Ingested Microplastics Can Act as Microbial Vectors of Ichthyofauna

Author:

Jawdhari Abdulhusein123ORCID,Deák György2ORCID,Mihăilescu Dan Florin1,Crăciun Nicolai24,Staicu Andrea Cristina4,Stanca Ioana56ORCID,Cozorici Derniza67,Fendrihan Sergiu26ORCID,Pop Cristian-Emilian126ORCID,Mernea Maria1

Affiliation:

1. Department of Anatomy, Animal Physiology and Biophysics, Faculty of Biology, University of Bucharest, 91–95 Splaiul Independenței Str., 050095 Bucharest, Romania

2. National Institute for Research and Development in Environmental Protection, 294 Splaiul Independenței Str., 060031 Bucharest, Romania

3. Department of Animal Production Techniques, Almussib Technical Instated, Al-Furat Al-Awsat Technical University, Babylon-Najaf Street, Najaf 54003, Iraq

4. Zoology Section, Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 91–95 Splaiul Independenței Str., 050095 Bucharest, Romania

5. Department of Marine Biology, Faculty of Science and Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands

6. Non-Governmental Research Organization Biologic, 14 Schitului Str., 032044 Bucharest, Romania

7. Advanced Polymer Materials Group, National University of Science and Technology Politehnica Bucharest, 1–7 Gh. Polizu Street, 011061 Bucharest, Romania

Abstract

Microplastics (plastic particles < 5 mm) are ubiquitous pollutants that have the ability to carry microbiota, including pathogens. Microbial adhesion is usually a sign of pathogenicity; thus, we investigated the adherent microbiota found on 4 mm nylon strips, which were ingested and excreted by wild fish specimens. Retention times were recorded and the polymer analysis of the excreted samples was performed, which showed no signs of degradation, nor did their controls, represented by the nylon strips submerged in the same water tanks. Both the ingested samples and controls presented pathogens in large quantities. Following Matrix-Assisted Laser Desorption/Ionization Time-Of-Flight identification, the dominant genus was represented by Aeromonas, revealing the fact that nylon microplastics can serve as undegradable physical carriers for this pathogen, among others, in the aquatic environment.

Funder

Non-Governmental Research Organization Biologic

Publisher

MDPI AG

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