Assessing microplastic as a vector for chemical entry into fish larvae using a novel tube-feeding approach.

Autor: Norland S; Department of Biological Sciences, University of Bergen, NO-5020 Bergen, Norway. Electronic address: Sissel.Norland@uib.no., Vorkamp K; Aarhus University, Department of Environmental Science, Roskilde, Denmark. Electronic address: kvo@envs.au.dk., Bogevik AS; Nofima AS, Fyllingsdalen, Norway. Electronic address: Andre.Bogevik@nofima.no., Koelmans AA; Aquatic Ecology and Water Quality Management Group, Wageningen University & Research, Wageningen, the Netherlands. Electronic address: Bart.Koelmans@wur.nl., Diepens NJ; Aquatic Ecology and Water Quality Management Group, Wageningen University & Research, Wageningen, the Netherlands. Electronic address: Noel.Diepens@wur.nl., Burgerhout E; Nofima AS, Tromsø, Norway. Electronic address: Erik.Burgerhout@nofima.no., Hansen ØJ; Nofima AS, Tromsø, Norway. Electronic address: Oyvind.j.hansen@nofima.no., Puvanendran V; Nofima AS, Tromsø, Norway. Electronic address: Velmurugu.Puvanendran@nofima.no., Rønnestad I; Department of Biological Sciences, University of Bergen, NO-5020 Bergen, Norway. Electronic address: Ivar.Ronnestad@uib.no.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2021 Feb; Vol. 265, pp. 129144. Date of Electronic Publication: 2020 Nov 30.
DOI: 10.1016/j.chemosphere.2020.129144
Abstrakt: A tube-feeding model for administering microplastic (MP, Ø = 30 μm) spheres to fish larvae was employed to quantify the uptake of hydrophobic organic contaminants (HOCs) into the larval body through a single administration of MP. Polychlorinated biphenyl-153 (PCB-153) was used as a representative HOC that can be sorbed to MP in the sea. Atlantic herring (Clupea harengus) larvae (34-51 days post-hatching) were selected as the animal model. The herring larvae were tube-fed a single load of up to 200 polystyrene or polyethylene MP spheres spiked with 14 C-labelled PCB-153, and the control larvae were tube-fed an isotonic solution without MP. At the time of sampling (24 h post feeding), some larvae had evacuated all MP spheres from the gut, while others still had MP remaining in the gut. In larvae with a significant number of MP spheres still present in the gut, whole-body scintillation counting (including the MP in the gut lumen) showed elevated levels of the tracer compared to those in the control fish larvae. For larvae in which all or almost all MP had been evacuated by the time of sampling, the tracer levels of the whole body were not significantly different compared to those for the control fish larvae. These data indicate that there was no significant transfer of PCB-153 from contaminated MP into fish larvae within a gut-transit time of <24 h. This study suggests that the vector role of MP in HOC uptake and absorption may be minor compared to that of other HOC uptake pathways.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2020 The Author(s). Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE