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Microplastics do not increase toxicity of a hydrophobic organic chemical to marine plankton.
Mar Pollut Bull. 2019 Jan; 138:58-62.MP

Abstract

Planktonic sea-urchin larvae actively ingest polyethylene microplastics (MP) that accumulate in the larval stomach and can be distinguished from natural food using polarized light microscopy. MP filtering rates were similar to those of natural particles (microalgae) of the same size range; 0.30 to 0.35 mL min-1. However, the ingestion of MP did not increase the toxicity of a hydrophobic organic chemical, the 4‑n‑nonylphenol (NP), either in microalgae-fed or starved larvae. The 48 h EC50 of NP was more than two fold higher in fed (158.8 to 190.9 μg L-1) compared to starved larvae (64.3 to 83.7 μg L-1), disregarding the presence and amount of MP, which did not significantly affect larval growth. Therefore, MP did not act as vectors of a hydrophobic chemical such as NP to these planktonic organisms. These results challenge the hypothetical role of MP as vectors of organic contaminants to marine food webs.

Authors+Show Affiliations

ECIMAT, Universidade de Vigo, Illa de Toralla, E-36331 Vigo, Galicia, Spain; Departamento de Ecoloxía e Bioloxía Animal, Universidade de Vigo, Campus Lagoas-Marcosende, E-36200 Vigo, Galicia, Spain.ECIMAT, Universidade de Vigo, Illa de Toralla, E-36331 Vigo, Galicia, Spain. Electronic address: taniatato@uvigo.es.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30660309

Citation

Beiras, Ricardo, and Tania Tato. "Microplastics Do Not Increase Toxicity of a Hydrophobic Organic Chemical to Marine Plankton." Marine Pollution Bulletin, vol. 138, 2019, pp. 58-62.
Beiras R, Tato T. Microplastics do not increase toxicity of a hydrophobic organic chemical to marine plankton. Mar Pollut Bull. 2019;138:58-62.
Beiras, R., & Tato, T. (2019). Microplastics do not increase toxicity of a hydrophobic organic chemical to marine plankton. Marine Pollution Bulletin, 138, 58-62. https://doi.org/10.1016/j.marpolbul.2018.11.029
Beiras R, Tato T. Microplastics Do Not Increase Toxicity of a Hydrophobic Organic Chemical to Marine Plankton. Mar Pollut Bull. 2019;138:58-62. PubMed PMID: 30660309.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Microplastics do not increase toxicity of a hydrophobic organic chemical to marine plankton. AU - Beiras,Ricardo, AU - Tato,Tania, Y1 - 2018/11/17/ PY - 2018/10/09/received PY - 2018/11/12/revised PY - 2018/11/13/accepted PY - 2019/1/21/entrez PY - 2019/1/21/pubmed PY - 2019/3/12/medline KW - Bioassays KW - Echinoderms KW - Embryo KW - Marine litter KW - Nonylphenol KW - Plastics SP - 58 EP - 62 JF - Marine pollution bulletin JO - Mar. Pollut. Bull. VL - 138 N2 - Planktonic sea-urchin larvae actively ingest polyethylene microplastics (MP) that accumulate in the larval stomach and can be distinguished from natural food using polarized light microscopy. MP filtering rates were similar to those of natural particles (microalgae) of the same size range; 0.30 to 0.35 mL min-1. However, the ingestion of MP did not increase the toxicity of a hydrophobic organic chemical, the 4‑n‑nonylphenol (NP), either in microalgae-fed or starved larvae. The 48 h EC50 of NP was more than two fold higher in fed (158.8 to 190.9 μg L-1) compared to starved larvae (64.3 to 83.7 μg L-1), disregarding the presence and amount of MP, which did not significantly affect larval growth. Therefore, MP did not act as vectors of a hydrophobic chemical such as NP to these planktonic organisms. These results challenge the hypothetical role of MP as vectors of organic contaminants to marine food webs. SN - 1879-3363 UR - https://www.unboundmedicine.com/medline/citation/30660309/Microplastics_do_not_increase_toxicity_of_a_hydrophobic_organic_chemical_to_marine_plankton_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0025-326X(18)30806-3 DB - PRIME DP - Unbound Medicine ER -