We studied interactions between the cyanobacterium Nodularia spumigena and microalgae (Rhodomonas salina and Tetraselmis suecica) as well as effects of zooplankton (copepod Eurytemora affinis) grazing on these interactions. N. spumigena was incubated without algae or with algae at different concentrations and with or without copepods
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.
Copyright © 2018 Elsevier Ltd. All rights reserved. PMID: 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. 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.
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). N. spumigenawas characterized by a stronger allelopathic activity than Synechococcussp., 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. Nodularia spumigena är en regelbundet återkommande art i Östersjöns planktonsamhälle under sommaren och kan ställa till stora problem i samband med algblomning.
A clonal isolate, termed L575, of the filamentous brackish-water cyanobacterium Nodularia spumigena Mertens emend. was found to produce a potent hepatotoxic peptide (50% lethal intraperitoneal dose for the mouse, 60 micrograms/kg) with chemical and toxicological properties similar to those of the hepatotoxic heptapeptides produced by other freshwater planktonic cyanobacteria.
Nodularia cells occasionally form heavy algal blooms. Some strains produce a cyanotoxin called nodularin R, which is harmful to humans.
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Our results demonstrate an overall stimulating effect of ris-ing pCO2 on C and N2 fixation, as well as on cell growth.
Effects of toxic cyanobacteria on a plankton assemblage: community development during decay of Nodularia spumigena Jonna Engström-Öst 1,2, *, Marja Koski 2,3, **, Katrin Schmidt 4 , Markku Viitasalo 1 , Sigrún H. Jónasdóttir 5 , Marjaana Kokkonen 3 , Sari Repka 6 , Kaarina Sivonen 6
Download Citation | On Jan 1, 2007, W Davies published Effects of the cyanobacterium Nodularia spumigena on selected estuarine fauna | Find, read and cite all the research you need on ResearchGate
growth of Nodularia spumigena and the related fluxes of car-bon, nitrogen, and phosphorus. In particular we wanted to investigate the effect of ocean acidification on the exudation of organic matter and its subsequent recycling by extracel-lular enzymes in a Nodularia spumigena batch experiment. spumigena (Cyanobacteriaceae) ANNL. HUBER Department ofSoil Science andPlant Nutrition, University ofWestern Australia, Nedlands, WesternAustralia 6009 Received 7 March 1984/Accepted 6 August 1984 Nutritional and physical factors which influence the germination of akinetes of Nodularia spumigena (Cyanobacteriaceae) were examined. Allelopathic effects of Nodularia spumigena. As previously described, nodularin was not de-tectable in the media until the stationary gr owth.
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2009-07-22 Also, the possible transfer of toxins from one trophic level to another and the effect of different phases of cyanobacteria blooms on the pelagial carbon flow are largely unknown.6 Fig. 2 .62Development of parameters showing cyanobacterial decay during the experiment in mesocosm bags with Nodularia spumigena (n = 4), and in the control without cyanobacteria. Nodularia spumigena is an estuarine cyanobacteria that produces the toxin nodularin. This toxic cyanobacteria is known to have caused death to domestic and wild animals and is recognised as dangerous to human health. N. spumigena causes harmful algal blooms in many parts of the world including Australia. 2019-12-21 1986-03-01 Silveira and Odebrecht Effects of Salinity and T emperature on the Nodularia spumigena animal mortality, contamination of seafood, degradation of water quality ( V an Buynder et al., 2001 ), a Massive blooms of toxic cyanobacteria frequently occur in the central Baltic Sea during the summer.
Semi-continuous monocultures of N. spumigena Mertens were established. The cells were exposed to the following treatments: nutrient-sufficient (+NP), nitrogen-deficient without DOM (−N) and with DOM (−NDOM), and phosphorus-deficient without DOM (−P) and with DOM (−PDOM).
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the negative effects of Nodularia spumigena blooms on aquatic organisms have been mainly attributed to the production of the hepatotoxic nodularin NOD.
reducedto0.02and0.04d−1.Incomparison,Nodularia NSPI-05 from Peel Inlet, Australia grown in BG-11 medium, showed no significant differences in growth between 3 and 35psu, with slight inhibition at 0psu (Figure 3). The ecological role of nodularin in cyanobacterium Nodularia spumigena is still largely unknown, as are the conditions that promote toxin production. We report a modulating effect of mesozooplankton 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 The effects of changes in diurnal light patterns, salinity, and phosphorus on nitrogen fixation (as measured by acetylene reduction) by Nodularia spumigena Mertens were examined.
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blev katthårsalgen, Nodularia spumigena vanligare. Katthårsalgen har heterocyster, speciella celler där cyanobakterien kan fixera kväve från
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.