Per- and polyfluoroalkyl substances (PFAS), trace elements and life history parameters of mass-stranded common dolphins (Delphinus delphis) in New Zealand
Loading...
Date
2021-12
Open Access Location
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Ltd
Rights
(c) 2021 The Author/s
CC BY-NC-ND 4.0
CC BY-NC-ND 4.0
Abstract
Profiles of 33 PFAS analytes and 12 essential and non-essential trace elements were measured in livers of stranded common dolphins (Delphinus delphis) from New Zealand. PFAS concentrations reported were largely comparable to those measured in other marine mammal species globally and composed mostly of long-chain compounds including perfluorooctanesulfonic acid (PFOS), perfluorododecanoic acid (PFDoDA), perfluorotridecanoic acid (PFTrDA) and perfluorooctanesulfonamide (FOSA). PFAS profiles did not vary significantly by location, body condition, or life history. Notably, significant positive correlations were observed within respective PFAS and trace elements. However, only negative correlations were evident between these two contaminant types, suggesting different exposure and metabolic pathways. Age-associated concentrations were found for PFTrDA and four trace elements, i.e. silver, mercury, cadmium, selenium, indicating differences in the bioaccumulation biomagnification mechanisms. Overall, our results contribute to global understanding of accumulation of PFAS by offering first insights of PFAS exposure in cetaceans living within South Pacific Australasian waters.
Description
Keywords
Diet, Emerging contaminants, Marine mammals, Reproduction, Sentinel species, Alkanesulfonic Acids, Animals, Common Dolphins, Environmental Monitoring, Fluorocarbons, New Zealand, Trace Elements
Citation
Stockin KA, Yi S, Northcott GL, Betty EL, Machovsky-Capuska GE, Jones B, Perrott MR, Law RJ, Rumsby A, Thelen MA, Graham L, Palmer EI, Tremblay LA. (2021). Per- and polyfluoroalkyl substances (PFAS), trace elements and life history parameters of mass-stranded common dolphins (Delphinus delphis) in New Zealand.. Mar Pollut Bull. 173. Pt A. (pp. 112896-).