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Exposures of zebrafish through diet to three environmentally relevant mixtures of PAHs produce behavioral disruptions in unexposed F1 and F2 descendant ArchiMer
Vignet, Caroline; Joassard, Lucette; Lyphout, Laura; Guionnet, Tiphaine; Goubeau, Manon; Le Menach, Karyn; Brion, Francois; Kah, Olivier; Chung, Bon-chu; Budzinski, Helene; Begout, Marie-laure; Cousin, Xavier.
The release of polycyclic aromatic hydrocarbons (PAHs) into the environment has increased very substantially over the last decades. PAHs are hydrophobic molecules which can accumulate in high concentrations in sediments acting then as major secondary sources. Fish contamination can occur through contact or residence nearby sediments or though dietary exposure. In this study, we analyzed certain physiological traits in unexposed fish (F1) issued from parents (F0) exposed through diet to three PAH mixtures at similar and environmentally relevant concentrations but differing in their compositions. For each mixture, no morphological differences were observed between concentrations. An increase in locomotor activity was observed in larvae issued from fish...
Tipo: Text Palavras-chave: Danio rerio; Polycyclic aromatic hydrocarbon; Offspring; Transgenerational effect; Heavy oil; Light crude oil; Locomotor activity; Photomotor response; Anxiety-like behavior.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00259/37030/35688.pdf
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Fish Reproduction Is Disrupted upon Lifelong Exposure to Environmental PAHs Fractions Revealing Different Modes of Action ArchiMer
Vignet, Caroline; Larcher, Thibaut; Davail, Blandine; Joassard, Lucette; Le Menach, Karyn; Guionnet, Tiphaine; Lyphout, Laura; Ledevin, Mireille; Goubeau, Manon; Budzinski, Helene; Begout, Marie-laure; Cousin, Xavier.
Polycyclic aromatic hydrocarbons (PAHs) constitute a large family of organic pollutants emitted in the environment as complex mixtures, the compositions of which depend on origin. Among a wide range of physiological defects, PAHs are suspected to be involved in disruption of reproduction. In an aquatic environment, the trophic route is an important source of chronic exposure to PAHs. Here, we performed trophic exposure of zebrafish to three fractions of different origin, one pyrolytic and two petrogenic. Produced diets contained PAHs at environmental concentrations. Reproductive traits were analyzed at individual, tissue and molecular levels. Reproductive success and cumulative eggs number were disrupted after exposure to all three fractions, albeit to...
Tipo: Text Palavras-chave: Polycyclic aromatic hydrocarbons; Zebrafish; Spawning success; Fertilization; Gonad differentiation; Molecular mechanisms.
Ano: 2016 URL: https://archimer.ifremer.fr/doc/00355/46641/46465.pdf
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Chronic dietary exposure to pyrolytic and petrogenic mixtures of PAHs causes physiological disruption in zebrafish—part II: behavior ArchiMer
Vignet, Caroline; Le Menach, Karyn; Lyphout, Laura; Guionnet, Tiphaine; Frere, Laura; Leguay, Didier; Budzinski, Helene; Cousin, Xavier; Begout, Marie-laure.
In the last 10 years, behavior assessment has been developed as an indicator of neurotoxicity and an integrated indicator of physiological disruption. Polycyclic aromatic hydrocarbon (PAH) release into the environment has increased in recent decades resulting in high concentrations of these compounds in the sediment of contaminated areas. We evaluated the behavioral consequences of long-term chronic exposure to PAHs, by exposing zebrafish to diets spiked with three PAH fractions at environmentally relevant concentrations. Fish were exposed to these chemicals from their first meal (5 days postfertilization) until they became reproducing adults (at 6 months old). The fractions used were representative of PAHs of pyrolytic (PY) origin and of two oils...
Tipo: Text Palavras-chave: Danio rerio; Polycyclic aromatic hydrocarbon; Heavy oil; Light crude oil; Anxiety-like behavior; Photomotor responses; Maze; Novel tank.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00188/29910/28380.pdf
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