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题名: A non-classical biomanipulation experiment in Gonghu Bay of Lake Taihu: control of Microcystis blooms using silver and bighead carp
作者: Guo, Longgen1; Wang, Qing1; Xie, Ping1; Tao, Min1; Zhang, Jing1; Niu, Yuan1; Ma, Zhimei1
关键词: Lake Taihu ; silver carp ; bighead carp ; Microcystis bloom ; microcystin
刊名: AQUACULTURE RESEARCH
发表日期: 2015-09-01
DOI: 10.1111/are.12375
卷: 46, 期:9, 页:2211-2224
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Fisheries
研究领域[WOS]: Fisheries
英文摘要: A non-classical biomanipulation experiment was carried out in Gonghu Bay of Lake Taihu in 2009. Silver and bighead carp were stocked in a large fish enclosure to control cyanobacterial blooms. Water quality, plankton abundance, and the intracellular and extracellular microcystins (MCs) in lake water were investigated monthly in 2009. The concentrations of nitrogen nutrients were significantly lower in the fish enclosure than in the surrounding lake, while phosphorus (especially total phosphorus) concentration was higher in fish enclosure. During the blooming period, Cyanophyta contributed to more than 90% of the phytoplankton in the surrounding lake, whereas it represented only 40-80% in the fish enclosure. The phytoplankton and crustacean zooplankton biomasses and the zooplankton/phytoplankton ratios were all significantly lower in the fish enclosure than in the lake. This result suggested that silver and bighead carp can effectively suppress the phytoplankton biomass with the initial stocking density of 7.5gm(-3) for silver carp and 1.1gm(-3) for bighead carp, despite a simultaneous decrease in the grazing pressure of the zooplankton on the phytoplankton. During the blooming period, the intracellular and extracellular MCs in the fish enclosure were reduced by 93.8% and 69.8% compared with the surrounding lake. MCs content varied from 0.34 to 18.8ng (mean 4.8ng) MC-LReqg(-1) wet weight in the muscle sample of silver and bighead carp in the experimental enclosure, which suggested that these fish were safe to consume for human. However, the long-term effects of MCs on aquatic ecosystem and on public health cannot be overlooked.
关键词[WOS]: HYPOPHTHALMICHTHYS-MOLITRIX ; ENCLOSURE EXPERIMENT ; IN-SITU ; EUTROPHIC LAKE ; ARISTICHTHYS-NOBILIS ; COMMUNITY STRUCTURE ; PHYTOPLANKTON ; FISH ; PLANKTON ; DYNAMICS
语种: 英语
WOS记录号: WOS:000358534500017
ISSN号: 1355-557X
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/25962
Appears in Collections:淡水生态学研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Wuhan 430072, Peoples R China
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