Microplastic ingestion in key fish species of food webs in the Southwest Atlantic (Marine Protected Area Namuncurá / Burdwood Bank).

Autor: Ojeda M; Laboratorio de Invertebrados Marinos, CCNAA, Universidad Maimónides - CONICET, Ciudad Autónoma de Buenos Aires, Hidalgo 775 (1405), Ciudad Autónoma de Buenos Aires, Argentina. Electronic address: marieloje@gmail.com., Rimondino GN; Instituto de Investigaciones en Fisicoquímica de Córdoba, INFIQC - CONICET, Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba, Argentina., Fraysse CP; Laboratorio de Ecología, Fisiología y Evolución de Organismos Acuáticos, CADIC - CONICET, Ushuaia, Argentina., Cossi PF; Laboratorio de Invertebrados Marinos, CCNAA, Universidad Maimónides - CONICET, Ciudad Autónoma de Buenos Aires, Hidalgo 775 (1405), Ciudad Autónoma de Buenos Aires, Argentina., Boy CC; Laboratorio de Ecología, Fisiología y Evolución de Organismos Acuáticos, CADIC - CONICET, Ushuaia, Argentina., Pérez AF; Laboratorio de Invertebrados Marinos, CCNAA, Universidad Maimónides - CONICET, Ciudad Autónoma de Buenos Aires, Hidalgo 775 (1405), Ciudad Autónoma de Buenos Aires, Argentina.
Jazyk: angličtina
Zdroj: Aquatic toxicology (Amsterdam, Netherlands) [Aquat Toxicol] 2024 Feb; Vol. 267, pp. 106827. Date of Electronic Publication: 2023 Dec 28.
DOI: 10.1016/j.aquatox.2023.106827
Abstrakt: Microplastics (MPs) are currently one of the main problems of marine pollution, being found in all environmental matrices. Due to their size, they can be ingested by organisms directly (from the environment) or indirectly (with their prey). The objective of this study was to analyze the occurrence, abundance, concentration, and chemical nature of MPs present in the gastrointestinal tract of two fish species, Patagonotothen guntheri and Patagonotothen ramsayi, both of which are key in the food web of the Marine Protected Area Namuncurá/ Banco Burdwood (MPA N/BB). The analyzed species presented high values of MPs per individual (MPs/ind.) and occurrence compared to other studies. P. guntheri tended to have a lower number of MPs/ind. and occurrence than P. ramsayi (P. guntheri: 2.50 ± 1.93 MPs/ind., 82.50  %; P. ramsayi: 3.93 ± 2.91 MPs/ind., 90.60  %). While fibers were the predominant MPs in both species, P. ramsayi had a greater number of fragments and a greater variety of MPs chemical composition than P. guntheri. The prevailing chemical composition was cellulosic material (cellulose and cellulose mixed with polyamide and polyester). Synthetic fibers and fragments such as polyester (PET), alkyd resin, polyurethane, polyethylene, polyacrylic fiber and poly(ethylene-co-vinyl acetate-co-vinyl chloride) were also found. Although both species have a generalist diet, the differences found may be due to the fact that P. guntheri has benthopelagic feeding habits while P. ramsayi has demersal-benthic. Our study is the first report on the presence and characterization of MPs in organisms relevant to food webs in the Southwest Atlantic.
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 © 2023. Published by Elsevier B.V.)
Databáze: MEDLINE
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