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Differential toxicity of carbon nanomaterials in fruit flies

According to a new study carried out on Drosophila melanogaster fruit flies and published in Environmental Science & Technology :

– Larval fruit flies showed no physical or reproductive effects from consuming carbon nanoparticles (fullerene C60, carbon black, or single-walled or multiwalled nanotubes) in their food, “despite evidence that the nanomaterials are taken up and become sequestered in tissue

– Carbon black and single-walled nanotubes in dry form “adhered extensively to fly surfaces, overwhelmed natural grooming mechanisms, and led to impaired locomotor function and mortality” of exposed adult flies within a few hours

– Fullerene and multi-walled nanotubes in dry form “adhered weakly, could be removed by grooming, and did not reduce locomotor function or survivorship” of adult flies.

The authors conclude “that these differences are primarily due to differences in nanomaterial superstructure, or aggregation state, and that the combination of adhesion and grooming can lead to active fly borne nanoparticle transport.”

[[[ Additional links suggested by Nanocolors :

# Carbon nanoparticles toxic to adult fruit flies but benign to young

# Nanoparticles & ecotoxicity in biomedical publications since 2000 ]]]


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