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Microplastics in the insular marine environment of the Southwest Indian Ocean carry a microbiome including antimicrobial resistant (AMR) bacteria: A case study from Reunion Island

Marine pollution bulletin, 2023-12, Vol.198 [Peer Reviewed Journal]

Distributed under a Creative Commons Attribution 4.0 International License ;ISSN: 0025-326X ;EISSN: 1879-3363 ;DOI: 10.1016/j.marpolbul.2023.115911

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  • Title:
    Microplastics in the insular marine environment of the Southwest Indian Ocean carry a microbiome including antimicrobial resistant (AMR) bacteria: A case study from Reunion Island
  • Author: Sababadichetty, Loik ; Miltgen, Guillaume ; Vincent, Bryan ; Guilhaumon, François ; Thibault, Margot ; Bureau, Sophie ; Tortosa, Pablo ; Bouvier, Thierry ; Jourand, Philippe ; Lenoble, Véronique
  • Subjects: Environmental Sciences
  • Is Part Of: Marine pollution bulletin, 2023-12, Vol.198
  • Description: The increasing threats to ecosystems and humans from marine plastic pollution require a comprehensive assessment. We present a plastisphere case study from Reunion Island, a remote oceanic island located in the Southwest Indian Ocean, polluted by plastics. We characterized the plastic pollution on the island's coastal waters, described the associated microbiome, explored viable bacterial flora and the presence of antimicrobial resistant (AMR) bacteria. Reunion Island faces plastic pollution with up to 10,000 items/km 2 in coastal water. These plastics host microbiomes dominated by Proteobacteria (80 %), including dominant genera such as Psychrobacter, Photobacterium, Pseudoalteromonas and Vibrio. Culturable microbiomes reach 10 7 CFU/g of microplastics, with dominance of Exiguobacterium and Pseudomonas. Plastics also carry AMR bacteria including β-lactam resistance. Thus, Southwest Indian Ocean islands are facing serious plastic pollution. This pollution requires vigilant monitoring as it harbors a plastisphere including AMR, that threatens pristine ecosystems and potentially human health through the marine food chain.
  • Publisher: Elsevier
  • Language: English
  • Identifier: ISSN: 0025-326X
    EISSN: 1879-3363
    DOI: 10.1016/j.marpolbul.2023.115911
  • Source: Hyper Article en Ligne (HAL) (Open Access)
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