Rare earth element bioaccumulation in the yellow and silver European eel (Anguilla anguilla): A case study in the Loire estuary (France)
| Autor: | Yannick François, Marjorie Lortholarie, Laurence Poirier, A Kamari, M Couderc, Aurore Zalouk-Vergnoux, Christine Herrenknecht |
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| Rok vydání: | 2020 |
| Předmět: |
Male
endocrine system animal structures Environmental Engineering 010504 meteorology & atmospheric sciences Rare earth Anthropogenic pressure 010501 environmental sciences 01 natural sciences Animals Environmental Chemistry Sexual Maturation Waste Management and Disposal 0105 earth and related environmental sciences geography geography.geographical_feature_category biology Rare-earth element Mean value Estuary Anguilla Silver eel biology.organism_classification Bioaccumulation Pollution Life stage Environmental chemistry Environmental science Female France Estuaries |
| Zdroj: | Science of The Total Environment. 719:134938 |
| ISSN: | 0048-9697 |
| Popis: | In the present work, rare earth elements (REEs) were measured in European eel muscles (Anguilla anguilla) from the Loire estuary in France. This study site is characterized by a large anthropogenic pressure with potential activities releasing REEs such as oil refineries, aeronautic and naval industries, wind turbine industries, hospitals with magnetic resonance imaging and coal-fired power plants. These activities may lead to increased REE concentrations in sediments the primary habitat of European eels. In the present work, REE bioaccumulation was evaluated by determining the concentrations in yellow and silver eel muscles sampled at three different locations in the Loire estuary and at two periods (2011/2012 and 2018/2019). The aims of this study were the understanding of the spatio-temporal influences (sampling site and sampling period) and intraspecific variations (age, sex, sexual maturation, length, weight, and parasitism) on the whole REE bioaccumulation. The mean value of the sum of REE concentrations (∑REEs) was 2.91, 6.48 and 12.60 µg/kg of muscle from respectively yellow eels, female silver eels and male silver eels fished in 2018/2019. The results showed that silver males accumulated more REEs than silver females and silver eels accumulate more REEs than yellow ones. Regarding the determination of spatio-temporal variations, an increase of REE concentrations for silver eel muscles between the two periods was observed, certainly related to the increase of REE uses. Finally, a trend of higher contamination of eels sampled in the downstream of Nantes was noticed for yellow eels. |
| Databáze: | OpenAIRE |
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