English  |  正體中文  |  简体中文  |  Items with full text/Total items : 28603/40634
Visitors : 4439536      Online Users : 598
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/987654321/17117

Title: 飼料添加甲基汞與無機汞對點帶石斑魚 (Epinephelus coioides) 蓄積與排除之影響
The Effect of Methylmercury and Inorganic Mercury On Tissue Accumulation and Elimination in Orange-spotted Grouper (Epinepheluscoioides) Following Oral Administration
Authors: Yao-Ren Hsu
許堯仁
Contributors: NTOU:Department of Aquaculture
國立臺灣海洋大學:水產養殖學系
Keywords: ;甲基汞;無機汞;石斑魚;蓄積;排除
Date: 2010
Issue Date: 2011-06-30T08:51:05Z
Abstract: 本論文研究目的在於探討分別以添加 1 mg/kg、5 mg/kg 甲基汞、無機汞飼料投餵點帶石斑魚 (Epinephelus coioides),對點帶石斑魚排泄物與肌肉、肝臟、魚皮、胃、腸、鰓絲、腎臟、脾臟、血液、腦、心臟等組織,總汞、甲基汞蓄積與排除之影響。結果顯示,無機汞處理組除了在腸、腎、鰓絲等組織總汞蓄積濃度顯著高於控制組外,其餘各組織與控制組並無顯著差異,且可於排泄物中發現大量的總汞及些許甲基汞的存在;甲基汞處理組在所有分析組織中總汞、甲基汞濃度皆顯著高於控制組,且可於排泄物偵測到總汞、甲基汞的存在;排除實驗中發現,若是甲基汞在肌肉、腦等組織蓄積將不易被排除,而在其他組織如腎、肝、鰓等組織改投餵控制組飼料 7 天後組織內甲基汞濃度則大幅下降;5 mg/kg 甲基汞處理組中,蓄積實驗最終日各組織甲基汞蓄積濃度依序為腎 (1856.67 μg/kg)>腸 (1383.33 μg/kg)>肝 (1176.67 μg/kg)>心 (883.00μg/kg)>胃 (723.33 μg/kg)>脾 (685.33 μg/kg)>腦 (528.00 μg/kg)>肌肉(392.67 μg/kg)>鰓 (367.00 μg/kg)>魚皮(194.67 μg/kg),且發現若以 1 mg/kg 甲基汞飼料投餵點帶石斑魚 7 天,組織吸收約 50 % 總投餵甲基汞量,以 5 mg/kg 甲基汞飼料投餵點帶石斑魚 7 天,組織約吸收 30 % 總投餵甲基汞量,其中皆以肌肉、肝臟為主要蓄積組織;實驗期間所有組別,其肌肉、肝臟、胃、魚皮組織藉由總汞、甲基汞檢驗發現,甲基汞處理組的總汞、甲基汞濃度均顯著高於控制組與無機汞處理組,並發現肌肉、肝臟、胃、腸、魚皮組織中甲基汞分別佔總汞含量的 63.88 % - 89.84 %、63.97 % - 90.27 %、7.62 % - 88.63 %、1.71 % - 95.77 %、27.46 % - 97.72 %。
The objective of this study is to investigate the accumulation and elimination of methylmercury and inorganic mercury in different tissues including feces, muscle, liver, skin, stomach, intestine, gill filament, kidney, spleen, blood, brain and heart in Orange-spotted Grouper (Epinephelus coioides) after oral administration at concentration of 1 mg/kg and 5 mg/kg for methylmercury and inorganic mercury. The results showed that in inorganic mercury treatment group, except for intestine, kidney and gill filament tissues which showed significantly higer total mercury concentrations, there is no significant difference between the concentrations of total mercury in other tissues and the control group. In addition considerable amount of total mercury and some methylmercury were detected in feces. In methylmercury treatment group, the concentrations of total mercury and methylmercury in tissues were significantly higher than that in the control group; and total mercury and methylmercury can be detected in the feces. For elimination study, methylmercury that accumulated in muscle and brain can hardly be eliminated. However, the concentrations of methylmercury in other tissues such as kidney, liver and gill filament decreased rapidly 7 days post oral administration. In 5 mg/kg methylmercury treatment group, methylmercury was accumulated in tissues in the order of kidney (1856.67 μg/kg)> intestine (1383.33 μg/kg)> liver (1176.67 μg/kg)> heart (883.00μg/kg)> stomach (723.33 μg/kg)> spleen (685.33 μg/kg)> brain (528.00 μg/kg)> muscle (392.67 μg/kg)> gill filament (367.00 μg/kg)> skin (194.67 μg/kg) referring to its concentration. After 7 days oral administration of 1 mg/kg and 5 mg/kg methylmercury, the absorption of methylmercury in tissues were approximately 50 % and 30 %, respectively. In the methylmercury treatment group, the concentrations of total mercury and methylmercury in muscle, liver, stomach and skin were significantly higher than that in control group and inorganic mercury treatment group. The percentages of methylmercury in the total mercury for muscle, liver, stomach, intestine and skin were found to be in the range of 63.88 % - 89.84 %, 63.97 % - 90.27 %, 7.62 % - 88.63 %, 1.71 % - 95.77 %, 27.46 % - 97.72 %, respectively.
URI: http://ethesys.lib.ntou.edu.tw/cdrfb3/record/#G0M97330018
http://ntour.ntou.edu.tw/ir/handle/987654321/17117
Appears in Collections:[水產養殖學系] 博碩士論文

Files in This Item:

File Description SizeFormat
index.html0KbHTML205View/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