Annasawmy P. auteur aut IRD Point David auteur aut IRD Romanov E. V. auteur aut IRD Bodin Nathalie auteur aut IRD text journalArticle eng text/pdf born digital access Mercury (Hg) concentrations and stable isotope values (delta C-13 and delta N-15) were investigated in micronekton collected from La Pérouse and MAD-Ridge seamounts, Reunion Island and the southern Mozambique Channel. Organisms occupying epipelagic habitats showed lower Hg concentrations relative to deeper dwelling bentho-pelagic ones. Increasing Hg concentrations with increasing body size were recorded in the Mozambique Channel and Reunion Island. Positive relationships were observed between Hg levels and delta N-15 values in pelagic nekton assemblages collected at MAD-Ridge seamount and the southern Mozambique Channel, suggesting bio-magnification of Hg. Concentrations of Hg in organisms across the south-western Indian Ocean were within the same range of values. Total Hg concentrations depend on a range of factors linked to habitat range, body size and trophic position of the individuals. To our knowledge, this is the first study investigating the patterns of Hg concentrations in pelagic nekton assemblages from the south-western Indian Ocean. specialized Trophic ecology Mercury Seamount Squid Crustacean Fish OCEAN INDIEN MADAGASCAR REUNION 038 034 174 113151 [16 ] 2022 0025-326X https://www.documentation.ird.fr/hor/fdi:010083921 10.1016/j.marpolbul.2021.113151 0025-326X [F B010083921] https://www.documentation.ird.fr/hor/fdi:010083921 https://www.documentation.ird.fr/intranet/publi/2022-02/010083921.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2022-02-04 2025-02-24 fdi:010083921 fre