Endocrine disruption in wild populations of chub (Leuciscus cephalus) in contaminated French streams

The Science of the Total Environment
N HinfrayJean-Marc Porcher

Abstract

The aim of this study was to assess endocrine disruptive effects in wild population of fish in five French rivers selected to represent different pollution contexts at two seasons (summer and fall). For that purpose, a panel of biometrical parameters (length, weight, and gonado-somatic index: GSI) and biochemical (ethoxyresorufin-O-deethylase: EROD, vitellogenin: VTG, and brain aromatase) and histological biomarkers (gonads histology) were used in chub (Leuciscus cephalus), a common cyprinid fish species. In fish from the reference site, EROD activity and VTG levels were low at the two seasons. Brain aromatase activities (AAs) were similar to other species and increased with increasing GSI and gonad maturation. Among the four contaminated sites, the Jalle d'Eysines River was the most impacted site. At this site, fish were exposed to estrogenic substances as demonstrated by the VTG induction in males and the arrest of development of the gonads that led to lower brain AA compared to fish from the reference site. In fish from other contaminated sites, EROD activity was induced as compared to fish from the reference site and some males had elevated concentrations of VTG. Moreover, the presence of aromatase-inhibiting compounds was ...Continue Reading

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Citations

Mar 19, 2014·Environmental Science and Pollution Research International·Yasmine SouissiSelim Aït-Aïssa
Sep 3, 2013·Ecotoxicology and Environmental Safety·Isabelle Blanchet-LetrouvéCatherine Mouneyrac
Jan 9, 2016·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Aina O AdeogunAugustine Arukwe
Jul 5, 2011·Environment International·Wilfried SanchezJean-Marc Porcher
Jul 28, 2015·Journal of Applied Toxicology : JAT·Ahmed Abdel-MoneimMaria S Sepúlveda
May 10, 2015·Environmental Science and Pollution Research International·Viganò LuigiRoscioli Claudio
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Oct 21, 2016·Hormones and Behavior·Ewa SzwejserMagdalena Chadzinska
Jun 13, 2017·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Perrine GeraudieChristophe Minier
Nov 18, 2018·The Science of the Total Environment·Maria BlancoCinta Porte
Jun 23, 2021·The Science of the Total Environment·J O OjoghoroJ P Sumpter

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