A large diversity of organohalogen contaminants reach the meso- and bathypelagic organisms in the Bay of Biscay (northeast Atlantic)

Type Article
Date 2022-11
Language English
Author(s) Munschy Catherine1, Spitz J.2, 3, Bely Nadege1, Héas-Moisan Karine1, Olivier Nathalie1, Pollono Charles1, Chouvelon Tiphaine1, 3
Affiliation(s) 1 : Ifremer, CCEM Contamination Chimique des Ecosystèmes Marins, F-44000 Nantes, France
2 : Centre d'Etude Biologique de Chizé (CEBC), UMR 7372, Université de La Rochelle / CNRS, 79360 Villiers-en-Bois, France
3 : Observatoire PELAGIS, UAR 3462, Université de La Rochelle / CNRS, 17000 La Rochelle, France
Source Marine Pollution Bulletin (0025-326X) (Elsevier BV), 2022-11 , Vol. 184 , P. 114180 (13p.)
DOI 10.1016/j.marpolbul.2022.114180
WOS© Times Cited 6
Keyword(s) Deep-sea, Crustaceans, Fish, Persistent organic pollutants, Contaminants of emerging concern, Species -specific profiles

Deep-sea ecosystems play a key role in the cycling and vertical transfer of matter and energy in oceans. Although the contamination of deep-sea demersal and benthic organisms by persistent organic pollutants has been proven, deep pelagic species have been far less studied. To fill these gaps, we studied the occurrence of a large variety of hydrophobic organic contaminants including polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs), legacy and alternative brominated flame retardants (BFRs) and per- and polyfluoroalkyl substances (PFASs) in crustaceans and fish species collected in the Bay of Biscay, northeast Atlantic. The results highlighted the global predominance of PCBs in fish, followed by OCPs, PFASs and PBDEs, with highly variable concentrations among species. Most of the chlorinated or brominated contaminants showed increasing concentrations with increasing δ15N values, while most PFASs showed inverse trends. The contaminant profiles and diagnostic ratios revealed species-specific metabolic capacities and peculiar contribution of highly-brominated BFRs.

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Munschy Catherine, Spitz J., Bely Nadege, Héas-Moisan Karine, Olivier Nathalie, Pollono Charles, Chouvelon Tiphaine (2022). A large diversity of organohalogen contaminants reach the meso- and bathypelagic organisms in the Bay of Biscay (northeast Atlantic). Marine Pollution Bulletin, 184, 114180 (13p.). Publisher's official version : https://doi.org/10.1016/j.marpolbul.2022.114180 , Open Access version : https://archimer.ifremer.fr/doc/00795/90738/