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Your search keyword '"Tato, Tania"' showing total 11 results
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11 results on '"Tato, Tania"'

1. Chemicals sorbed to environmental microplastics are toxic to early life stages of aquatic organisms

Author

Cormier, Bettie, Gambardella, Chiara, Tato, Tania, Perdriat, Quentin, Costa, Elisa, Veclin, Cloé, Le Bihanic, Florane, Grassl, Bruno, Dubocq, Florian, Kärrman, Anna, Van Arkel, Kim, Lemoine, Soazig, Lagarde, Fabienne, Morin, Bénédicte, Garaventa, Francesca, Faimali, Marco, Cousin, Xavier, Bégout, Marie-Laure, Beiras, Ricardo, and Cachot, Jérôme

Published
2021
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7. Polyethylene microplastics do not increase bioaccumuation or toxicity of nonylphenol and 4-MBC to marine zooplankton

Author

Universidade de Santiago de Compostela. Departamento de Química Analítica, Nutrición e Bromatoloxía, Universidade de Santiago de Compostela. Instituto de Investigación e Análises Alimentarias, Beiras, Ricardo, Muniategui Lorenzo, Soledad, Rodil Rodríguez, María del Rosario, Tato, Tania, Montes Goyanes, Rosa María, López-Ibáñez, Sara, Concha-Graña, Estefanía, Campoy-López, Pedro, Salgueiro-González, Noelia, Quintana Álvarez, José Benito, Universidade de Santiago de Compostela. Departamento de Química Analítica, Nutrición e Bromatoloxía, Universidade de Santiago de Compostela. Instituto de Investigación e Análises Alimentarias, Beiras, Ricardo, Muniategui Lorenzo, Soledad, Rodil Rodríguez, María del Rosario, Tato, Tania, Montes Goyanes, Rosa María, López-Ibáñez, Sara, Concha-Graña, Estefanía, Campoy-López, Pedro, Salgueiro-González, Noelia, and Quintana Álvarez, José Benito

Abstract

Global production of synthetic polymers, led by polyethylene (PE), rose steadily in the last decades, and marine ecosystems are considered as a global sink. Although PE is not biodegradable, in coastal areas it fragments into microplastics (MP) readily taken up by biota, and have been postulated as vectors of hydrophobic chemicals to marine organisms. We have tested this hypothesis using two organisms representative of the marine plankton, the holoplanktonic copepod Acartia clausi, and the meroplanktonic larva of the Paracentrotus lividus sea-urchin, and two model chemicals with similar hydrophobic properties, the 4-n-Nonylphenol and the 4-Methylbenzylidene-camphor used as plastic additive and UV filter in cosmetics. Both test species actively ingested the MP particles. However, the presence of MP never increased the bioaccumulation of neither model chemicals, nor their toxicity to the exposed organisms. Bioaccumulation was a linear function of waterborne chemical disregarding the level of MP. Toxicity, assessed by the threshold (EC10) and median (EC50) effect levels, was either independent of the level of MP or even in some instances significantly decreased in the presence of MPs. These consistent results challenge the assumption that MP act as vectors of hydrophobic chemicals to planktonic marine organisms

Published
2019

10. Ingestion and contact with polyethylene microplastics does not cause acute toxicity on marine zooplankton

Author

Beiras, Ricardo, Bellas, Juan, Cachot, Jérome, Cormier, B., Cousin, X., Engwall, M., Gambardella, C., Garaventa, F., Keiter, S., Le Bihanic, F., López-Ibáñez, S., Piazza, V., Rial, Diego, Tato, Tania, Vidal-Liñán, Leticia, Beiras, Ricardo, Bellas, Juan, Cachot, Jérome, Cormier, B., Cousin, X., Engwall, M., Gambardella, C., Garaventa, F., Keiter, S., Le Bihanic, F., López-Ibáñez, S., Piazza, V., Rial, Diego, Tato, Tania, and Vidal-Liñán, Leticia

Published
2018

11. A 2‐Tier standard method to test the toxicity of microplastics in marine water using Paracentrotus lividus and Acartia clausi larvae.

Author

Beiras, Ricardo, Tato, Tania, and López‐Ibáñez, Sara

Subjects
*PLANKTON, *SEA urchins, *COPEPODA, *AQUATIC organisms, *PLASTIC marine debris
Abstract

A 2‐tier standardized protocol was designed to test the toxicity of microplastics to planktonic organisms. This approach uses sea urchin (Paracentrotus lividus) and copepod (Acartia clausi) larvae because they are common biological models in marine research, and standard methods for toxicity testing with regulatory applications are available. In Tier I, leachates obtained at a 100 to 1 liquid to solid ratio are tested, and toxic units are calculated using a probit dose–response model to quantify the toxicity of the plastics. In Tier II, which is conducted only if significant toxicity (> 1 toxic unit) is found in Tier I, particles less than 20 μm in size are tested at concentrations between 0.1 and 10 mg L−1, and a toxicity threshold suitable for ranking materials according to their toxicity is obtained from the 10% effect concentration (EC10) values. Results point to chemical additives as being responsible for the toxicity found in certain plastic materials. This process is suitable for both a priori identification of the hazard posed by plastic objects in the aquatic environment, and a posteriori assessment of environmental risk caused by microplastic pollution. The method also provides a quantitative procedure appropriate for ranking plastic materials according to their toxicity to aquatic organisms. Environ Toxicol Chem 2019;38:630–637. © 2018 SETAC Standard protocol for plastics' toxicity testing including micronization of plastic objects, Tier I leachate test and calculation of toxic units (toxic units), and Tier II microparticle test and calculation of the toxicity threshold. EC10 = 10% effect concentration. [ABSTRACT FROM AUTHOR]

Published
2019
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