Harmful effects of cocaine byproduct in the reproduction of sea urchin in different ocean acidification scenarios
| Autor: | Daniel Araki Ribeiro, Fernando Sanzi Cortez, Lorena da Silva Souza, Tomás Ángel Del Valls Casillas, Camilo Dias Seabra Pereira, Fabio Hermes Pusceddu, Alessandra Aloise de Seabra, Manoela R. de Orte, Augusto Cesar |
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| Rok vydání: | 2019 |
| Předmět: |
Environmental Engineering
Oceans and Seas Health Toxicology and Mutagenesis 0208 environmental biotechnology Embryonic Development 02 engineering and technology 010501 environmental sciences Ecotoxicology 01 natural sciences chemistry.chemical_compound Human fertilization Cocaine biology.animal Animals Environmental Chemistry Sea urchin 0105 earth and related environmental sciences EC50 biology Aquatic ecosystem Echinometra lucunter Public Health Environmental and Occupational Health Ocean acidification General Medicine General Chemistry biology.organism_classification Pollution 020801 environmental engineering chemistry Larva Sea Urchins Environmental chemistry Carbon dioxide Toxicity |
| Zdroj: | Chemosphere. 236:124284 |
| ISSN: | 0045-6535 |
| Popis: | 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 (HCl) 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. |
| Databáze: | OpenAIRE |
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