Harmful effects of cocaine byproduct in the reproduction of sea urchin in different ocean acidification scenarios

Autor(es)

Souza, Lorena da Silva ^[1] ; Pusceddu, Fabio Hermes ^[2] ; Cortez, Fernando Sanzi ^[2] ; de Orte, Manoela Romano ^[3] ; Seabra, Alessandra Aloise ^[2] ; Cesar, Augusto ^{[2, 3]} ; Ribeiro, Daniel Araki ^[3] ; Del Valls Casillas, Tomas Angel ^[2] ; Seabra Pereira, Camilo Dias ^{[2, 3]}

Afiliação do(s) autor(es)

^[1] Univ Cadiz, Fac Marine & Environm Sci, UNESCO UNITWIN WiCop, Dept Physicochem, Aquat Syst Res Grp, Cadiz - Spain

^[2] Santa Cecilia Univ UNISANTA, Dept Ecotoxicol, Sao Paulo - Brazil

^[3] Fed Univ Sao Paulo UNIFESP, Dept Marine Sci, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Chemosphere; v. 236, DEC 2019.
• Citações Web of Science: 0

Resumo

This study has as main objective assessing the toxicity of crack-cocaine combined with different scenarios of ocean acidification on fertilization rate and embryo-larval development of Echinometra lucunter sea urchin. Effects on early life stages were assessed at five different concentrations (6,25 mg.L-1; 12,5 mg.L-1; 25 mg.L-1; 50 mg.L-1 and 100 mg.L-1) of crack-cocaine at four different pH values (8.5; 8.0; 7.5; 7.0). The pH values were achieved using two different methodologies: adding hydrochloric acid (HCI) and injecting carbon dioxide (CO2). The fertilization test did not show significant differences (p <= 0.05) compared with control sample at pH values 8.5; 8.0 and 7.5. Results of embryo-larval assays showed a half maximal effective concentration (EC50) of crack-cocaine at pH values tested (8.5, 8.0, 7.5) as 58.83, 10.67 and 11.58 mg/L-1 for HCl acidification and 58.83, 23.28 and 12.57 mg/L-1 for CO2 enrichment. At pH 7.0 the effects observed in fertilization rate and embryo development were associated with the acidification. This study is the first ecotoxicological assessment of illicit drug toxicity in aquatic ecosystems at different ocean acidification scenarios. (C) 2019 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 18/18456-4 - AVALIAÇÃO DA TOXICIDADE DO CRACK A ORGANISMOS MARINHOS EXPOSTOS A DIFERENTES CENÁRIOS DE ACIDIFICAÇÃO POR ENRIQUECIMENTO DE CO2 (CO2caineTOX).
• Beneficiário: Tomas Angel Del Valls Casillas
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 14/22273-1 - Avaliação da biodisponibilidade de contaminantes em sedimentos marinhos associados a vazamentos de co2
• Beneficiário: Manoela Romanó de Orte
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 15/17329-0 - Estudo ecotoxicológico e avaliação do risco ambiental de drogas ilícitas em ecossistemas marinhos
• Beneficiário: Camilo Dias Seabra Pereira
• Modalidade de apoio: Auxílio à Pesquisa - Regular