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Provedor de dados:  ArchiMer
País:  France
Título:  Assessing the long-term effect of exposure to dispersant-treated oil on fish health using hypoxia tolerance and temperature susceptibility as ecologically relevant biomarkers
Autores:  Mauduit, Florian
Farrell, Anthony P.
Domenici, Paolo
Lacroix, Camille
Le Floch, Stephane
Lemaire, Pphilippe
Nicolas-kopec, Annabelle
Whittington, Mark
Le Bayon, Nicolas
Zambonino-infante, Jose-luis
Claireaux, Guy
Data:  2019-01
Ano:  2019
Palavras-chave:  Oil spills
Polycyclic aromatic hydrocarbons (PAHs)
Fish indices
Resumo:  Consequences of exposure to polyaromatic hydrocarbons (PAH), toxic components of crude oil, on fish has been widely documented due to their ecological and economical importance. However, although forming a valuable and consistent body of knowledge, use of these data in spill response is limited. Objective of the present study was thus to facilitate the translation of published data into information of operational value. For this, we investigated the dose‐response relationship between dispersant‐treated oil exposure and ecologically‐relevant consequences by combining laboratory and field experiments. Effects were examined over almost a year using juveniles of the slow growing, commercially important European sea bass (Dicentrarchus labrax). Moreover, a reliable interpretation of biomarkers response requires a complete knowledge of the factors likely to affect their response. Inter‐populational variability is of particular importance in environmental impact assessment since biomarkers' response from population collected in an impacted area are classically compared to those collected in a clean site. Our study revealed no effect of the exposure to dispersant‐treated oil on fish hypoxia tolerance and temperature susceptibility 1 and 11 months post‐exposure. Similarly, no effect of the exposure was observed on fish coping ability with environmental contingencies in the field, regardless of the dose tested. Thus, we are confident in suggesting that a 48‐h exposure to chemically treated oil do not affect the ability of sea bass to cope with mild environmental contingencies. Finally, investigation of interpopulation variability revealed large differences in both hypoxia tolerance and temperature susceptibility among the 2 populations tested, suggesting that this variability may blur the interpretation of populations comparisons as classically practiced in impact assessment.
Tipo:  Text
Idioma:  Inglês

Editor:  Wiley
Formato:  application/pdf
Fonte:  Environmental Toxicology And Chemistry (0730-7268) (Wiley), 2019-01 , Vol. 38 , N. 1 , P. 210-221
Direitos:  This article is protected by copyright. All rights reserved


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