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Assessment of PCDD/Fs, dioxin-like PCBs and PBDEs in Mediterranean striped dolphins

AuthorsCapanni, F.; Muñoz-Arnanz, Juan; Marsili, Letizia; Fossi, M. Cristina; Jiménez, Begoña
Stenella coeruleoalba
Mediterranean Sea
Issue Date2020
CitationMarine Pollution Bulletin 156 (2020)
AbstractBio-accumulation of high levels of persistent organic pollutants represent a serious conservation concern for Mediterranean marine odontocetes. In this study, blubber samples from 10 striped dolphins (Stenella coeruleoalba) stranded along the Italian coasts during 2015–2016 were analyzed. All specimens showed dl-PCBs > PBDEs ≫ PCDD/Fs. Median concentrations were 1820 ng/g l.w., 456 ng/g l.w. and 23.9 pg/g l.w., respectively. dl-PCBs accounted for 93.3% of total TEQs. PBDE concentrations suggest that the Mediterranean basin may be considered a hotspot for organobromine compounds. OCDD did not represent the greatest contributor to PCDD/Fs profile, most likely due to a change in dioxin environmental sources in the last two-three decades. Despite international regulations, the present study emphasized that POP exposure levels in Mediterranean striped dolphins have not declined significantly in recent years. Toxicological and risk assessment studies on this sentinel species may provide an early indication of potential adverse health effects on Mediterranean ecosystems.
Publisher version (URL)http://dx.doi.org/10.1016/j.marpolbul.2020.111207
Identifiersdoi: 10.1016/j.marpolbul.2020.111207
issn: 1879-3363
Appears in Collections:(IQOG) Artículos
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