National Taiwan Ocean University Institutional Repository:Item 987654321/44449
English  |  正體中文  |  简体中文  |  Items with full text/Total items : 28588/40619
Visitors : 4187272      Online Users : 51
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search
NTOUR > I Chiu Liao Academician zone > 會議論文 >  Item 987654321/44449

Please use this identifier to cite or link to this item:

Title: Toxicity of three heavy metals to Macrobrachium rosenbergii. In:R. Hirano and I. Hanyu (eds.)
Authors: Liao, I C.;Hsieh, C.S.
Date: 1990
Issue Date: 2017-11-23
Abstract: Abstract:
The acute toxicities of Cu, Cd and Zn to various larval stages of the giant freshwater prawn, Macrobrachium Tosenberaii, and the effects of three heavy metals on the survival and growth of juvenile prawn (0.78 + 0.05 g), and their accumulation and elimination in the young prawn (4.76 + 0.43 g) were studied. The results showed that the tolerance of various larval stages of prawns to Cu, Cd and Zn reduced as development advanced and that the toxicities of three heavy metals to the prawn differed at each stage. The growth and survival of the tested group prawn (8 ppb for Cu ; 1, 2, 4, 8 ppb for Cd and 200, 400 ppb for Zn) were significantly less than those in the control group (p<0.05). Among the tissues tested (shelled cephalothorax, muscle and shell), the shelled cephalothorax obtained the highest accumulation. The accumulation rates varied with the kind and the concentration of heavy metals. These generally peaked after 8-16 days of exposure, and either remained stable or declined thereafter. Higher concentrations also resulted in higher levels of accumulation. When the prawn were transferred to clean freshwater after 32 days of exposure, the accumulated heavy metal markedly decreased over a 20-day period.
Appears in Collections:[I Chiu Liao Academician zone] 會議論文

Files in This Item:

There are no files associated with this item.

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