Chronic microfiber exposure in adult Japanese medaka (Oryzias latipes).

dc.contributor.author

Hu, Lingling

dc.contributor.author

Chernick, Melissa

dc.contributor.author

Lewis, Anna M

dc.contributor.author

Ferguson, P Lee

dc.contributor.author

Hinton, David E

dc.contributor.editor

Corriero, Aldo

dc.date.accessioned

2021-03-09T23:17:39Z

dc.date.available

2021-03-09T23:17:39Z

dc.date.issued

2020-01

dc.date.updated

2021-03-09T23:17:36Z

dc.description.abstract

Microplastic fibers (MFs) pollute aquatic habitats globally via sewage release, stormwater runoff, or atmospheric deposition. Of the synthetic MFs, polyester (PES) and polypropylene (PP) are the most common. Field studies show that fish ingest large quantities of MFs. However, few laboratory studies have addressed host responses, particularly at the organ and tissue levels. Adult Japanese medaka (Oryzias latipes), a laboratory model fish, were exposed to aqueous concentrations of PES or PP MFs (10,000 MFs/L) for 21 days. Medaka egested 1,367 ± 819 PES MFs (0.1 ± 0.04 mg) and 157 ± 105 PP MFs (1.4 ± 0.06 mg) per 24 hrs, with PP egestion increasing over time. Exposure did not result in changes in body condition, gonadosomatic- or hepatosomatic indices. PES exposure resulted in no reproductive changes, but females exposed to PP MFs produced more eggs over time. MF exposure did not affect embryonic mortality, development, or hatching. Scanning electron microscopy (SEM) of gills revealed denuding of epithelium on arches, fusion of primary lamellae, and increased mucus. Histologic sections revealed aneurysms in secondary lamellae, epithelial lifting, and swellings of inner opercular membrane that altered morphology of rostral most gill lamellae. SEM and histochemical analyses showed increased mucous cells and secretions on epithelium of foregut; however, overt abrasions with sloughing of cells were absent. For these reasons, increased focus at the tissue and cell levels proved necessary to appreciate toxicity associated with MFs.

dc.identifier

PONE-D-19-29596

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1932-6203

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1932-6203

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https://hdl.handle.net/10161/22432

dc.language

eng

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Public Library of Science (PLoS)

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PloS one

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10.1371/journal.pone.0229962

dc.subject

Animals

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Oryzias

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Polypropylenes

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Polyesters

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Water Pollutants, Chemical

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Reproduction

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Female

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Male

dc.title

Chronic microfiber exposure in adult Japanese medaka (Oryzias latipes).

dc.type

Journal article

duke.contributor.orcid

Chernick, Melissa|0000-0001-7232-036X

duke.contributor.orcid

Ferguson, P Lee|0000-0002-8367-7521

pubs.begin-page

e0229962

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3

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Staff

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Duke

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Pratt School of Engineering

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Civil and Environmental Engineering

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Environmental Sciences and Policy

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Nicholas School of the Environment

pubs.publication-status

Published

pubs.volume

15

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