Common and inter-specific toxic effects in three wild fish species after chronic gamma irradiation of early stages

• Published in: Journal of Environmental Radioactivity
• Main Authors: Simon, Olivier, Guirandy, Noémie, Dasque, Lea, Dubourg, Nicolas, Camilleri, Virginie, Cavalie, Isabelle, Turiès, Cyril, Bado-Nilles, A., Espinat, L., Réalis, E., Gagnaire, Béatrice
• Other Authors: Laboratoire d'écologie et d'écotoxicologie des radionucléides (IRSN/PSE-ENV/SERPEN/LECO), Service de Radioprotection des Populations et de l’Environnement (IRSN/PSE-ENV/SERPEN), Institut de Radioprotection et de Sûreté Nucléaire (IRSN)-Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Stress Environnementaux et BIOsurveillance des milieux aquatiques (SEBIO), Institut National de l'Environnement Industriel et des Risques (INERIS)-Université de Reims Champagne-Ardenne (URCA)-Université Le Havre Normandie (ULH), Normandie Université (NU)-Normandie Université (NU)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Centre Alpin de Recherche sur les Réseaux Trophiques et Ecosystèmes Limniques (CARRTEL), Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Institut de Radioprotection et de Sûreté Nucléaire - IRSN / 50% Public
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2024
• Subjects: Gamma irradiation; Wild fish; Early stages; Effects; Ecological risk assessment; [SDE]Environmental Sciences; [SDV]Life Sciences [q-bio]; Arctic
• Online Access: https://irsn.hal.science/irsn-04604557; https://irsn.hal.science/irsn-04604557/document; https://irsn.hal.science/irsn-04604557/file/2024%20Simon%20et%20al.pdf; https://doi.org/10.1016/j.jenvrad.2024.107459

International audience The objective of this study was to investigate the effects of gamma irradiation on the aquatic environment. We used three wild fish species to compare phenotypic responses with a fish model such as Danio rerio. We focused on embryonic development, a sensitive life stage to stressors like ionizing radiation, to evaluate the effects of exposure to 0.5 and 5 mGy h−1 on Arctic char, trout and stickleback embryos from fertilization to free-swimming larvae. Irradiation did not cause mortality but induced an acceleration of hatching in the three species. These new data on wild species, obtained under comparable irradiation conditions, did not go against the threshold values for the protection of freshwater aquatic ecosystems. Moreover, irradiation caused inter-specific sublethal effects, such as an increase in non-eyed egg proportion in Arctic char, an increase in the incubation period in trout and an acceleration of larval mortality in stickleback. The consequences of these early effects on the adult stage remain to be studied.