Bioenergetic transcriptomic responses of European flounder (Platichthys flesus) populations in contrasted environments: impacts of pollution and global warming

Abstract

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An Integrated Biomarker Approach Using Flounder to Improve Chemical Risk Assessments in the Heavily Polluted Seine Estuary

“…This weakly exploited flatfish is broadly distributed from Portugal to Norway, with young juveniles being recruited in estuaries where they live for at least two years, before migrating to the mouth of the estuaries for the reproduction, with most individuals returning to their original estuary after spawning [9]. Fitness loss (reduced fish growth and condition index, weak fecundity), modification in gene expression patterns (alterations in apoptosis, energy metabolism and immunity pathways; responses to oxidative stress; induction of detoxification), and "biomarker" signals have been detected in flounder populations located in chronically contaminated environments [10][11][12][13][14][15][16][17].…”

“…In natura observations and common garden experiments have shown contrasting patterns of energy metabolism detected by transcriptomic, enzymatic and proteomic approaches [14,18,19] and differential membrane phospholipid composition [20] in European flounder populations. These bioenergetic differences may reflect differential capacities of flounder populations to cope with environmental stressors [20,21].…”

Coupling caging and proteomics on the European flounder (Platichthys flesus) to assess the estuarine water quality at micro scale

“…The growth and survival of fish depend directly of prey availability and predation, but also of hydrological conditions and anthropogenic factors (Amara et al, 2007(Amara et al, , 2009. A large panel of pollutants (metals, PAHs, PCBs, …) are monitored in the Seine estuary, and numerous studies explored the resident wild life responses to xenobiotics in this highly polluted ecosystem (Ohe et al, 2004;Marchand et al, 2004;Galland et al, 2013; Journal Pre-proof J o u r n a l P r e -p r o o f 4 et Borcier et al, 2016;Erraud et al, 2018). In order to monitor the health status of fish in natura, many studies have measured biomarkers as cost-effective, sensitive and early warning signals of pollution in aquatic ecosystems (Amiard-Triquet and Berthet, 2015).…”