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学科主题: Limnology
题名: Grazing on toxic and non-toxic Microcystis aeruginosa PCC7820 by Unio douglasiae and Corbicula fluminea
作者: Liu, Ying1; Xie, Ping1; Wu, Xiao-Ping2
通讯作者: Xie, P, Chinese Acad Sci, Donghu Lake Ecosyst Expt Stn, Inst Hydrobiol, Wuhan 430072, Peoples R China
关键词: Microcystis aeruginosa PCC7820 ; Scenedesmus obliquus ; Unio douglasiae ; Corbicula fluminea ; Excrete products
刊名: LIMNOLOGY
发表日期: 2009-04-01
DOI: 10.1007/s10201-008-0255-3
卷: 10, 期:1, 页:1-5
收录类别: SCI
文章类型: Article
部门归属: [Liu, Ying; Xie, Ping] Chinese Acad Sci, Donghu Lake Ecosyst Expt Stn, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Wu, Xiao-Ping] Nanchang Univ, Coll Life Sci, Nanchang 330047, Jiangxi, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Basic Research Program of China [2008CB418101]
类目[WOS]: Limnology
研究领域[WOS]: Marine & Freshwater Biology
摘要: To explore the potential grazing effects of mussels on Microcystis aeruginosa, a common bloom-forming phytoplankton, Unio douglasiae and Corbicula fluminea were fed with Scenedesmus obliquus, toxic and non-toxic strains of Microcystis aeruginosa as single food and as mixtures in the laboratory. When fed with single foods, U. douglasiae has similar clearance rates on the three algae populations, while C. fluminea has significantly lower clearance rate on toxic M. aeruginosa than those on the other two algae populations. When fed with mixture foods, both the mussels show significantly higher clearance rates than on single foods. The clearance rates of U. douglasiae on the different food mixtures are not significantly different, and C. fluminea has a significantly lower clearance rate on the toxic food mixtures than that on non-toxic food mixtures. Although the relative lower clearance rates of C. fluminea on toxic food, we may still deduce that both the mussels can exert grazing pressure on phytoplankton. The deduction is supported by the composition of the excretion products. The excretion products (faeces and pseudofaeces) of both mussels contained mainly S. obliquus. In both mixed-food treatments, the ratios of S. obliquus to M. aeruginosa in the excrete products are significantly higher than those in the foods. Therefore, it can be concluded that both mussels prefer M. aeruginosa to S. obliquus, and can cause grazing pressure on M. aeruginosa.
英文摘要: To explore the potential grazing effects of mussels on Microcystis aeruginosa, a common bloom-forming phytoplankton, Unio douglasiae and Corbicula fluminea were fed with Scenedesmus obliquus, toxic and non-toxic strains of Microcystis aeruginosa as single food and as mixtures in the laboratory. When fed with single foods, U. douglasiae has similar clearance rates on the three algae populations, while C. fluminea has significantly lower clearance rate on toxic M. aeruginosa than those on the other two algae populations. When fed with mixture foods, both the mussels show significantly higher clearance rates than on single foods. The clearance rates of U. douglasiae on the different food mixtures are not significantly different, and C. fluminea has a significantly lower clearance rate on the toxic food mixtures than that on non-toxic food mixtures. Although the relative lower clearance rates of C. fluminea on toxic food, we may still deduce that both the mussels can exert grazing pressure on phytoplankton. The deduction is supported by the composition of the excretion products. The excretion products (faeces and pseudofaeces) of both mussels contained mainly S. obliquus. In both mixed-food treatments, the ratios of S. obliquus to M. aeruginosa in the excrete products are significantly higher than those in the foods. Therefore, it can be concluded that both mussels prefer M. aeruginosa to S. obliquus, and can cause grazing pressure on M. aeruginosa.
关键词[WOS]: MUSSEL DREISSENA-POLYMORPHA ; ZEBRA MUSSEL ; PHYTOPLANKTON ; LAKE ; CYANOBACTERIA ; RESTORATION ; SHALLOW ; BLOOMS ; SESTON
语种: 英语
WOS记录号: WOS:000264964500001
ISSN号: 1439-8621
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/7788
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.Chinese Acad Sci, Donghu Lake Ecosyst Expt Stn, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Nanchang Univ, Coll Life Sci, Nanchang 330047, Jiangxi, Peoples R China

Recommended Citation:
Liu, Ying; Xie, Ping; Wu, Xiao-Ping.Grazing on toxic and non-toxic Microcystis aeruginosa PCC7820 by Unio douglasiae and Corbicula fluminea,LIMNOLOGY,2009,10(1):1-5
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