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Morphology and ultrastructure of Brachymystax lenok tsinlingensis spermatozoa by scanning and transmission electron microscopy

文献类型： 外文期刊

作者： Guo, Wei 1 ; Shao, Jian 3 ; Li, Ping 3 ; Wu, Jinming 3 ; Wei, Qiwei 1 ;

作者机构： 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China

2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China

3.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Key Lab Freshwater Biodivers Conservat, Minist Agr China, 8 1st Wudayuan Rd,Donghu Hitech Dev Zone, Wuhan 430223, Peoples R China

4.Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China

5.Univ South Bohemia Ceske Budejovice, Fac Fisheries & Protect Waters, South Bohemian Res Ctr Aquaculture & Biodivers Hy, Res Inst Fish Culture & Hydrobiol, Zatisi 728-II, Vodnany 38925, Czech Republic

6.Chinese Acad Fisheries Sci, Freshwater Fisheries Res Ctr, Wuxi 214081, Peoples R China

关键词： Morphology; Ultrastructure; Brachymystax lenok tsinlingensis; Spermatozoa; Scanning electron microscopy; Transmission electron microscopy

期刊名称：TISSUE & CELL （ 影响因子：2.466； 五年影响因子：2.235 ）

ISSN： 0040-8166

年卷期： 2016 年 48 卷 4 期

页码：

收录情况： SCI

摘要： This study was conducted to investigate Brachymystax lenok tsinlingensis spermatozoa cell morphology and ultrastructure through scanning and transmission electron microscopy. Findings revealed that the spermatozoa can be differentiated into three major parts: a spherical head without an acrosome, a short mid-piece, and a long, cylindrical flagellum. The mean length of the spermatozoa was 36.11 +/- 2.84 mu m, with a spherical head length of 2.78 +/- 0.31 mu m. The mean anterior and posterior head widths were 2.20 +/- 0.42 mu m and 2.55 +/- 0.53 mu m, respectively. The nuclear fossa was positioned at the base of the nucleus that contained the anterior portion of flagellum and a centriolar complex (proximal and distal centrioles). The short mid-piece was located laterally to the nucleus and possessed just one spherical mitochondrion with a mean diameter of 0.65 +/- 0.14 mu m. The spermatozoa flagellum was long and cylindrical, and could be separated into two parts: a long main-piece and a short end-piece. The main piece of the flagellum had short irregular side-fins. The axoneme composed the typical '9 + 2' microtubular doublet structure and was enclosed by the cell membran e. This study confirmed that B. lenok tsinlingensis spermatozoa can be categorized as teleostean "Type I" spermatozoa; 'primitive' or 'ect-aquasperm type' spermatozoa. To the best of the authers knowledge, this was the first study conducted on the morphology and ultrastructure of B. lenok tsinlingensis spermatozoa. (C) 2016 Elsevier Ltd. All rights reserved.

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