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dc.contributor.authorZiajahromi, Shima
dc.contributor.authorKumar, Anupama
dc.contributor.authorNeale, Peta A
dc.contributor.authorLeusch, Frederic DL
dc.date.accessioned2018-04-16T21:25:31Z
dc.date.available2018-04-16T21:25:31Z
dc.date.issued2017
dc.identifier.issn0013-936X
dc.identifier.doi10.1021/acs.est.7b03574
dc.identifier.urihttp://hdl.handle.net/10072/373194
dc.description.abstractThere is limited knowledge regarding the adverse effects of wastewater-derived microplastics, particularly fibers, on aquatic biota. In this study, we examined the acute (48 h) and chronic (8 d) effects of microplastic polyester fibers and polyethylene (PE) beads on freshwater zooplankton Ceriodaphnia dubia. We also assessed the acute response of C. dubia to a binary mixture of microplastic beads and fibers for the first time. Acute exposure to fibers and PE beads both showed a dose-dependent effect on survival. An equitoxic binary mixture of beads and fibers resulted in a toxic unit of 1.85 indicating less than additive effects. Chronic exposure to lower concentrations did not significantly affect survival of C. dubia, but a dose-dependent effect on growth and reproduction was observed. Fibers showed greater adverse effects than PE beads. While ingestion of fibers was not observed, scanning electron microscopy showed carapace and antenna deformities after exposure to fibers, with no deformities observed after exposure to PE beads. While much of the current research has focused on microplastic beads, our study shows that microplastic fibers pose a greater risk to C. dubia, with reduced reproductive output observed at concentrations within an order of magnitude of reported environmental levels.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherAmerican Chemical Society
dc.relation.ispartofpagefrom13397
dc.relation.ispartofpageto13406
dc.relation.ispartofissue22
dc.relation.ispartofjournalEnvironmental Science and Technology
dc.relation.ispartofvolume51
dc.subject.fieldofresearchEnvironmental Sciences not elsewhere classified
dc.subject.fieldofresearchcode059999
dc.titleImpact of Microplastic Beads and Fibers on Waterflea (Ceriodaphnia dubia) Survival, Growth, and Reproduction: Implications of Single and Mixture Exposures
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dc.description.versionPost-print
gro.facultyGriffith Sciences, Griffith School of Environment
gro.rights.copyrightThis document is the Accepted Manuscript version of a Published Work that appeared in final form in Environmental Science & Technology, copyright 2017 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.est.7b03574
gro.hasfulltextFull Text
gro.griffith.authorLeusch, Frederic
gro.griffith.authorZiajahromi, Shima
gro.griffith.authorNeale, Peta A.


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