Mortality of dogs associated with a bloom of the cyanobacterium<i>Nodularia spumigena</i>in the Baltic Sea

Edler, Lars; Fernö, Stina; Lind, Magnus G.; Lundberg, Rudolf; Nilsson, Per Olle

doi:10.1080/00785236.1985.10426623

Cited by 87 publications

(51 citation statements)

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“…The toxin called nodularin (NOD) accumulates in Baltic fish, mussels and waterfowl (Sipiä et al, 2001;Karlsson et al, 2005;Kankaanpää et al, 2005;Kankaanpää et al, 2007). In the past, several cases of poisoning of terrestrial and aquatic animals following contact with N. spumigena were recorded (Francis, 1878;Edler et al, 1985;Nehring, 1993).…”

Section: Introductionmentioning

confidence: 99%

Occurrence of cyanobacteria and cyanotoxin in the Southern Baltic Proper. Filamentous cyanobacteria versus single-celled picocyanobacteria

et al. 2012

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In the Baltic Sea, cyanobacterial community is mainly composed of filamentous nitrogen-fixing forms, including the toxic Nodularia spumigena, and single-celled picocyanobacteria (Pcy), represented by Synechococcus spp. The main aim of the work was to test the hypothesis that the picocyanobacteria dependend on the presence of the nitrogen-fixing cyanobacteria. In addition, the contamination of blue mussels and fish with nodularin (NOD), the N. spumigena toxin, was examined. In years 2008-2011, the samples for the study were collected in the Southern Baltic Proper using FerryBox system and, occasionally, during research cruises. The analyses showed no correlation between the growth of the nitrogen-fixing cyanobacteria and Synechococcus. Compared with the previously published data, a shift in the composition of Pcy phenotypes was observed. This shift might be an indication of the proceeding changes induced by the reduced nutrient loading and/or climate change. Analyses of NOD revealed differences in the cyanotoxin concentrations between mussels of different shell size. The highest concentration of NOD was detected in the liver of round goby. However, temporarily, also the fish muscles were significantly contaminated with the toxin.

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Section: Introductionmentioning

confidence: 99%

Occurrence of cyanobacteria and cyanotoxin in the Southern Baltic Proper. Filamentous cyanobacteria versus single-celled picocyanobacteria

et al. 2012

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“…Especially in the Baltic Sea (39), as well as in some Australian lakes (10) and estuaries, it forms toxic mass occurrences, posing health risks to humans (17), causing animal poisonings (see, e.g., references 4,8,26, and 43), harming fisheries (14), and interfering with recreational use of waters (1).…”

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confidence: 99%

Quantitative Real-Time PCR Detection of Toxic Nodularia Cyanobacteria in the Baltic Sea

Koskenniemi

Lyra

Rajaniemi-Wacklin

et al. 2007

Appl Environ Microbiol

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A specific quantitative real-time PCR (qPCR) method was developed for the quantification of hepatotoxin nodularin-producing Nodularia, one of the main bloom-forming cyanobacteria in the Baltic Sea. Specific PCR primers were designed for subunit F of the nodularin synthetase gene (ndaF), which encodes the NdaF subunit of the nodularin synthetase gene complex needed for nodularin production. The qPCR method was applied to water samples (a total of 120 samples) collected from the Baltic Sea in July 2004. As few as 30 ndaF gene copies ml ؊1 of seawater could be detected, and thus, the method was very sensitive. The ndaF gene copy numbers and nodularin concentrations were shown to correlate in the Baltic seawater, indicating the constant production of nodularin by Nodularia. This qPCR method for the ndaF gene can be used for detailed studies of Nodularia blooms and their formation. ndaF gene copies and nodularin were detected mostly in the surface water but also in deeper water layers (down to 30 m). Toxic Nodularia blooms are not only horizontally but also vertically widely distributed, and thus, the Baltic fauna is extensively exposed to nodularin.

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“…However, these organisms can also have a negative effect on the environment. For example, every year, massive blooms of N 2 -fixing cyanobacteria occur in the Baltic Sea (Kahru et al 1994), and, when they decay, they can have a damaging effect on fish stocks and an adverse effect on the recreational use of the Baltic coastal zone (Edler et al 1985;Sellner 1997). Herein we describe a detailed study made on a cyanobacterial bloom in the Baltic Sea during the summer of 1998 as part of the development of an integrated model that will enable us to predict how growth, primary productivity, N 2 fixation, and toxin production might respond to a changing environment.…”

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Maximum rates of N² fixation and primary production are out of phase in a developing cyanobacterial bloom in the Baltic Sea

Gallon

Evans

Jones

et al. 2002

Limnology & Oceanography

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Abstract-Although N 2 -fixing cyanobacteria contribute significantly to oceanic sequestration of atmospheric CO 2 , little is known about how N 2 fixation and carbon fixation (primary production) interact in natural populations of marine cyanobacteria. In a developing cyanobacterial bloom in the Baltic Sea, rates of N 2 fixation (acetylene reduction) showed both diurnal and longer-term fluctuations. The latter reflected fluctuations in the nitrogen status of the cyanobacterial population and could be correlated with variations in the ratio of acetylene reduced to 15 N 2 assimilated. The value of this ratio may provide useful information about the release of newly fixed nitrogen by a cyanobacterial population. However, although the diurnal fluctuations in N 2 fixation broadly paralleled diurnal fluctuations in carbon fixation, the longer-term fluctuations in these two processes were out of phase.

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Mortality of dogs associated with a bloom of the cyanobacteriumNodularia spumigenain the Baltic Sea

Cited by 87 publications

References 4 publications

Occurrence of cyanobacteria and cyanotoxin in the Southern Baltic Proper. Filamentous cyanobacteria versus single-celled picocyanobacteria

Occurrence of cyanobacteria and cyanotoxin in the Southern Baltic Proper. Filamentous cyanobacteria versus single-celled picocyanobacteria

Quantitative Real-Time PCR Detection of Toxic Nodularia Cyanobacteria in the Baltic Sea

Maximum rates of N² fixation and primary production are out of phase in a developing cyanobacterial bloom in the Baltic Sea

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Mortality of dogs associated with a bloom of the cyanobacteriumNodularia spumigenain the Baltic Sea

Cited by 87 publications

References 4 publications

Occurrence of cyanobacteria and cyanotoxin in the Southern Baltic Proper. Filamentous cyanobacteria versus single-celled picocyanobacteria

Occurrence of cyanobacteria and cyanotoxin in the Southern Baltic Proper. Filamentous cyanobacteria versus single-celled picocyanobacteria

Quantitative Real-Time PCR Detection of Toxic Nodularia Cyanobacteria in the Baltic Sea

Maximum rates of N2 fixation and primary production are out of phase in a developing cyanobacterial bloom in the Baltic Sea

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Maximum rates of N² fixation and primary production are out of phase in a developing cyanobacterial bloom in the Baltic Sea