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Organ distribution and bioaccumulation of microcystins in freshwater fish at different trophic levels from the eutrophic Lake Chaohu, China
Xie, LQ; Xie, P; Guo, LG; Li, L; Miyabara, Y; Park, HD; Xie, P, Shinshu Univ, Fac Sci, Dept Environm Sci, Matsumoto, Nagano 3908621, Japan
2005
Conference Name6th International Conference on Toxic Cyanobacteria
Source PublicationENVIRONMENTAL TOXICOLOGY
Pages293-300
Conference DateJUN 21-27, 2004
Conference PlaceBergen, NORWAY
DepartmentShinshu Univ, Fac Sci, Dept Environm Sci, Matsumoto, Nagano 3908621, Japan; Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
AbstractThis 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.
KeywordMicrocystin Fish Bioaccumulation Organ Distribution Food Chain
Indexed BySCI
Language英语
WOS IDWOS:000229897500012
Citation statistics
Cited Times:181[WOS]   [WOS Record]     [Related Records in WOS]
Document Type会议论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/11791
Collection会议论文
Corresponding AuthorXie, P, Shinshu Univ, Fac Sci, Dept Environm Sci, Matsumoto, Nagano 3908621, Japan
Recommended Citation
GB/T 7714
Xie, LQ,Xie, P,Guo, LG,et al. Organ distribution and bioaccumulation of microcystins in freshwater fish at different trophic levels from the eutrophic Lake Chaohu, China[C],2005:293-300.
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