| Life history responses of Daphnia magna feeding on toxic Microcystis aeruginosa alone and mixed with a mixotrophic Poterioochromonas species. | |
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MedLine Citation:
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PMID: 19748652 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The toxic effects of a mixotrophic golden alga (Poterioochromonas sp. strain ZX1) and a cyanobacterium Microcystis aeruginosa grazed by Poterioochromonas to a cladoceran were investigated through life history experiments using Daphnia magna. Poterioochromonas cultured in two ways (fed M. aeruginosa in an inorganic medium or grown in an organic medium) both induced starvation-like effects on D. magna, indicating that Poterioochromonas is neither acutely toxic nor a good food for D. magna. Despite a microcystin-LR content of 10(-8)microgcell(-1) in M. aeruginosa, no toxins were accumulated in Poterioochromonas fed the cyanobacterium. The toxic effect of M. aeruginosa to D. magna was significantly reduced in the presence of Poterioochromonas, which may be performed in two ways: decrease M. aeruginosa cells ingestion of D. magna by grazing on M. aeruginosa; and decrease the toxicity of the medium by degrading the toxins released by M. aeruginosa. This study provides new information on the interactions between a cyanobacterium and its grazer under laboratory conditions and may increase our understanding of the ecological significance of such interactions in the aquatic food webs. |
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Authors:
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Xue Zhang; Trine Perlt Warming; Hong-Ying Hu; Kirsten Seestern Christoffersen |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-08-26 |
Journal Detail:
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Title: Water research Volume: 43 ISSN: 1879-2448 ISO Abbreviation: Water Res. Publication Date: 2009 Dec |
Date Detail:
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Created Date: 2009-12-01 Completed Date: 2010-02-19 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0105072 Medline TA: Water Res Country: England |
Other Details:
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Languages: eng Pagination: 5053-62 Citation Subset: IM |
Affiliation:
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Environmental Simulation and Pollution Control State Key Joint Laboratory, Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, PR China. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Algae, Golden-Brown
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metabolism* Animals Bacterial Toxins / metabolism, toxicity* Daphnia / drug effects*, growth & development, metabolism Life Cycle Stages / drug effects* Marine Toxins / metabolism, toxicity* Microcystins / metabolism, toxicity* Microcystis / metabolism* Toxicity Tests |
| Chemical | |
Reg. No./Substance:
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0/Bacterial Toxins; 0/Marine Toxins; 0/Microcystins; 0/cyanobacterial toxin |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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