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Dynamics of microcystins-LR and -RR in the phytoplanktivorous silver carp in a sub-chronic toxicity experiment
Liqiang Xie; Ping Xie; Kazuhiko Ozawa; Takamitsu Honma; Atsushi Yokoyama; Ho-Dong Park; Xie, P, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
2004
Source PublicationENVIRONMENTAL POLLUTION
Volume127Issue:3Pages:431-439
AbstractA sub-chronic toxicity experiment was conducted to examine tissue distribution and depuration of two microcystins (microcystin-LR and microcystin -RR) in the phytoplanktivorous filter-feeding silver carp during a course of 80 days. Two large tanks (A, B) were used, and in Tank A, the fish were fed naturally with fresh Microcystis viridis cells (collected from a eutrophic pond) throughout the experiment, while in Tank B, the food of the fish were M. viridis cells for the first 40 days and then changed to artificial carp feed. High Performance Liquid Chromatography (HPLC) was used to measure MC-LR and MC-RR in the M. viridis cells, the seston, and the intestine, blood, liver and muscle tissue of silver carp at an interval of 20 days. MC-RR and MC-LR in the collected Microcystis cells varied between 268-580 and 110-292 mug g(-1) DW, respectively. In Tank A, MC-RR and MC-LR varied between 41.5-99.5 and 6.9-15.8 mug g(-1) DW in the seston, respectively. The maximum MC-RR in the blood, liver and muscle of the fish was 49.7, 17.8 and 1.77 mug g(-1) DW, respectively. No MC-LR was detectable in the muscle and blood samples of the silver carp in spite of the abundant presence of this toxin in the intestines (for the liver, there was only one case when a relatively minor quantity was detected). These findings contrast with previous experimental results on rainbow trout. Perhaps silver carp has a mechanism to degrade MC-LR actively and to inhibit MC-LR transportation across the intestines. The depuration of MC-RR concentrations occurred slowly than uptakes in blood, liver and muscle, and the depuration rate was in the order of blood > liver > muscle. The grazing ability of silver carp on toxic cyanobacteria suggests an applicability of using phytoplanktivorous fish to counteract cyanotoxin contamination in eutrophic waters. (C) 2003 Elsevier Ltd. All rights reserved.
KeywordSub-chronic Toxicity Experiment Microcystin-lr And -rr Microcystis Viridis Phytoplanktivorous Sliver Carp Deputation Evolution
DepartmentChinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China; Shinshu Univ, Fac Sci, Dept Environm Sci, Matsumoto, Nagano 3908621, Japan
Subject AreaEnvironmental Sciences
Indexed BySCI
WOS IDWOS:000187864000014
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/9586
Collection期刊论文
Corresponding AuthorXie, P, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Liqiang Xie,Ping Xie,Kazuhiko Ozawa,et al. Dynamics of microcystins-LR and -RR in the phytoplanktivorous silver carp in a sub-chronic toxicity experiment[J]. ENVIRONMENTAL POLLUTION,2004,127(3):431-439.
APA Liqiang Xie.,Ping Xie.,Kazuhiko Ozawa.,Takamitsu Honma.,Atsushi Yokoyama.,...&Xie, P, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China.(2004).Dynamics of microcystins-LR and -RR in the phytoplanktivorous silver carp in a sub-chronic toxicity experiment.ENVIRONMENTAL POLLUTION,127(3),431-439.
MLA Liqiang Xie,et al."Dynamics of microcystins-LR and -RR in the phytoplanktivorous silver carp in a sub-chronic toxicity experiment".ENVIRONMENTAL POLLUTION 127.3(2004):431-439.
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