Dépôt numérique
RECHERCHER

Role of prey subcellular distribution on the bioaccumulation of yttrium (Y) in the rainbow trout.

Téléchargements

Téléchargements par mois depuis la dernière année

Plus de statistiques...

Cardon, Pierre-Yves; Roques, Olivier; Caron, Antoine; Rosabal, Maikel; Fortin, Claude ORCID logoORCID: https://orcid.org/0000-0002-2479-1869 et Amyot, Marc (2020). Role of prey subcellular distribution on the bioaccumulation of yttrium (Y) in the rainbow trout. Environmental Pollution , vol. 258 . p. 113804. DOI: 10.1016/j.envpol.2019.113804.

[thumbnail of P3689.pdf]
Prévisualisation
PDF
Disponible sous licence Creative Commons Attribution Non-commercial No Derivatives.

Télécharger (334kB) | Prévisualisation

Résumé

Our knowledge of the processes leading to the bioaccumulation of rare earth elements (REE) in aquatic biota is limited. As the contamination of freshwater ecosystems by anthropogenic REE have recently been reported, it becomes increasingly urgent to understand how these metals are transferred to freshwater organisms in order to develop appropriate guidelines. We exposed rainbow trout (Oncorhynchus mykiss) to an REE, yttrium (Y), to either a range of Y-contaminated prey (Daphnia magna) or a range of Y-contaminated water. For the feeding experiment, the relationship between the Y assimilation by O. mykiss and the Y subcellular fractionation in D. magna was evaluated. Assimilation efficiency of Y by O. mykiss was low, ranging from 0.8 to 3%. These values were close to the proportion of Y accumulated in D. magna cytosol, 0.6–2%, a theoretical trophically available fraction. Moreover, under our laboratory conditions, water appeared as a poor source of Y transfer to O. mykiss. Regardless of the source of contamination, a similar pattern of Y bioaccumulation among O. mykiss tissues was revealed: muscles < liver < gills < intestine. We conclude that the trophic transfer potential of Y is low and the evaluation of Y burden in prey cytosol appears to be a relevant predictor of Y assimilation by their consumers.

Type de document: Article
Mots-clés libres: yttrium; subcellular partitioning; trophic transfer; metal; fish; rare earth elements
Centre: Centre Eau Terre Environnement
Date de dépôt: 17 avr. 2020 18:16
Dernière modification: 08 févr. 2022 20:06
URI: https://espace.inrs.ca/id/eprint/10116

Gestion Actions (Identification requise)

Modifier la notice Modifier la notice