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Responses of Hyalella azteca to acute and chronic microplastic exposures
Environmental toxicology and chemistry, 2015-11, Vol.34 (11), p.2564-2572
Au, Sarah Y.
Bruce, Terri F.
Bridges, William C.
Klaine, Stephen J.
2015
Details
Autor(en) / Beteiligte
Au, Sarah Y.
Bruce, Terri F.
Bridges, William C.
Klaine, Stephen J.
Titel
Responses of Hyalella azteca to acute and chronic microplastic exposures
Ist Teil von
Environmental toxicology and chemistry, 2015-11, Vol.34 (11), p.2564-2572
Ort / Verlag
United States: Blackwell Publishing Ltd
Erscheinungsjahr
2015
Link zum Volltext
Quelle
Wiley-Blackwell Journals
Beschreibungen/Notizen
Limited information is available on the presence of microplastics in freshwater systems, and even less is known about the toxicological implications of the exposure of aquatic organisms to plastic particles. The present study was conducted to evaluate the effects of microplastic ingestion on the freshwater amphipod, Hyalella azteca. Hyalella azteca was exposed to fluorescent polyethylene microplastic particles and polypropylene microplastic fibers in individual 250‐mL chambers to determine 10‐d mortality. In acute bioassays, polypropylene microplastic fibers were significantly more toxic than polyethylene microplastic particles; 10‐d lethal concentration 50% values for polyethylene microplastic particles and polypropylene microplastic fibers were 4.64 × 104 microplastics/mL and 71.43 microplastics/mL, respectively. A 42‐d chronic bioassay using polyethylene microplastic particles was conducted to quantify effects on reproduction, growth, and egestion. Chronic exposure to polyethylene microplastic particles significantly decreased growth and reproduction at the low and intermediate exposure concentrations. During acute exposures to polyethylene microplastic particles, the egestion times did not significantly differ from the egestion of normal food materials in the control; egestion times for polypropylene microplastic fibers were significantly slower than the egestion of food materials in the control. Amphipods exposed to polypropylene microplastic fibers also had significantly less growth. The greater toxicity of microplastic fibers than microplastic particles corresponded with longer residence times for the fibers in the gut. The difference in residence time might have affected the ability to process food, resulting in an energetic effect reflected in sublethal endpoints. Environ Toxicol Chem 2015;34:2564–2572. © 2015 SETAC
Sprache
Englisch
Identifikatoren
ISSN: 0730-7268
eISSN: 1552-8618
DOI: 10.1002/etc.3093
Titel-ID: cdi_proquest_miscellaneous_1732815636
Format
–
Schlagworte
Amphipoda - drug effects
,
Amphipoda - physiology
,
Animals
,
Aquatic life
,
Benthic macroinvertebrates
,
Bioassays
,
Crustaceans
,
Freshwater ecology
,
Freshwater toxicology
,
Hyalella azteca
,
Microplastics
,
Plastics - chemistry
,
Plastics - metabolism
,
Plastics - toxicity
,
Polypropylenes - chemistry
,
Reproduction - drug effects
,
Toxicity Tests, Acute
,
Toxicity Tests, Chronic
,
Toxicology
,
Water Pollutants, Chemical - chemistry
,
Water Pollutants, Chemical - metabolism
,
Water Pollutants, Chemical - toxicity
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