دورية أكاديمية
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Ingestion of microplastics by meiobenthic communities in small-scale microcosm experiments.

التفاصيل البيبلوغرافية
العنوان: Ingestion of microplastics by meiobenthic communities in small-scale microcosm experiments.
المؤلفون: Fueser H; Bielefeld University, Animal Ecology, Konsequenz 45, 33615 Bielefeld, Germany. Electronic address: h.fueser@uni-bielefeld.de., Mueller MT; Bielefeld University, Animal Ecology, Konsequenz 45, 33615 Bielefeld, Germany., Traunspurger W; Bielefeld University, Animal Ecology, Konsequenz 45, 33615 Bielefeld, Germany.
المصدر: The Science of the total environment [Sci Total Environ] 2020 Dec 01; Vol. 746, pp. 141276. Date of Electronic Publication: 2020 Jul 28.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Elsevier Country of Publication: Netherlands NLM ID: 0330500 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-1026 (Electronic) Linking ISSN: 00489697 NLM ISO Abbreviation: Sci Total Environ Subsets: MEDLINE
أسماء مطبوعة: Original Publication: Amsterdam, Elsevier.
مواضيع طبية MeSH: Copepoda*, Water Pollutants, Chemical/*analysis , Water Pollutants, Chemical/*toxicity, Animals ; Microplastics ; Plastics/toxicity ; Polystyrenes/analysis
مستخلص: Microplastics have been detected in many different environments. Nematodes are a rife meiofaunal taxon and occupy an important trophic position in benthic food webs. Laboratory-based ingestion experiments have demonstrated the susceptibility of single nematode species to microplastic uptake. However, the determinants of ingestion by meiofaunal assemblages, especially those of nematodes, have yet to be fully examined. We therefore conducted a microcosm study in which field-collected freshwater sediment was spiked with fluorescent polystyrene (PS) beads (1.0, 3.0 and 6.0 μm) in concentrations of 10 3 and 10 7 PS beads ml -1 and the ingestion by the most dominant indigenous meiofaunal taxa (nematodes, rotifers, chironomids, copepods) was investigated after 2, 4 and 8 days using fluorescence microscopy. In additional small-scale microcosms, PS bead ingestion by nematode assemblages was quantified as a function of feeding type, exposure time (1-10 days), concentration (10 3 , 10 5 , 10 7 PS beads ml -1 ) and bead size (0.5, 1.0, 3.0, 6.0 μm). PS beads at 10 7 beads ml -1 were largely ingested by chironomids and copepods. Exposure time and concentration correlated positively with PS bead ingestion for all taxa. The most relevant size class for ingestion for the majority of meiofaunal taxa was PS beads of 1.0 μm. Nematode communities, especially deposit-feeding species, effectively ingested micropastics from sediment, as >30% of the exposed individuals and 56% of the species ingested 1.0-μm PS beads in <24 h. Ingestion rates were mainly influenced by PS bead size and nematode feeding type/habit, with the exception of a bead concentration of 10 3 beads ml -1 , at which exposure time was also an important factor. Sediment particles reduced microplastic ingestion considerably for all investigated meiobenthic organisms. Our study demonstrates the ability of free-living nematodes communities to readily ingest PS beads of various sizes. If the feeding-type distribution is known, the potential exposure of nematode communities may be predicted.
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 Elsevier B.V. All rights reserved.)
فهرسة مساهمة: Keywords: Chironomid; Copepod; Nematode; Polystyrene bead; Rotifer; Sediment
المشرفين على المادة: 0 (Microplastics)
0 (Plastics)
0 (Polystyrenes)
0 (Water Pollutants, Chemical)
تواريخ الأحداث: Date Created: 20200809 Date Completed: 20201007 Latest Revision: 20201007
رمز التحديث: 20240628
DOI: 10.1016/j.scitotenv.2020.141276
PMID: 32763610
قاعدة البيانات: MEDLINE
الوصف
تدمد:1879-1026
DOI:10.1016/j.scitotenv.2020.141276