The toxicities of a polyunsaturated fatty acid and a microcystin to Daphnia magna

M. Reinikainen; J. A. O. Meriluoto; L. Spoof; K.-i. Harada

doi:10.1002/tox.10003

The toxicities of a polyunsaturated fatty acid and a microcystin to Daphnia magna

M. Reinikainen^*, J. A. O. Meriluoto, L. Spoof, K.-i. Harada

^*Corresponding author for this work

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Abstract

Polyunsaturated fatty acids (PUFAs) are essential components of zooplankton diets. However, studies with PUFAs from cyanobacteria indicate toxic properties. We investigated the toxicity of the PUFA γ-linolenic acid and the cyanobacterial peptide toxin microcystin-LR to Daphnia. The PUFA was acutely toxic at a concentration of 9 μg ml^-1. The effect of microcystin-LR was not statistically significant at the concentration used (3 μg ml^-1), but an additive effect with the PUFA was observed. Relative to LC₅₀-values of well-known pollutants, the PUFA was intermediately toxic. The activity equaled that of microcystin-LR, which is commonly treated as one of the most potent cyanobacterial toxins. Our results suggest that the toxic properties of PUFAs deserve more attention.

Original language	English
Pages (from-to)	444-448
Number of pages	5
Journal	Environmental Toxicology
Volume	16
Issue number	5
DOIs	https://doi.org/10.1002/tox.10003
Publication status	Published - 2001
MoE publication type	A1 Journal article-refereed

Keywords

Daphnia
Fatty acid
Harmful
Lipid
Microcystin
Phytoplankton
PUFA
Toxic
Zooplankton

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10.1002/tox.10003

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title = "The toxicities of a polyunsaturated fatty acid and a microcystin to Daphnia magna",

abstract = "Polyunsaturated fatty acids (PUFAs) are essential components of zooplankton diets. However, studies with PUFAs from cyanobacteria indicate toxic properties. We investigated the toxicity of the PUFA γ-linolenic acid and the cyanobacterial peptide toxin microcystin-LR to Daphnia. The PUFA was acutely toxic at a concentration of 9 μg ml-1. The effect of microcystin-LR was not statistically significant at the concentration used (3 μg ml-1), but an additive effect with the PUFA was observed. Relative to LC50-values of well-known pollutants, the PUFA was intermediately toxic. The activity equaled that of microcystin-LR, which is commonly treated as one of the most potent cyanobacterial toxins. Our results suggest that the toxic properties of PUFAs deserve more attention.",

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T1 - The toxicities of a polyunsaturated fatty acid and a microcystin to Daphnia magna

AU - Reinikainen, M.

AU - Meriluoto, J. A. O.

AU - Spoof, L.

AU - Harada, K.-i.

PY - 2001

Y1 - 2001

N2 - Polyunsaturated fatty acids (PUFAs) are essential components of zooplankton diets. However, studies with PUFAs from cyanobacteria indicate toxic properties. We investigated the toxicity of the PUFA γ-linolenic acid and the cyanobacterial peptide toxin microcystin-LR to Daphnia. The PUFA was acutely toxic at a concentration of 9 μg ml-1. The effect of microcystin-LR was not statistically significant at the concentration used (3 μg ml-1), but an additive effect with the PUFA was observed. Relative to LC50-values of well-known pollutants, the PUFA was intermediately toxic. The activity equaled that of microcystin-LR, which is commonly treated as one of the most potent cyanobacterial toxins. Our results suggest that the toxic properties of PUFAs deserve more attention.

AB - Polyunsaturated fatty acids (PUFAs) are essential components of zooplankton diets. However, studies with PUFAs from cyanobacteria indicate toxic properties. We investigated the toxicity of the PUFA γ-linolenic acid and the cyanobacterial peptide toxin microcystin-LR to Daphnia. The PUFA was acutely toxic at a concentration of 9 μg ml-1. The effect of microcystin-LR was not statistically significant at the concentration used (3 μg ml-1), but an additive effect with the PUFA was observed. Relative to LC50-values of well-known pollutants, the PUFA was intermediately toxic. The activity equaled that of microcystin-LR, which is commonly treated as one of the most potent cyanobacterial toxins. Our results suggest that the toxic properties of PUFAs deserve more attention.

KW - Daphnia

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KW - Microcystin

KW - Phytoplankton

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The toxicities of a polyunsaturated fatty acid and a microcystin to Daphnia magna

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