10 research outputs found
High pollutant exposure level of the largest European community of bottlenose dolphins in the English Channel
The objective of this study was to assess the levels of persistent organic pollutants (POPs) and mercury (T-Hg) in the blubber and skin, respectively, of the free-ranging bottlenose dolphins, Tursiops truncatus, from the Normanno-Breton Gulf, one of the largest identified coastal population in Europe.
Among all the POPs analysed in this study, the ∑NDL-PCBs were the most abundant compounds found in the blubber (mean: 1.33x105 – 0.65x105 ng.g-1 lipid weight (lw) for males and females respectively), followed by ∑DDX (1.11x104 – 4.67x103 ng.g-1 lw) > ∑DL-PCBs (8.06 x103– 2.62 x103ng.g-1 lw)> ∑PBDEs (1.95 x103– 0.64 x103ng.g-1 lw) > dieldrin (1.86 x103– 0.18 x103 ng.g-1 lw) > ∑endosulfan (405– 62 ng.g-1 lw) > HCB (86 – 52 ng.g-1 lw) > ∑HCHs (47 – 60 ng.g-1 lw) > ∑chlordane (24 – 0.97 ng.g-1 lw) > ∑PCDFs (0.3 – 0.1 ng.g-1 lw) > ∑PCDDs (0.06 – 0.05 ng.g-1 lw).
The T-Hg concentrations were highly variable between individuals (2.45 x103 ng.g-1 to 21.3 x103 ng.g-1 dry weight, dw). The reported concentrations are among the highest reported for cetaceans. We strongly recommend that the Normanno-Breton Gulf be a special area of conservation (cSAC) candidate because it contains the last large European population of bottlenose dolphins (rare or threatened within a European context) designated under the EC Habitats Directive
Multibiomarker assessment of cerium and titanium dioxide nanoparticles (nCeO2 and nTiO2) sublethal effects on freshwater invertebrates
International audienc
Evaluation des effets du dioxyde de cerium nanoparticulaire (nCeO2) sur les invertebres dulçaquicoles Dreissena polymorpha et Gammarus roeseli a l’aide d’une batterie de biomarqueurs
International audienc