Exploration of Daphnia behavioral effect profiles induced by a broad range of toxicants with different modes of action
CHEVALIER, Julie
EDF R&D [EDF R&D]
Laboratoire de Physico et Toxico-Chimie des systèmes naturels [LPTC]
EDF R&D [EDF R&D]
Laboratoire de Physico et Toxico-Chimie des systèmes naturels [LPTC]
HARSCOET, Elodie
Laboratoire de Physico et Toxico-Chimie des systèmes naturels [LPTC]
Environnements et Paléoenvironnements OCéaniques [EPOC]
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Laboratoire de Physico et Toxico-Chimie des systèmes naturels [LPTC]
Environnements et Paléoenvironnements OCéaniques [EPOC]
CHEVALIER, Julie
EDF R&D [EDF R&D]
Laboratoire de Physico et Toxico-Chimie des systèmes naturels [LPTC]
EDF R&D [EDF R&D]
Laboratoire de Physico et Toxico-Chimie des systèmes naturels [LPTC]
HARSCOET, Elodie
Laboratoire de Physico et Toxico-Chimie des systèmes naturels [LPTC]
Environnements et Paléoenvironnements OCéaniques [EPOC]
Laboratoire de Physico et Toxico-Chimie des systèmes naturels [LPTC]
Environnements et Paléoenvironnements OCéaniques [EPOC]
CACHOT, Jérôme
Laboratoire de Physico et Toxico-Chimie des systèmes naturels [LPTC]
Environnements et Paléoenvironnements OCéaniques [EPOC]
< Réduire
Laboratoire de Physico et Toxico-Chimie des systèmes naturels [LPTC]
Environnements et Paléoenvironnements OCéaniques [EPOC]
Langue
EN
Article de revue
Ce document a été publié dans
Environmental Toxicology and Chemistry. 2015, vol. 34, n° 8, p. 17601769
Résumé en anglais
Behavior is increasingly reported as a sensitive and early indicator of toxicant stress in aquatic organisms. However, the systematic understanding of behavioral effects and comparisons between effect profiles is hampered ...Lire la suite >
Behavior is increasingly reported as a sensitive and early indicator of toxicant stress in aquatic organisms. However, the systematic understanding of behavioral effects and comparisons between effect profiles is hampered because the available studies are limited to few chemicals and differ in the exposure conditions and effect parameters examined. The aims of the present study were 1) to explore behavioral responses of Daphnia magna exposed to different toxicants, 2) to compare behavioral effect profiles with regard to chemical modes of action, and 3) to determine the sensitivity and response time of behavioral parameters in a new multi-cell exposure system named Multi-DaphTrack compared with currently utilized tests. Twelve compounds covering different modes of toxic action were selected to sample a wide range of potential effect profiles. Acute standard immobilization tests and 48h of behavioral tracking were performed in the customized Multi-DaphTrack system and a single-cell commercialized biological early warning system. Contrasting behavioral profiles were observed for average speed (i.e., intensity, time of effect onset, effect duration), but no distinct behavioral profiles could be drawn from the chemical mode of action. Most compounds tested in the Multi-DaphTrack system induced an early and significant average speed increase at concentrations near or below the 10% effective concentration (48h) of the acute immobilization test, demonstrating that the Multi-DaphTrack system is fast and sensitive. To conclude, behavior endpoints could be used as an alternative or complement to the current acute standard test or chemical analysis for the predictive evaluation of ecotoxic effects of effluents or water bodies.< Réduire
Mots clés en anglais
DAPHNIA MAGNA
BEHAVIORAL TRACKING SYSTEMS
BEHAVIOR
EFFECT-BASED TOOL
CHEMICAL MODES OF ACTION