Persistent organic pollutants in red- and white-blooded High-Antarctic notothenioid fish from the remote Weddell Sea.

Strobel, Anneli; Schmid, Peter; Burkhardt-Holm, Patricia; Segner, Helmut; Zennegg, Markus (2018). Persistent organic pollutants in red- and white-blooded High-Antarctic notothenioid fish from the remote Weddell Sea. Chemosphere, 193, pp. 213-222. Elsevier Science 10.1016/j.chemosphere.2017.11.020

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It has been suggested that High-Antarctic waters, despite their remoteness from human activities, are impacted by anthropogenic pollution, and that the local biota are accumulating the contaminants. At present, no data exist on persistent organic pollutant (POP) body burdens for notothenioid fish inhabiting the High-Antarctic Weddell Sea. We determined the pollutant load in white muscle tissue of red- and white-blooded notothenoids from the Weddell Sea (Trematomus loennbergii and Chionodraco hamatus, respectively), and compared them to our previous measurements of POPs in Low-Antarctic notothenioids. Analytes included various organochlorine pesticides (OCPs), polychlorinated biphenyls (indicator (i) PCBs, dioxine-like (dl) PCBs) and polybrominated diphenyl ethers (PBDEs). The analytical concentrations were converted into 2,3,7,8-TCDD toxic equivalents (TEQs). Compared to T. loennbergii, C. hamatus had lower levels of β-HCH (0.45 vs. 4.5 ng glipid weight), and Σ iPCBs (30 vs. 39 ng glipid weight), as well as lower levels of Σ PBDEs (131 vs. 261 ng gfresh weight). POP body burdens and TEQs were mostly similar to those of Low-Antarctic notothenioids analysed previously, and not related to the trophic positions of the species. The variations in POP levels between and within High- and Low-Antarctic notothenioids only marginally corresponded to sampling site, ecological differences or trophic levels of the species, and might rather be related to metabolism or age effects. The present findings suggest that fishes of High-Antarctic waters, although this area is more remote and less influenced by local human activities, do not show lower POP body burdens than fishes from Low-Antarctic waters.

Item Type:

Journal Article (Original Article)

Division/Institute:

05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP)
05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP) > Center for Fish and Wildlife Health (FIWI)

UniBE Contributor:

Strobel, Anneli and Segner, Helmut

Subjects:

600 Technology > 630 Agriculture

ISSN:

0045-6535

Publisher:

Elsevier Science

Language:

English

Submitter:

Lucia Gugger-Raaflaub

Date Deposited:

18 Apr 2018 11:06

Last Modified:

27 Oct 2019 21:32

Publisher DOI:

10.1016/j.chemosphere.2017.11.020

PubMed ID:

29136567

Uncontrolled Keywords:

2,3,7,8-TCDD toxic equivalents (TEQs) Chionodraco hamatus Organochlorine pesticides (OCPs) Polybrominated diphenyl ethers (PBDEs) Polychlorinated biphenyls (PCBs) Trematomus loennbergii

BORIS DOI:

10.7892/boris.112106

URI:

https://boris.unibe.ch/id/eprint/112106

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