2015-11-01

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 Thamnocepha …

It is a liver carcinogen due to the inhibition of protein phosphataes. N. spumigena was characterized by a stronger allelopathic activity than Synechococcus sp., showing a negative effect on all target species. The highest decline in growth, as well as the most apparent cell physical damage, was observed for the diatom S. marinoi. Our findings suggest that cyanobacterial allelochemicals are associated with the cell physical damage, as well as a reduced performance in respiration and photosynthesis system in the studied microalgae which cause the inhibition of Histopathology revealed complete loss of liver architecture after 1-2 days of the single oral dose. From day 4 to 8, there was partial recovery of liver cells. NODLN did not affect thiamine levels or water content of trout liver. The results showed that NODLN rapidly induces severe but reversible liver damage.

Nodularia spumigena effects

NODLN did not affect thiamine levels or water content of trout liver. The results showed that NODLN rapidly induces severe but reversible liver damage. N. spumigena produces the hepatotoxin, nodularin (Rinehart et al., 1988), and has been reported to affect aquatic and terrestrial animals (Landsberg, 2002). A. flos-aquae and Anabaena spp. are generally not toxic in the Baltic Sea (Sivonen et al., 1989). In freshwater environments, in contrast, both genera produce toxins (Landsberg, 2002).

In the presence of ammonium ion, Nodularia spumigena strain AV1, a filamentous, heterocystous cyanobacterium isolated from the Baltic Sea, lost aerobic nitrogen-fixation activity while maintaining heterocyst frequency along the filaments.

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.

A lab. expt. with the filamentous cyanobacteria Nodularia spumigena and the chain-forming diatom Melosira cf. arctica showed neg. responses in photosynthetic activity (EC10 = 8.6% for N. spumigena) and increased primary productivity (EC10 = 5.5% for M. cf. arctica), implying species-specific responses to scrubber washwater discharge.

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Semi-continuous Effects of dissolved organic matter on the growth of Nodularia spumigena (Cyanophyceae) cultivated under N or P deficiency | SpringerLink Allelopathy, the release of extracellular compounds that inhibit the growth of other microorganisms, may be one factor contributing to the formation and/or maintenance of cyanobacterial blooms. We investigated the allelopathic effects of three cyanobacterial species (Nodularia spumigena, Aphanizomenon flos-aquae and Anabaena lemmermannii) that frequently form mass-occurrences in … METHOD Sampling and test organisms This study consisted of two experiments designed to test the effects of grazing on nodularin concentrations and reciprocal effects of Nodularia spumigena on mortality and growth of the grazers. In Expt I, N. spumigena was incubated in natural, 90 m m plankton with (12–33 ind. L 2 1) or without copepods.
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(ANOVA, F 1,4 =88.1, p=0.001), whereas the stationary phase culture filtrate did not affect either of the species significantly (ANOVA, p>0.05 for both). 2002-12-03 · Nodularin (NODLN) is a cyclic pentapeptide hepatotoxin that is regularly produced in high amounts by the cyanobacterium Nodularia spumigena in the Baltic Sea, and can bioaccumulate in Baltic biota. Baltic sea trout (Salmo trutta m.

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 Thus far, the negative effects of Nodularia spumigena blooms on aquatic organisms have been mainly attributed to the production of the hepatotoxic nodularin (NOD).
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av J Engelhardt · 2020 · Citerat av 5 — Impacts of diet on thiamine status of Lake Ontario American eels. L.) exposed orally to Nodularia spumigena under laboratory conditions.

In: Journal of Experimental Marine Biology and Ecology.

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

Request PDF | Nodularia spumigena Peptides-Accumulation and Effect on Aquatic Invertebrates | Thus far, the negative effects of Nodularia spumigena blooms on aquatic organisms have been mainly Effect of salinity on growth and toxin production in cultures of the bloom-forming cyanobacterium Nodularia spumigena from Australian waters. Phycologia … 2008-12-15 / Allelopathic effects of the Baltic cyanobacteria Nodularia spumigena, Aphanizomenon flos-aquae and Anabaena lemmermannii on algal monocultures. I: Journal of Experimental Marine Biology and Ecology. 2004 ; Vol. 308, Nr. 1. s. 85-101.

The highest decline in growth, as well as the most apparent cell physical damage, was observed for the diatom S. marinoi. Se hela listan på microbewiki.kenyon.edu 2004-09-08 · The filtrate of the N. spumigena culture in exponential phase had a negative allelopathic effect on both T. weissflogii (ANOVA, F 1,4 =20.2, p=0.011; Fig. 3), and Rhodomonas sp. (ANOVA, F 1,4 =88.1, p=0.001), whereas the stationary phase culture filtrate did not affect either of the species significantly (ANOVA, p>0.05 for both). 2002-12-03 · Nodularin (NODLN) is a cyclic pentapeptide hepatotoxin that is regularly produced in high amounts by the cyanobacterium Nodularia spumigena in the Baltic Sea, and can bioaccumulate in Baltic biota. Baltic sea trout (Salmo trutta m. trutta L.) were exposed orally to a single dose of food containing NODLN (125 mg/kg ww) from N. spumigena (strain AV1, from the Baltic Sea).