Effects of decaying toxic blue-green algae on water quality - a laboratory study

Berg, Kjetil; Skulberg, Olav M.; Skulberg, Randi

doi:10.1127/archiv-hydrobiol/108/1987/549

Cited by 68 publications

(1 citation statement)

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“…PMC is typically associated with food-web contamination, while dMC is more likely to cause an issue for drinking-water resources. It has been posited that MCs remain in the particulate phase until cell death and that very little dMC will be present during a bloom [ 27 , 28 ]. However, dMC has been observed to make up greater than 25% of total MCs in multiple observational studies [ 24 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

Microcystin Concentrations, Partitioning, and Structural Composition during Active Growth and Decline: A Laboratory Study

Pierce,

Schnetzer

2023

Toxins

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Microcystin can be present in variable concentrations, phases (dissolved and particulate), and structural forms (congeners), all which impact the toxicity and persistence of the algal metabolite. Conducting incubation experiments with six bloom assemblages collected from the Chowan River, North Carolina, we assessed microcystin dynamics during active growth and biomass degradation. Upon collection, average particulate and dissolved microcystin ranged between 0.2 and 993 µg L−1 and 0.5 and 3.6 µg L−1, respectively. The presence of congeners MC-LA, -LR, -RR, and -YR was confirmed with MC-RR and MC-LR being the most prevalent. Congener composition shifted over time and varied between dissolved and particulate phases. Particulate microcystin exponentially declined in five of six incubations with an average half-life of 10.2 ± 3.7 days, while dissolved microcystin remained detectable until the end of the incubation trials (up to 100 days). Our findings suggest that concerns about food-web transfer via intracellular toxins seem most warranted within the first few weeks of the bloom peak, while dissolved toxins linger for several months in the aftermath of the event. Also, it was indicated there were differences in congener profiles linked to the sampling method. We believe this study can inform monitoring strategies and aid microcystin-exposure risk assessments for cyanobacterial blooms.

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Section: Introductionmentioning

confidence: 99%

Microcystin Concentrations, Partitioning, and Structural Composition during Active Growth and Decline: A Laboratory Study

Pierce,

Schnetzer

2023

Toxins

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Development of health alerts for cyanobacteria and related toxins in drinking water in South Australia

Fitzgerald¹,

Cunliffe²,

Burch³

1999

Environ. Toxicol.

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Seasonally Accumulation of Microcystins in the Various Tissues of an Endemic and Protected Fish Species (Rutilus panosi) with Different Sizes

Papadimitriou

Kagalou

Leonardos

2012

CLEAN Soil Air Water

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The present study was undertaken to investigate the accumulation of microcystins (MCYST) in the various tissues of an endemic and protected fish species (Rutilus panosi). We also tried to identify any differences in sensitivity and accumulation of MCYST, for various specimens of the same fish species related to body length. MCYST concentrations in lake water and fish tissues were determined by a commercial Microcystin ELISA kit. Results showed that considerable amount of toxins were found to be accumulated in tissues of R. panosi throughout the year. Among them, liver had the highest MCYST concentrations (407.97 ± 32.43 ng/g). This study confirmed the accumulation of high MCYST concentrations in fish brain (308.75 ± 26.49 ng/g). Our results suggest, that MCYST accumulation in R. panosi tissues is size depended. High MCYST concentration in the muscle of the fish increases the risk of unsafe consumption, thus threatening human health.

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Effects of decaying toxic blue-green algae on water quality - a laboratory study

Cited by 68 publications

References 0 publications

Microcystin Concentrations, Partitioning, and Structural Composition during Active Growth and Decline: A Laboratory Study

Microcystin Concentrations, Partitioning, and Structural Composition during Active Growth and Decline: A Laboratory Study

Development of health alerts for cyanobacteria and related toxins in drinking water in South Australia

Seasonally Accumulation of Microcystins in the Various Tissues of an Endemic and Protected Fish Species (Rutilus panosi) with Different Sizes

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