In vivo biomodification of lipid-coated carbon nanotubes by Daphnia magna

Aaron P. Roberts, Andrew S. Mount, Brandon Seda, Justin Souther, Rui Qiao, Sijie Lin, Chun Ke Pu, Apparao M. Rao, Stephen J. Klaine

Research output: Contribution to journalArticleResearchpeer-review

290 Citations (Scopus)


This study examined the interactions between Daphnia magna and a water-soluble, lysophophatidylcholine coated single-walled carbon nanotube. D. magna were able to ingest the nanotubes through normal feeding behavior and utilize the lysophophatidylcholine coating as a food source. D. magna were able to modify the solubility of the nanotube, likely through digestion of the lipid coating. This study provides evidence of biomodification of a carbon-based nanomaterial by an aquatic organism. The modification significantly altered the physical properties of the nanomaterial in freshwater. Acute toxicity was observed only in the highest test concentrations. These are important findings related to determining the behavior and potential toxicity of coated nanomaterials released into the environment.

Original languageEnglish
Pages (from-to)3028-3029
Number of pages2
JournalEnvironmental Science and Technology
Issue number8
Publication statusPublished - 15 Apr 2007
Externally publishedYes

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