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Severe thiamine deficiency in eastern Baltic cod Gadus

Accumulation and effects of nodularin from a single and repeated oral doses of cyanobacterium nodularia spumigena on flounder (platichthys flesus L.) Pekka J. Vuorinen, Vesa O. Sipiä, Krister Karlsson, Marja Keinänen, Ambrose Furey, Orla Allis, Kevin James, Ulla Perttilä, Eija Rimaila-Pärnänen, Jussi A.O. Meriluoto Salomon, PS, Janson, S & Graneli, E 2003, ' Molecular identification of bacteria associated with filaments of Nodularia spumigena and their effect on the cyanobacterial growth ', Harmful Algae, vol. 2, nr. 4, s. 261-272.

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Apr 25, 2018 with a high economic impact11 . Other symptoms include lack of vigour, leaf yellowing, premature defoliation, reduction in size and number of  Aug 20, 2019 But there's one side effect we're not so sure about, and that's the strange white spots we see appearing on our arms. Slightly larger than freckles,  May 27, 2020 Cylindrospermopsin Á Effects Á Fish Á Nodularins. Introduction NOD was first isolated from Nodularia spumigena, a cyanobacterium that is  chemical effects and the chemical structure dif- Effect of Microcystis strains ( non-producers of microcystins) on the A toxic bloom of Nodularia spumigena.

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fixation and N2 fixation by Nodularia spumigena. Aquat Microb Ecol 77:.

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The cells were exposed to the following treatments: nutrient-sufficient (+NP), nitrogen We report a modulating effect of mesozoo- plankton grazing on cellular nodularin content in N. spumigena expressed as a decrease in cell- bound toxin concentration in the presence of copepods compared with the cyanobacterium in similar assemblages without copepods. Thus far, the negative effects of Nodularia spumigena blooms on aquatic organisms have been mainly attributed to the production of the hepatotoxic nodularin (NOD). In the current work, the accumulation of other N. spumigena metabolites in blue mussels and crustaceans, and their effect on Thamnocephalus platyurus and Artemia franciscana, were The bloom-forming cyanobacterium Nodularia spumigena produces toxic compounds, including nodularin, which is known to have adverse effects on various organisms.

Nodularia spumigena effects

Stimulating effects of added iron were more pronounced at continuously high incident irradiance. A bi-directional approach of iron manipulation comprising either iron or siderophore addition revealed a medium level of iron starvation in near-coast Nodularia bloom material. Significant stimulation of the quantum efficiency of photosystem II (up to 100%) also indicated photosynthetic performance as a main target of iron fertilization. Effects of NODLN on FlounderThe administration of NODLN by force-feeding into flounder, either as a single high dose 4 days before sampling or as three smaller doses 3 days apart, clearly caused some hepatocellular damage. Three filamentous and heterocystous cyanobacterial strains of Nodularia, Nodularia baltica, Nodularia harveyana and Nodularia spumigena, have been tested for the presence and induction of ultraviolet-absorbing/screening mycosporine-like amino acids (MAAs) by simulated solar radiation in combination … The bacterial strain B 30, added at different concentrations to the N. spumigena cultures, showed a negative, retarding effect at all concentrations used, ranging from a 10% lower cyanobacterial biomass yield relative to controls at 5×10 2 bacterial cells ml −1 up to 30% at 5×10 7 bacterial cells ml −1 ( Fig. 5 ).
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1, s. 85-101. / Allelopathic effects of the Baltic cyanobacteria Nodularia spumigena, Aphanizomenon flos-aquae and Anabaena lemmermannii on algal monocultures. In: Journal of Experimental Marine Biology and Ecology.

In the current work, the accumulation of other N. spumigena metabolites in blue mussels and crustaceans, and their effect on Thamnocephalus platyurus and Artemia franciscana, were examined. The variables studied here did not show any effects of NODLN.
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in nitrogen-amended phytoplankton have been detected, and artificially supplemented cells of Nodularia spumigena KAC 66 benefited from iron as well (Stolte et al., 2006).