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Role of Microcystins in Poisoning and Food Ingestion Inhibition of Daphnia galeata Caused by the Cyanobacterium Microcystis aeruginosa
ABSTRACT The effects of microcystins on Daphnia galeata, a typical filter-feeding grazer in eutrophic lakes, were investigated. To do this, the microcystin-producing wild-type strain MicrocystisExpand
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Isolation, Characterization, and Quantitative Analysis of Microviridin J, a New Microcystis Metabolite Toxic to Daphnia
This paper describes the purification and characterization of microviridin J, a newly discovered metabolite of Microcystis that causes a lethal molting disruption in Daphnia spp., upon ingestion ofExpand
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Identification of peptide metabolites of Microcystis (Cyanobacteria) that inhibit trypsin-like activity in planktonic herbivorous Daphnia (Cladocera).
Cyanobacteria are recognized as producers of a broad variety of bioactive metabolites. Among these, the peptides synthesized by the non-ribosomal peptide synthetase pathway occur in high structuralExpand
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Alternative blooming of Aphanizomenon flos-aquae or Planktothrix agardhii induced by the timing of the critical nitrogen:phosphorus ratio in hypertrophic riverine lakes
Groser Muggelsee and Langer See are limnologically similar but during an investi- gation from 1990 until 1993 marked differences were observed in the species that dominated during the summer blooms.Expand
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Mechanisms of the inhibitory effect of the cyanobacterium Microcystis aeruginosa on Daphnia galeata's ingestion rate
The possible effects of five Microcystis aeruginosa strains (two unicellular and three colony forming) on the filtering and feeding behavior of Daphnia galeata were investigated to clarify theExpand
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Are the same Compounds in Microcystis responsible for Toxicity to Daphnia and Inhibition of its Filtering Rate
Three strains of Microcystis when supplied to Daphnia in mixtures with Scenedesmus differed in their power to inhibit filtering rates. The axenic strain PCC 7806 had the strongest effect (93%Expand
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Daphnia and toxic blooms of Microcystis aeruginosa in Bautzen Reservoir (GDR)
As a part of a whole-lake, long-term experiment in biomanipulation in. the hypertrophic Bautzen reservoir (G.D.R.), during three years (1984–1986) the dynamics of mouse-related LD 50 of MicrocystisExpand
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Does the toxic effect of Microcystis aeruginosa on Daphnia galeata depend on microcystin ingestion rate
The aim of this study was to test the hypothesis that toxicity of Microcystis aeruginosa to Daphnia galeata can be explained by microcystins. For that purpose, the relationship between the strengthExpand
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Strain‐specific Influence of Microcystis Aeruginosa on Food Ingestion and Assimilation of some Cladocerans and Copepods
Ingestion rates where estimated for daphnids, Cyclops spp. and Bosmina (Eubosmina) coregoni thersites fed hepatotoxic and non-toxic M. aeruginosa either separate or mixed with the readily availableExpand
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Plasmids in toxic and nontoxic strains of the cyanobacteriumMicrocystis aeruginosa
The plasmid content and toxicity of nine different strains ofMicrocystis aeruginosa have been analyzed. The two toxic strains of the HUB Culture Collection were found to carry each two plasmids, pMA1Expand
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