuo MC Chiu JY Cheng HY
贡献者:	生科系
关键词:	sperm morphology sparidae marine fish reproduction
日期:	2004
上传时间:	2009-11-27 11:18:36 (UTC+8)
摘要:	Transmission and scanning electron microscopy were used to investigate the ultrastructure of spermatozoa in two Sparinae species Pagrus major and Rhabdosargus sarba. Ultrastructurally, the spermatozoa of P. major and R. sarba both consist of a spherical, homogeneously electron-dense nucleus with a deep axial nuclear fossa, and an unusual notch, in the nuclear region. The midpiece contains two spherical mitochondria in R. sarba and one in P. major. The comparison of spermatozoal ultrastructure of these two species of Sparidae shows that they closely resemble one another and suggests that they are closely related. Variation in the geometry and dimensions of the mitochondrion and nucleus is substantial in these two Sparidae species. It is concluded that the spermatozoa of both species are of primitive type, and they are distinguished by several unique features which may provide useful systematic characteristics. (C) 2003 Elsevier Ltd. All rights reserved.
關聯:	TISSUE & CELL Volume: 36 Issue: 2 Pages: 141-147
显示于类别:	[生命科學系] 期刊論文

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