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Type: Journal article
Title: Concentrations of some legacy pollutants have increased in South Australian bottlenose dolphins from 1989 to 2014
Author: Weijs, L.
Covaci, A.
Stevenson, G.
Kemper, C.
Tomo, I.
Leusch, F.
Citation: Environmental Research, 2020; 189:1-19
Publisher: Elsevier
Issue Date: 2020
ISSN: 0013-9351
Statement of
M.G. Aartsen, M. Ackermann, J. Adams, J.A. Aguilar 13, M. Ahlers 21, M. Ahrens
Abstract: Information about pollution and its potential impact in Australian marine wildlife is scarce. To fill this knowledge gap, our study investigated concentrations of legacy pollutants as well as naturally produced methoxylated polybrominated diphenyl ethers (MeO-PBDEs) in blubber, liver, kidney and muscle of Indo-Pacific bottlenose dolphins (Tursiops aduncus) from two large inverse estuaries in South Australia from 1989 to 1995 and 2009–2014. Our results show that concentrations of most pollutant classes are relatively low compared to the literature but at the higher end of the ranges reported for marine mammals in Australia. Results for some individuals exceed toxicity thresholds indicative of immunotoxicity in marine mammals. It is important to note that concentrations of some compound classes, particularly PBDEs and polychlorinated biphenyls (PCBs), increased over a time interval of 20 years thereby placing more individuals at risk in recent years. Some of the highest concentrations of persistent organic pollutants (POPs) were measured in juveniles, which may jeopardize their development and the success of future generations. These results indicate that legacy pollutants may play a role in the long-term health of T. aduncus and should be included in biomonitoring efforts.
Keywords: Bottlenose dolphins; Australia; tissue distribution; temporal trends; Age; POPs; MeO-PBDEs
Rights: © 2020 Elsevier B.V. All rights reserved.
RMID: 1000023955
DOI: 10.1016/j.envres.2020.109834
Grant ID:
Appears in Collections:Environment Institute publications

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