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First data on uranium uptake in three nototheniid fishes from Antarctica (James Ross Island)
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SYSNO ASEP 0491989 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title First data on uranium uptake in three nototheniid fishes from Antarctica (James Ross Island) Author(s) Roche, Kevin Francis (UBO-W) RID, SAI
Kuta, J. (CZ)
Sedláček, I. (CZ)
Červenka, R. (CZ)
Tomanová, K. (CZ)
Jurajda, Pavel (UBO-W) RID, SAI, ORCIDNumber of authors 6 Source Title Chemosphere. - : Elsevier - ISSN 0045-6535
Roč. 211, November (2018), s. 510-514Number of pages 5 s. Language eng - English Country GB - United Kingdom Keywords Antarctic Peninsula ; Bioaccumulation ; Czech Antarctic station ; Notothenioidei ; Radioactive contaminants ; Shallow coastal waters Subject RIV EH - Ecology, Behaviour OECD category Environmental sciences (social aspects to be 5.7) R&D Projects GBP505/12/G112 GA ČR - Czech Science Foundation (CSF) Institutional support UBO-W - RVO:68081766 UT WOS 000446149600054 EID SCOPUS 85053209112 DOI 10.1016/j.chemosphere.2018.07.195 Annotation Recent studies have confirmed historic atmospheric deposition of uranium in Antarctica, with a steep and significant increase in levels deposited since the 1980s in Antarctic Peninsula ice core samples. To date, however, there has been little or no attention paid to uranium in the Antarctic food web. Here, we present results for uranium content in scales of three common nototheniid species (Trematomus bernacchii, Gobionotothen gibberifrons, Notothenia coriiceps) from coastal waters off James Ross Island (Antarctic Peninsula). While mean total uranium levels (mean ± SD) were low and similar between species (N. coriiceps 0.08 mg g 1 ± 0.01, T. bernacchii 0.17 mg g 1 ± 0.10, G. gibberifrons 0.11 mg g 1 ± 0.04), linear regressions against standard length indicated bioaccumulation in T. bernacchii (ANOVA, F ¼ 7.8349, P ¼ 0.0076). We suggest this may be the result of dietary specialisation on prey with calcareous shells that accumulate uranium. To the best of our knowledge, this paper provides the first quantitative baseline data on uranium levels in coastal Antarctic nototheniids. While the low levels recorded are unlikely to represent a threat within the food chain, we suggest that further long-term trophic studies (including stable isotope analysis) are needed, recognising that the feeding ecology of individual species (and even individuals) can have a strong effect on overall trends. Workplace Institute of Vertebrate Biology Contact Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524 Year of Publishing 2019
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