English  |  正體中文  |  简体中文  |  Items with full text/Total items : 28607/40644
Visitors : 5281132      Online Users : 448
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/38347

Title: Ultrastructure of sperm of blue sprat, Spratelloides gracilis, Teleostei,Clupeiformes, Clupeidae
Authors: T.-H. Hsu;K.-H. Lin;J.-C. Gwo
Contributors: 國立臺灣海洋大學:水產養殖學系
Date: 2008
Issue Date: 2016-08-29T08:04:17Z
Publisher: Journal of Applied Ichthyology
Abstract: Abstract: Although semen cryopreservation has been applied successfully in many fish species, extensive variation in post-thaw semen quality exists between species and individuals. AFLP (amplified restriction fragment length polymorphism) is a powerful method for detecting DNA polymorphisms at the individual, population, and species levels. The method has been successfully applied to boars (Sus domestica, Suidae, Artiodactyla, Mammalia) to detect and evaluate differences in DNA sequences that correspond with semen integretiy after employing various freezing techniques. Freezing and thawing of semen has also an effect of selecting for freezing-resistant (or intact) and eliminating non-viable or defective sperm. Only the fully intact and functional sperm, despite potential compromise by adverse freezing and osmotic stresses, retain fertility after thawing. The objective of this study was to use AFLP to assess any genetic changes associated with the effect of employed cryo-methodology on the genetic integrity of sperm of the black sea bream (Acanthopagrus schlegeli) under different cryopreservation treatments. The cryopreservation protocols had no significant effect on sperm motility or survival rate of fertilized ova regardless of using fresh (% motile sperm 89.6 ± 3.0; % embryonic survival rate 54.4 ± 2.9) and frozen-thawed semen (% motile sperm 80.2 ± 2.0; % embryonic survival rate 51.8 ± 2.0). The post-thaw sperm motility and survival rates were not significantly different among the sperm samples of the five black sea bream males examined. In the present study, the remaining black sea bream sperm that survive the cryopreservation limit the power of AFLP to trace the genetic markers which correlate with the differences in the sensitivity of sperm to cryo-injury. It is also possible that point mutations outside the AFLP priming sites may not have been detected. More thorough investigations are needed to determine whether such DNA fingerprints would be found in fish species.
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/38347
Appears in Collections:[水產養殖學系] 期刊論文

Files in This Item:

File Description SizeFormat

All items in NTOUR are protected by copyright, with all rights reserved.


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback