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Grazing on toxic and non-toxic Microcystis aeruginosa PCC7820 by Unio douglasiae and Corbicula fluminea
Liu, Ying1; Xie, Ping1; Wu, Xiao-Ping2; Xie, P, Chinese Acad Sci, Donghu Lake Ecosyst Expt Stn, Inst Hydrobiol, Wuhan 430072, Peoples R China
2009-04-01
Source PublicationLIMNOLOGY
ISSN1439-8621
Volume10Issue:1Pages:1-5
AbstractTo 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.; 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.
SubtypeArticle
KeywordMicrocystis Aeruginosa Pcc7820 Scenedesmus Obliquus Unio Douglasiae Corbicula Fluminea Excrete Products
Department[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
Subject AreaLimnology
DOI10.1007/s10201-008-0255-3
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Funding OrganizationNational Basic Research Program of China [2008CB418101] ; National Basic Research Program of China [2008CB418101] ; National Basic Research Program of China [2008CB418101] ; National Basic Research Program of China [2008CB418101]
Indexed BySCI
Language英语
WOS Research AreaMarine & Freshwater Biology
WOS SubjectLimnology
WOS IDWOS:000264964500001
WOS KeywordMUSSEL DREISSENA-POLYMORPHA ; ZEBRA MUSSEL ; PHYTOPLANKTON ; LAKE ; CYANOBACTERIA ; RESTORATION ; SHALLOW ; BLOOMS ; SESTON
Funding OrganizationNational Basic Research Program of China [2008CB418101] ; National Basic Research Program of China [2008CB418101] ; National Basic Research Program of China [2008CB418101] ; National Basic Research Program of China [2008CB418101]
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/7788
Collection期刊论文
Corresponding AuthorXie, P, Chinese Acad Sci, Donghu Lake Ecosyst Expt Stn, Inst Hydrobiol, Wuhan 430072, Peoples R China
Affiliation1.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
GB/T 7714
Liu, Ying,Xie, Ping,Wu, Xiao-Ping,et al. Grazing on toxic and non-toxic Microcystis aeruginosa PCC7820 by Unio douglasiae and Corbicula fluminea[J]. LIMNOLOGY,2009,10(1):1-5.
APA Liu, Ying,Xie, Ping,Wu, Xiao-Ping,&Xie, P, Chinese Acad Sci, Donghu Lake Ecosyst Expt Stn, Inst Hydrobiol, Wuhan 430072, Peoples R China.(2009).Grazing on toxic and non-toxic Microcystis aeruginosa PCC7820 by Unio douglasiae and Corbicula fluminea.LIMNOLOGY,10(1),1-5.
MLA Liu, Ying,et al."Grazing on toxic and non-toxic Microcystis aeruginosa PCC7820 by Unio douglasiae and Corbicula fluminea".LIMNOLOGY 10.1(2009):1-5.
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