Per- and polyfluoroalkyl substances (PFAS), trace elements and life history parameters of mass-stranded common dolphins (Delphinus delphis) in New Zealand

• DOI: 10.1016/j.marpolbul.2021.112896
• Publication Date: 2021-09-30T16:23:20Z
• Authors: K.A. Stockin; S. Yi; G.L. Northcott; E.L. Betty; G.E. Machovsky-Ca...; B. Jones; M.R. Perrott; R.J. Law; A. Rumsby; M.A. Thelen; L. Graham; E.I. Palmer; L.A. Tremblay
• Keywords: Delphinus delphis; Biomagnification; Arsenobetaine; Mercury; Trace element

Profiles of 33 PFAS analytes and 12 essential non-essential trace elements were measured in livers stranded common dolphins (Delphinus delphis) from New Zealand. concentrations reported largely comparable to those other marine mammal species globally composed mostly long-chain compounds including perfluorooctanesulfonic acid (PFOS), perfluorododecanoic (PFDoDA), perfluorotridecanoic (PFTrDA) perfluorooctanesulfonamide (FOSA). profiles did not vary significantly by location, body condition, or life history. Notably, significant positive correlations observed within respective elements. However, only negative evident between these two contaminant types, suggesting different exposure metabolic pathways. Age-associated found for PFTrDA four elements, i.e. silver, mercury, cadmium, selenium, indicating differences the bioaccumulation biomagnification mechanisms. Overall, our results contribute global understanding accumulation offering first insights cetaceans living South Pacific Australasian waters.