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BIBTEX RIS

Interactive effects of microplastics and benzo[a]pyrene on two species of marine invertebrates

2023; Elsevier BV; Volume: 193; Linguagem: Inglês

10.1016/j.marpolbul.2023.115170

1879-3363

Tawany de Mello Souza, Rodrigo Brasil Choueri, Caio Rodrigues Nobre, Denis Moledo de Souza Abessa, Beatriz Barbosa Moreno, José Hérelis Carnaúba, G.M. Izar, Ana Cecília Rizzatti de Albergaria‐Barbosa, Fábio Ruiz Simões, Paloma Kachel Gusso‐Choueri,

Effects and risks of endocrine disrupting chemicals

This study aimed to evaluate B[a]P and low-density polyethylene microplastics (MPs) toxicty, alone and in mixture (0.03 to 30 μg L-1 of B[a]P; and 5, 50 and 500 mg L-1 for MPs). Five mg L-1 of MPs is considerably higher than commonly reported environmental concentrations, although it has been reported for marine environments. Individual (sea urchin embryo-larval development and mortality of mysids) and sub-individual responses (LPO and DNA damage in mysids) were assessed. The toxicity increased as the B[a]P concentration increased, and microplastics alone did not cause toxicity. B[a]P toxicity was not modified by the lowest concentration of MPs (5 mg L-1), but at higher MPs concentrations (50 and 500 mg L-1), the effects of B[a]P on sea urchin development and in biomarkers in mysids were diminished. Microplastics interacted with B[a]P in seawater, reducing its toxicity, probably due to adsorption of B[a]P to the surface of microplastics.