Impact of magnetic fields generated by AC/DC submarine power cables on the behavior of juvenile European lobster (Homarus garnmarus)

• Published in: Aquatic Toxicology
• Main Authors: Taormina, Bastien, Di Poi, Carole, Agnalt, Ann-Lisbeth, Carlier, Antoine, Desroy, Nicolas, Escobar-Lux, Rosa Helena, d'Eu, Jean-Francois, Freytet, Florian, Durif, Caroline M. F.
• Other Authors: France Energies Marines Brest, Unité Dynamiques des Écosystèmes Côtiers (DYNECO), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Institute of Marine Research Bergen (IMR), University of Bergen (UiB), Laboratoire Environnement Ressources de Bretagne Nord (LERBN), Unité Littoral (LITTORAL), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Austevoll Research Station (IMR), University of Bergen (UiB)-University of Bergen (UiB)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2020
• Subjects: ACL; mortality; exposure; Behavior; Anthropogenic impact; atlantic spiny lobster; cancer; crab; electromagnetic-fields; Homarus gammarus; Magnetic field; navigation; orientation; potential impacts; Submarine power cable; [SDE.BE]Environmental Sciences/Biodiversity and Ecology; European lobster
• Online Access: https://hal.science/hal-03015207; https://hal.science/hal-03015207/document; https://hal.science/hal-03015207/file/S0166445X19307854.pdf; https://doi.org/10.1016/j.aquatox.2019.105401

WOS:000517853700004 International audience The number of submarine power cables using either direct or alternating current is expected to increase drastically in coming decades. Data concerning the impact of magnetic fields generated by these cables on marine invertebrates are scarce. In this context, the aim of this study was to explore the potential impact of anthropogenic static and time-varying magnetic fields on the behavior of recently settled juvenile European lobsters (Homarus gammarus) using two different behavioral assays. Day-light conditions were used to stimulate the sheltering behavior and facilitate the video tracking. We showed that juvenile lobsters did not exhibit any change of behavior when submitted to an artificial magnetic field gradient (maximum intensity of 200 mu T) compared to non-exposed lobsters in the ambient magnetic field. Additionally, no influence was noted on either the lobsters' ability to find shelter or modified their exploratory behavior after one week of exposure to anthropogenic magnetic fields (225 +/- 5 mu T) which remained similar to those observed in control individuals. It appears that static and time-varying anthropogenic magnetic fields, at these intensities, do not significantly impact the behavior of juvenile European lobsters in daylight conditions. Nevertheless, to form a complete picture for this biological model, further studies are needed on the other life stages as they may respond differently.