First data on uranium uptake in three nototheniid fishes from Antarctica (James Ross Island)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F18%3A00491989" target="_blank" >RIV/68081766:_____/18:00491989 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.chemosphere.2018.07.195" target="_blank" >http://dx.doi.org/10.1016/j.chemosphere.2018.07.195</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.chemosphere.2018.07.195" target="_blank" >10.1016/j.chemosphere.2018.07.195</a>

Jazyk výsledku

angličtina

Název v původním jazyce

First data on uranium uptake in three nototheniid fishes from Antarctica (James Ross Island)

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

First data on uranium uptake in three nototheniid fishes from Antarctica (James Ross Island)

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

<a href="/cs/project/GBP505%2F12%2FG112" target="_blank" >GBP505/12/G112: ECIP - Evropské centrum ichtyoparazitologie</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Chemosphere

ISSN

0045-6535

e-ISSN

—

Svazek periodika

211

Číslo periodika v rámci svazku

November

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

5

Strana od-do

510-514

Kód UT WoS článku

000446149600054

EID výsledku v databázi Scopus

2-s2.0-85053209112