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Element concentrations, histology and serum biochemistry of arctic char (Salvelinus alpinus) and shorthorn sculpins (Myoxocephalus scorpius) in northwest Greenland

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Norregaard, RD, Bach, L, Geertz-Hansen, O, Nabe-Nielsen, J, Nowak, B ORCID: 0000-0002-0347-643X, Jantawongsri, K, Dang, TS, Sondergaard, J, Leifsson, PS, Jenssen, BM, Ciesielski, TM, Arukwe, A and Sonne, C 2022 , 'Element concentrations, histology and serum biochemistry of arctic char (Salvelinus alpinus) and shorthorn sculpins (Myoxocephalus scorpius) in northwest Greenland' , Environmental Research, vol. 208 , pp. 1-10 , doi: 10.1016/j.envres.2022.112742.

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Abstract

The increasing exploratory efforts in the Greenland mineral industry, and in particular, the proposed rare earth element (REE) mining projects, requires an urgent need to generate data on baseline REE concentrations and their potential environmental impacts. Herein, we have investigated REE concentrations in anadromous Arctic char (Salvelinus alpinus) and shorthorn sculpins (Myoxocephalus scorpius) from uncontaminated sites in Northwest Greenland, along with the relationships between the element concentrations in gills and liver, and gill histology and serum biochemical parameters. Concentrations of arsenic, silver, cadmium, cerium, chromium, copper, dysprosium, mercury, lanthanum, neodymium, lead, selenium, yttrium, and zinc in gills, liver and muscle are presented. No significant statistical correlations were observed between element concentrations in different organs and gill histology or serum biochemical parameters. However, we observed positive relationships between age and histopathology, emphasizing the importance of including age as a co-variable in histological studies of fish. Despite no element-induced effects were observed, this study is considered an important baseline study, which can be used as a reference for the assessment of impacts of potential future REE mine sites in Greenland.

Item Type: Article
Authors/Creators:Norregaard, RD and Bach, L and Geertz-Hansen, O and Nabe-Nielsen, J and Nowak, B and Jantawongsri, K and Dang, TS and Sondergaard, J and Leifsson, PS and Jenssen, BM and Ciesielski, TM and Arukwe, A and Sonne, C
Keywords: Arctic char, shorthorn sculpin, Greenland, elements, histology, biochemistry, serum
Journal or Publication Title: Environmental Research
Publisher: Academic Press Inc Elsevier Science
ISSN: 0013-9351
DOI / ID Number: 10.1016/j.envres.2022.112742
Copyright Information:

© 2022 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

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