Influence of dispersant application on the toxicity to sea urchin embryos of crude and bunker oils representative of prospective oil spill threats in Arctic and Sub-Arctic seas
| Autor: | Urtzi Izagirre, Ionan Marigómez, Nestor Etxebarria, Laura DeMiguel-Jiménez, Xabier Lekube |
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| Přispěvatelé: | European Commission |
| Rok vydání: | 2021 |
| Předmět: |
010501 environmental sciences
Aquatic Science Oceanography oil 01 natural sciences Dispersant Paracentrotus lividus 03 medical and health sciences biology.animal Animals dispersant Petroleum Pollution Prospective Studies Sea urchin Oil toxicity 030304 developmental biology 0105 earth and related environmental sciences sea urchin embryo 0303 health sciences Light crude oil biology toxicity Fuel oil biology.organism_classification Pollution iced seas Petroleum mixtures Arctic Environmental chemistry Sea Urchins Toxicity Environmental science Oils Water Pollutants Chemical |
| Zdroj: | Addi. Archivo Digital para la Docencia y la Investigación instname |
| Popis: | This study deals with the toxicity assessment of crude and bunker oils representative of prospective oil spill threats in Arctic and Sub-Arctic seas (NNA: Naphthenic North-Atlantic crude oil; MGO: Marine Gas Oil; IFO: Intermediate Fuel Oil 180), alone or in combination with a third-generation dispersant (Finasol OSR52). Early life stages of sea urchin, Paracentrotus lividus, were selected for toxicity testing of oil low-energy water accommodated fractions. A multi-index approach, including larval size increase and malformation, and developmental disruption as endpoints, was sensitive to discriminate from slight to severe toxicity caused by the tested aqueous fractions. IFO (heavy bunker oil) was more toxic than NNA (light crude oil), with MGO (light bunker oil) in between. The dispersant was toxic and further on it enhanced oil toxicity. Toxic units revealed that identified PAHs were not the main cause for toxicity, most likely exerted by individual or combined toxic action of non-measured compounds. The authors would like to gratefully acknowledge financial support from the European Union's Horizon 2020 research and innovation program EU H2020-BG-2005-2 under grant agreement No 679266 (project GRACE), from the Spanish Ministry of Education, Culture and Sport through pre-doctoral fellowship FPU15/05517, from the Spanish Ministry of Economy, Industry and Competitiveness through the project seaDIMENTOX (CTM2017-87766-R) and from the Basque Government through Consolidated Research Group GIC IT810-13 and IT1302-19 |
| Databáze: | OpenAIRE |
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