Reproductive toxicity of dietary zinc to Daphnia magna

Schamphelaere, Karel A.C. De; Canli, Mustafa; Lierde, Veerle Van; Forrez, Ilse; Vanhaecke, Frank; Janssen, Colin R.

doi:10.1016/j.aquatox.2004.09.008

Cited by 140 publications

(91 citation statements)

References 33 publications

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“…Instead, a changed accumulation of nZnO in specific target tissues or cells may have affected metabolic processes (De Schamphelaere et al., 2004). The decreased RNA:DNA ratio under nZnO exposure at 24°C suggesting a lower metabolic activity may have contributed to the observed life‐history shifts under higher temperatures, resulting in a lower intrinsic growth rate.…”

Section: Discussionmentioning

confidence: 99%

Thermal evolution offsets the elevated toxicity of a contaminant under warming: A resurrection study in Daphnia magna

Zhang

Jansen

Meester

et al. 2018

Evolutionary Applications

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Synergistic interactions between temperature and contaminants are a major challenge for ecological risk assessment, especially under global warming. While thermal evolution may increase the ability to deal with warming, it is unknown whether it may also affect the ability to deal with the many contaminants that are more toxic at higher temperatures. We investigated how evolution of genetic adaptation to warming affected the interactions between warming and a novel stressor: zinc oxide nanoparticles (nZnO) in a natural population of Daphnia magna using resurrection ecology. We hatched resting eggs from two D. magna subpopulations (old: 1955–1965, recent: 1995–2005) from the sediment of a lake that experienced an increase in average temperature and in recurrence of heat waves but was never exposed to industrial waste. In the old “ancestral” subpopulation, exposure to a sublethal concentration of nZnO decreased the intrinsic growth rate, metabolic activity, and energy reserves at 24°C but not at 20°C, indicating a synergism between warming and nZnO. In contrast, these synergistic effects disappeared in the recent “derived” subpopulation that evolved a lower sensitivity to nZnO at 24°C, which indicates that thermal evolution could offset the elevated toxicity of nZnO under warming. This evolution of reduced sensitivity to nZnO under warming could not be explained by changes in the total internal zinc accumulation but was partially associated with the evolution of the expression of a key metal detoxification gene under warming. Our results suggest that the increased sensitivity to the sublethal concentration of nZnO under the predicted 4°C warming by the end of this century may be counteracted by thermal evolution in this D. magna population. Our results illustrate the importance of evolution to warming in shaping the responses to another anthropogenic stressor, here a contaminant. More general, genetic adaptation to an environmental stressor may ensure that synergistic effects between contaminants and this environmental stressor will not be present anymore.

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Section: Discussionmentioning

confidence: 99%

Thermal evolution offsets the elevated toxicity of a contaminant under warming: A resurrection study in Daphnia magna

Zhang

Jansen

Meester

et al. 2018

Evolutionary Applications

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“…Metals accumulated from the dissolved phase were likely deposited on the gills and external tissues. In contrast, dietborne accumulation may cause targeted inhibition of internal organs such as vitellogenesis [26]. Thus, the different mechanisms underlying waterborne and dietborne AgNO 3 toxicity should be considered in the establishment of Ag environmental criteria for surface waters.…”

Section: Chronic Toxicitymentioning

confidence: 98%

Comparison of acute and chronic toxicity of silver nanoparticles and silver nitrate to Daphnia magna

Zhao

Wang

2011

Enviro Toxic and Chemistry

214

135

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Silver nanoparticles (AgNP) are now widely used as antibacterial products, and their potential toxicities in aquatic organisms are a matter of increasing concern. In the present study, we conducted experiments to reveal the acute and chronic toxicities of AgNP and its bioaccumulation from both aqueous and dietary sources in a model freshwater cladoceran, Daphnia magna. No mortality was observed in 48-h acute toxicity testing when the daphnids were exposed up to 500 µg Ag/L as AgNP. The AgNP accumulation reached as high as 22.9 mg Ag/g dry weight at the highest AgNP concentration tested (500 µg/L). In contrast, D. magna was extremely sensitive to free Ag ion (Ag(+) , added as AgNO(3) ), with a measured 48-h 50% lethal concentration of 2.51 µg/L. Thus, any AgNP potential acute toxicity may be caused by the release of Ag(+) into the solution. During the 21-d chronic exposure, dietborne AgNO(3) had the most significant influence on reproduction, whereas waterborne AgNP had the most significant inhibition on growth. Significant delay and decrease of reproduction in daphnids exposed to dietborne AgNO(3) occurred at a dissolved Ag concentration of 0.1 µg/L added to the algae. Significant inhibitions of growth and reproduction were also found for the AgNP exposure, with the lowest observed effective concentration of 5 µg/L and 50 µg/L, respectively. Chronic effects of AgNP were probably caused by the low food quality of algae associated with AgNP and the low depuration of ingested AgNP. Environmental risk assessments of AgNP should therefore include tests on the chronic toxicity to aquatic organisms as well as the direct and indirect effects of AgNP resulting from the release of Ag(+) into the environment.

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“…On the other hand, acute toxicity testing using daphnids, (e.g., Daphnia magna), is a common bioassay used internationally for screening toxicity of chemicals and monitoring of effluents and contaminated waters (Persoone et al, 2009). D. magna has been recommended as a standard test organism by many international organizations (e.g., ISO, 1996 andOECD, 2004) and has ISSN 2157-6076 2015 www.macrothink.org/jbls 230 been used routinely in toxicological studies (Biesinger and Christensen, 1972;Hermens et al, 1984;De Schamphelaere et al, 2004). Hence, it is important to include both V. fischeri and D. magna in a battery of tests designed for protecting the aquatic ecosystems.…”

Section: Discussionmentioning

confidence: 99%

Toxicity of Some Pesticides, Heavy Metals and Their Mixtures to Vibrio fischeri Bacteria and Daphnia magna: Comparative Study

Mansour

Abdel-Hamid²,

Ibrahim³

et al. 2015

JBLS

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The present study was conducted to evaluate the sensitivity of the Vibrio fischeri bioluminescence inhibition test (Microtox ® assay), and the standard acute Daphnia magna test; using 3 heavy metals, 3 organic pesticides, and their mixtures. In Daphnia tests, either at 24h or 30 min exposure times, the pattern of toxicity order for heavy metals was Cu ˃ Cd ˃ Pb. Chlorpyrifos-methyl was the highest toxic at 24h, while Triazophos was the highest toxic at 30 min exposure times.

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Reproductive toxicity of dietary zinc to Daphnia magna

Cited by 140 publications

References 33 publications

Thermal evolution offsets the elevated toxicity of a contaminant under warming: A resurrection study in Daphnia magna

Thermal evolution offsets the elevated toxicity of a contaminant under warming: A resurrection study in Daphnia magna

Comparison of acute and chronic toxicity of silver nanoparticles and silver nitrate to Daphnia magna

Toxicity of Some Pesticides, Heavy Metals and Their Mixtures to Vibrio fischeri Bacteria and Daphnia magna: Comparative Study

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