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

Author(s)

Souza, Tawany de Mello ; Choueri, Rodrigo Brasil ; Nobre, Caio Rodrigues ; Abessa, Denis Moledo de Souza ; Moreno, Beatriz Barbosa ; Carnauba, Jose Herelis ; Mendes, Gabriel Izar ; Albergaria-Barbosa, Ana Cecilia Rizzatti de ; Simoesc, Fabio Ruiz ; Gusso-Choueri, Paloma Kachel

• Document type: Journal article
• Source: Marine Pollution Bulletin; v. 193, p. 12-pg., 2023-08-01.

Abstract

This study aimed to evaluate B[a]P and low-density polyethylene microplastics (MPs) toxicty, alone and in mixture (0.03 to 30 & mu;g 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. (AU)

• FAPESP's process: 21/08041-4 - Combined and flexible screen-printed electrodes, modified with graphene and its hybrids with conducting polymers
• Grantee: Fabio Ruiz Simões
• Support Opportunities: Regular Research Grants