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题名: Organ distribution and bioaccumulation of microcystins in freshwater fish at different trophic levels from the eutrophic Lake Chaohu, China
作者: Xie, LQ; Xie, P; Guo, LG; Li, L; Miyabara, Y; Park, HD
关键词: microcystin ; fish ; bioaccumulation ; organ distribution ; food chain
刊名: ENVIRONMENTAL TOXICOLOGY
发表日期: 2005-06-01
DOI: 10.1002/tox.20120
卷: 20, 期:3, 页:293-300
收录类别: ISTP ; SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]: Environmental Sciences ; Toxicology ; Water Resources
研究领域[WOS]: Environmental Sciences & Ecology ; Toxicology ; Water Resources
英文摘要: This article reports the organ distribution and bioaccumulation of hepatotoxic microcystins (MCs) in freshwater fishes at different trophic levels from the large, shallow, eutrophic Lake Chaohu in September 2003, when there were heavy surface blooms of toxic cyanobacteria. Among all fish, intestines and blood had the highest average content of MC-RR + MC-LR (22.0 and 14.5 mu g g(-1) DW, respectively), followed by liver, bile, and kidney (7.77, 6.32, and 5.81 mu g g(-1) DW, respectively), whereas muscle had the least (1.81 mu g g(-1) DW). MC content in muscle was highest in carnivorous fish (Culter ilishaeformis, 2.22 mu g g(-1) DW) and omnivorous fish (Carassius auratus, 1.96 mu g g(-1) DW) and was lowest in phytoplanktivorous fish (Hypophthalmichthys molitrix, 1.65 mu g g(-1) DW) and herbivorous fish (Parabramis pekinensis 0.660 mu g g(-1) DW). However, the amount of MC in the gut of H. molitrix (137 mu g g(-1) DW) was more than 20 times that in the other fish (< 6.50 mu g g(-1) DW). The MCs showed a tendency to accumulate up the food chain, and piscivorous fish at the top of the food chain were at high risk of exposure to MCs in Lake Chaohu. Our study is the first to report MC concentrations in the bile and blood of wild fish. One hundred grams of fish muscle would contain 2.64-49.7 mu g of MC-LR equivalent, or about 1.3-25 times the recommended tolerable daily intake of MC-LR by humans, indicating that fish are already severely contaminated by MCs and that the local authorities should warn the public of the risk of poisoning by eating the contaminated fish. (c) 2005 Wiley Periodicals, Inc.
关键词[WOS]: PEPTIDE TOXIN ; CYANOBACTERIA ; TOXICITY ; HEPATOTOXINS ; HEALTH ; LR ; RR
语种: 英语
WOS记录号: WOS:000229897500012
ISSN号: 1520-4081
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/27196
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.Shinshu Univ, Fac Sci, Dept Environm Sci, Matsumoto, Nagano 3908621, Japan
2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
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