Respective contributions of diet and medium to the bioaccumulation of pharmaceutical compounds in the first levels of an aquatic trophic web - HAL-SDE - Sciences de l'environnement Access content directly
Journal Articles Environmental Science and Pollution Research Year : 2015

Respective contributions of diet and medium to the bioaccumulation of pharmaceutical compounds in the first levels of an aquatic trophic web

Abstract

Nowadays, pharmaceuticals (PCs) are ubiquitous in aquatic ecosystems. It is known that these compounds have ecotoxic effects on aquatic organisms at low concentrations. Moreover, some of them can bioaccumulate inside organisms or trophic webs exposed at environmental concentrations and amplify ecotoxic impacts. PCs can bioaccumulate in two ways: exposure to a medium (e.g., respiration, diffusion, etc.) and/or through the dietary route. Here, we try to assess the respective contributions of these two forms of contamination of the first two levels of an aquatic trophic web. We exposed Daphnia magna for 5 days to 0, 5, and 50 μg/L 15N-tamoxifen and then fed them with control and contaminated diets. We used an isotopic method to measure the tamoxifen content inside the daphnids after several minutes’ exposure and every day before and after feeding. We found that tamoxifen is very bioaccumulative inside daphnids (BCF up to 12,000) and that the dietary route has a significant impact on contamination by tamoxifen (BAF up to 22,000), especially at low concentrations in medium.
Fichier principal
Vignette du fichier
orias2015.pdf (196.2 Ko) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-01281625 , version 1 (15-09-2023)

Identifiers

Cite

Frédéric Orias, Laurent Simon, Yves Perrodin. Respective contributions of diet and medium to the bioaccumulation of pharmaceutical compounds in the first levels of an aquatic trophic web. Environmental Science and Pollution Research, 2015, 22 (24), pp.20207-20214. ⟨10.1007/s11356-015-5243-7⟩. ⟨hal-01281625⟩
101 View
10 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More