Differences in chemical contaminants bioaccumulation and ecotoxicology biomarkers in Mytilus edulis and Mytilus galloprovincialis and their hybrids

Type Article
Date 2022-01
Language English
Author(s) Sussarellu RossanaORCID1, Chouvelon Tiphaine1, Aminot YannORCID1, Couteau Jerome2, Loppion Geraldine2, Dégremont LionelORCID3, Lamy Jean-BaptisteORCID3, Akcha Farida1, Rouxel Julien1, Berthelin Clothilde4, Briaudeau TifanieORCID5, Izagirre Urtzi5, Mauffret AourellORCID1, Grouhel AnneORCID1, Burgeot Thierry1
Affiliation(s) 1 : Ifremer, BE, F–44300, Nantes, France
2 : SARL TOXEM, Le Havre, France
3 : Ifremer, SG2M-LGPMM, F-17390, La Tremblade, France
4 : FRE 2030 BOREA, Université de Caen-Normandie, Caen, France
5 : Dept. of Zoology and Animal Cell Biology, Research Centre for Experimental Marine Biology and Biotechnology (PiE-UPV/EHU), Plentzia, Basque Country, Spain
Source Environmental Pollution (0269-7491) (Elsevier BV), 2022-01 , Vol. 292 , N. Part. A , P. 118328 (16p.)
DOI 10.1016/j.envpol.2021.118328
WOS© Times Cited 8
Keyword(s) Mussel, Hybridization, Genetics, Metal trace elements, Biomonitoring

The Mytilus mussels are spread all over the world and many related species coexist in several areas and can produce hybrid offspring. Mussels have been used for decades in national and international programs to monitor chemical contamination in the environment. Differences in bioaccumulation and biotransformation abilities between species and their hybrids should be evaluated to assess the comparability of the results obtained within the international biomonitoring programs. The objective of this study was to characterize bioaccumulation abilities and biomarker responses in Mytilus edulis, Mytilus galloprovincialis and their hybrids via an in situ transplantation experimentation on their progenies. Four mussel groups (M. edulis, M. galloprovincialis and two hybrids batches) issued from genetically characterized parents were transplanted for one year in Charente Maritime (France) to ensure their exposure to identical sources of contamination. The bioaccumulation of several families of contaminants (trace metals, polycyclic aromatic hydrocarbons, polybrominated diphenyl ethers, polychlorinated biphenyls), the response of several biomarkers (DNA strand breaks level, lysosomal membrane stability, metallothionein content, acetylcholine esterase activity) and some physiological parameters (growth, mortality, gonadal development), were analyzed. Differences were observed between species, however they were contaminant-specific. Variations in contaminants levels were observed between progenies, with higher levels of Cu, PBDE, PCB in M. edulis, and higher levels of Cd, Hg, Zn in M galloprovincialis. This study demonstrated that variations in contaminant bioaccumulation and different biomarker responses exist between Mytilus species in the field. Data on species or the presence of hybrid individuals (or introgression) is an important additional parameter to add to biomonitoring programs databases.

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Sussarellu Rossana, Chouvelon Tiphaine, Aminot Yann, Couteau Jerome, Loppion Geraldine, Dégremont Lionel, Lamy Jean-Baptiste, Akcha Farida, Rouxel Julien, Berthelin Clothilde, Briaudeau Tifanie, Izagirre Urtzi, Mauffret Aourell, Grouhel Anne, Burgeot Thierry (2022). Differences in chemical contaminants bioaccumulation and ecotoxicology biomarkers in Mytilus edulis and Mytilus galloprovincialis and their hybrids. Environmental Pollution, 292(Part. A), 118328 (16p.). Publisher's official version : https://doi.org/10.1016/j.envpol.2021.118328 , Open Access version : https://archimer.ifremer.fr/doc/00729/84091/