Biotransformation and detoxification of inorganic arsenic in a marine juvenile fish Terapon jarbua after waterborne and dietborne exposure
Zhang, W; Huang, LM; Wang, WX; wwang@ust.hk
2012
发表期刊JOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
卷号221页码:162-169
摘要Arsenic (As) is a major hazardous metalloid in many aquatic environments. This study quantified the biotransformation of two inorganic As species [As(III) and As(V)] in a marine juvenile grunt Terapon jarbua following waterborne and dietborne exposures for 10 d. The fish were fed As contaminated artificial diets at nominal concentrations of 50,150, and 500 As(III) and As(V)/g (dry weight), and their transformation and growth responses were compared to those exposed to 100 mu g/L waterborne As(III) and As(V). Within the 10 d exposure period, waterborne and dietborne inorganic As exposure had no significant effect on the fish growth performance. The bioaccumulation of As was very low and not proportional to the inorganic As exposure concentration. We demonstrated that both inorganic As(III) and As(V) in the dietborne and waterborne phases were rapidly biotransformed to the less toxic arsenobetaine (AsB, 89-97%). After exposure to inorganic As. T. jarbua developed correspondingly detoxified strategies, such as the reduction of As(V) to As(III) followed by methylation to less toxic organic forms, as well as the synthesis of metal-binding proteins such as metallothionein-like proteins. This study elucidated that As(III) and As(V) had little potential toxicity on marine fish. (C) 2012 Elsevier B.V. All rights reserved.
部门归属[Zhang, Wei; Wang, Wen-Xiong] HKUST, Div Life Sci, Kowloon, Hong Kong, Peoples R China; [Zhang, Wei] Chinese Acad Sci, Key Lab Marine Bioresources Sustainable Utilizat, S China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China; [Zhang, Wei] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
关键词Arsenic Waterborne Exposure Dietborne Exposure Biotransformation Speciation Fish
学科领域Engineering, Environmental ; Engineering, Civil ; Environmental Sciences
语种英语
资助项目LMB
WOS记录号WOS:000305366000020
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文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/9878
专题中科院海洋生物资源可持续利用重点实验室
通讯作者wwang@ust.hk
推荐引用方式
GB/T 7714
Zhang, W,Huang, LM,Wang, WX,et al. Biotransformation and detoxification of inorganic arsenic in a marine juvenile fish Terapon jarbua after waterborne and dietborne exposure[J]. JOURNAL OF HAZARDOUS MATERIALS,2012,221:162-169.
APA Zhang, W,Huang, LM,Wang, WX,&wwang@ust.hk.(2012).Biotransformation and detoxification of inorganic arsenic in a marine juvenile fish Terapon jarbua after waterborne and dietborne exposure.JOURNAL OF HAZARDOUS MATERIALS,221,162-169.
MLA Zhang, W,et al."Biotransformation and detoxification of inorganic arsenic in a marine juvenile fish Terapon jarbua after waterborne and dietborne exposure".JOURNAL OF HAZARDOUS MATERIALS 221(2012):162-169.
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