Ocean acidification modulates the incorporation of radio-labeled heavy metals in the larvae of the Mediterranean sea urchin Paracentrotus lividus

Dorey, N; Martin, S; Oberhänsli, F; Teyssié, JL; Jeffree, R; Lacoue-Labarthe, T

Ocean acidification modulates the incorporation of radio-labeled heavy metals in the larvae of the Mediterranean sea urchin Paracentrotus lividus

Dorey, N Martin, S Oberhänsli, F Teyssié, JL Jeffree, R Lacoue-Labarthe, T

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Publication Type:: Journal Article
Citation:: Journal of Environmental Radioactivity, 2018, 190-191 pp. 20 - 30
Issue Date:: 2018-10-01

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Field	Value	Language
dc.contributor.author	Dorey, N	en_US
dc.contributor.author	Martin, S	en_US
dc.contributor.author	Oberhänsli, F	en_US
dc.contributor.author	Teyssié, JL	en_US
dc.contributor.author	Jeffree, R	en_US
dc.contributor.author	Lacoue-Labarthe, T	en_US
dc.date.available	2018-04-18	en_US
dc.date.issued	2018-10-01	en_US
dc.identifier.citation	Journal of Environmental Radioactivity, 2018, 190-191 pp. 20 - 30	en_US
dc.identifier.issn	0265-931X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/130754
dc.description.abstract	© 2018 Elsevier Ltd The marine organisms which inhabit the coastline are exposed to a number of anthropogenic pressures that may interact. For instance, the accumulation of toxic metals present in coastal waters is expected to be modified by ocean acidification through e.g. changes in physiological performance and/or elements availability. Changes in bioaccumulation due to lowering pH are likely to be differently affected depending on the nature (essential vs. non-essential) and speciation of each element. The Mediterranean is of high concern for possible cumulative effects due to strong human influences on the coastline. The aim of this study was to determine the effect of ocean acidification (from pH 8.1 down to −1.0 pH units) on the incorporation kinetics of six trace metals (Mn, Co, Zn, Se, Ag, Cd, Cs) and one radionuclide (241Am) in the larvae of an economically- and ecologically-relevant sea urchin of the Mediterranean coastline: Paracentrotus lividus. The radiolabelled metals and radionuclides added in trace concentrations allowed precise tracing of their incorporation in larvae during the first 74 h of their development. Independently of the expected indirect effect of pH on larval size/developmental rates, Paracentrotus lividus larvae exposed to decreasing pHs incorporated significantly more Mn and Ag and slightly less Cd. The incorporation of Co, Cs and 241Am was unchanged, and Zn and Se exhibited complex incorporation behaviors. Studies such as this are necessary prerequisites to the implementation of metal toxicity mitigation policies for the future ocean. We discuss possible reasons and mechanisms for the specific effect of pH on each metals.	en_US
dc.relation.ispartof	Journal of Environmental Radioactivity	en_US
dc.relation.isbasedon	10.1016/j.jenvrad.2018.04.017	en_US
dc.subject.classification	Environmental Sciences	en_US
dc.subject.mesh	Animals	en_US
dc.subject.mesh	Paracentrotus	en_US
dc.subject.mesh	Metals, Heavy	en_US
dc.subject.mesh	Water Pollutants, Chemical	en_US
dc.subject.mesh	Seawater	en_US
dc.subject.mesh	Environmental Monitoring	en_US
dc.subject.mesh	Larva	en_US
dc.subject.mesh	Oceans and Seas	en_US
dc.subject.mesh	Mediterranean Sea	en_US
dc.title	Ocean acidification modulates the incorporation of radio-labeled heavy metals in the larvae of the Mediterranean sea urchin Paracentrotus lividus	en_US
dc.type	Journal Article
utslib.citation.volume	190-191	en_US
utslib.for	0305 Organic Chemistry	en_US
utslib.for	0501 Ecological Applications	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	05 Environmental Sciences	en_US
utslib.for	06 Biological Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	190-191	en_US

Abstract:

© 2018 Elsevier Ltd The marine organisms which inhabit the coastline are exposed to a number of anthropogenic pressures that may interact. For instance, the accumulation of toxic metals present in coastal waters is expected to be modified by ocean acidification through e.g. changes in physiological performance and/or elements availability. Changes in bioaccumulation due to lowering pH are likely to be differently affected depending on the nature (essential vs. non-essential) and speciation of each element. The Mediterranean is of high concern for possible cumulative effects due to strong human influences on the coastline. The aim of this study was to determine the effect of ocean acidification (from pH 8.1 down to −1.0 pH units) on the incorporation kinetics of six trace metals (Mn, Co, Zn, Se, Ag, Cd, Cs) and one radionuclide (241Am) in the larvae of an economically- and ecologically-relevant sea urchin of the Mediterranean coastline: Paracentrotus lividus. The radiolabelled metals and radionuclides added in trace concentrations allowed precise tracing of their incorporation in larvae during the first 74 h of their development. Independently of the expected indirect effect of pH on larval size/developmental rates, Paracentrotus lividus larvae exposed to decreasing pHs incorporated significantly more Mn and Ag and slightly less Cd. The incorporation of Co, Cs and 241Am was unchanged, and Zn and Se exhibited complex incorporation behaviors. Studies such as this are necessary prerequisites to the implementation of metal toxicity mitigation policies for the future ocean. We discuss possible reasons and mechanisms for the specific effect of pH on each metals.

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http://hdl.handle.net/10453/130754