English  |  正體中文  |  简体中文  |  Items with full text/Total items : 27228/39071
Visitors : 2413633      Online Users : 69
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search
LoginUploadHelpAboutAdminister

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/26842

Title: White shrimp Litopenaeus vannamei that received the hot-water extract of Gracilaria tenuistipitata showed earlier recovery in immunity after a Vibrio alginolyticus injection
Authors: Su-Tuen Yeh;Jiann-Chu Chen
Contributors: NTOU:Department of Aquaculture
國立臺灣海洋大學:水產養殖學系
Keywords: Litopenaeus vannamei;Vibrio alginolyticus;Immersion;Hot-water extract of Gracilaria tenuistipitata;Haemocyte count;Phenoloxidase activity;Respiratory burst;SOD activity
Date: 2009-05
Issue Date: 2011-10-21T02:19:02Z
Publisher: Fish & Shellfish Immunology
Abstract: Abstract:White shrimp Litopenaeus vannamei which had been immersed in seawater containing the hot-water extract of Gracilaria tenuistipitata at 0 (control), 200, 400, and 600 mg L−1 for 3 h, were challenged with Vibrio alginolyticus at 4.6 × 106 colony-forming units (CFU) shrimp−1 and then placed in normal seawater (34‰). The survival rates of shrimp immersed in 200, 400, and 600 mg L−1 of the hot-water extract were significantly higher than those of control shrimp over 48–120 h. In another experiment, L. vannamei which had been immersed in the hot-water extract at 0, 200, 400, and 600 mg L−1 for 3 h, were challenged with V. alginolyticus at 4.0 × 106 CFU shrimp−1, and the immune parameters examined included the haemocyte count, phenoloxidase (PO) activity, respiratory burst (RB), and superoxide dismutase (SOD) activity at 12–120 h post-challenge after shrimp had been released into normal seawater. Shrimp not exposed to the hot-water extract or V. alginolyticus served as the background control. Results indicated that the haemocyte count, PO activity, RB, and SOD activity of shrimp immersed in 600 mg L−1 were significantly higher than those of control shrimp at 12–72 h post-challenge. Results also indicated that total haemocyte count (THC), PO activity, RB and SOD activity of shrimp immersed in 400 and 600 mg L−1 of the hot-water extract returned to the background values at 96, 48, 48, and 72 h, whereas these parameters of control shrimp returned to the original values at >120, >120, 96, and 96 h post-challenge, respectively. It was therefore concluded that L. vannamei that had been immersed in seawater containing the hot-water extract of G. tenuistipitata exhibited protection against V. alginolyticus as evidenced by the earlier recovery of immune parameters.
Relation: 26(5), pp.724-730
URI: http://ntour.ntou.edu.tw/handle/987654321/26842
Appears in Collections:[水產養殖學系] 期刊論文

Files in This Item:

File Description SizeFormat
index.html0KbHTML291View/Open


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