Abstract：
:Nanoparticles (NPs) are increasingly being used, and they present the risk of being introduced into food webs. Numerous studies have been conducted to evaluate the toxicological effects of NPs in the aquatic and freshwater environments and their transfer to upper-level trophic organisms. However, information on the transfer and consequent effects of NPs on soil invertebrates is still limited. In this study, we assessed the transfer of quantum dots (QDs) through a three-species terrestrial food chain that consisted of the yeast Saccharomyces cerevisiae, the collembolan Folsomia candida, and the pill bug Armadillidium vulgare, as well as their biodistribution in vital organs using fluorescence analytical techniques. To visualize QD incorporation and biodistribution in F. candida, longitudinal and transversal sections were observed after short-term (3 d) and long-term (12 d) feeding with QD-treated yeast. QDs were located only in the intestine of F. candida and excreted within 1-2 d. QDs were also transferred to the pill bug by feeding, and remained in its intestine. This study showed the transfer of NPs through a model terrestrial food chain and indicated the potential hazards of released NPs for organisms at different trophic levels.
journal_name
Chemospherejournal_title
Chemosphereauthors
Chae Y,Kim SW,An YJdoi
10.1016/j.chemosphere.2016.02.075subject
Has Abstractpub_date
2016-05-01 00:00:00pages
101-7eissn
0045-6535issn
1879-1298pii
S0045-6535(16)30235-1journal_volume
151pub_type
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