Comparative evaluation of sea-urchin larval stage sensitivity to ocean acidification

Comparative evaluation of sea-urchin larval stage sensitivity to ocean acidification

Author Passarelli, Marina Cunha Google Scholar
Cesar, Augusto Autor UNIFESP Google Scholar
Riba, Inmaculada Google Scholar
DelValls, Tomas Ángel Google Scholar
Abstract Changes in the marine carbonate system may affect various calcifying organisms. This study is aimed to compare the sensitivity of embryo-larval development of two species of sea urchins (Paracentrutos lividus and Lytechinus variegatus) collected and exposed to samples from different coastal zone (Spain and Brazil) to ocean acidification. The results showed that the larval stages are very sensitive to small changes in the seawater's pH. The larvae from P. lividus species showed to be more sensitive to acidified elutriate sediments than larvae from L variegatus sea urchin. Furthermore, this study has demonstrated that the CO2 enrichment in aquatic ecosystems cause changes on the mobility of the metals: Zn, Cu, Fe, Al and As, which was presented different behavior among them. Although an increase on the mobility of metals was found, the results using the principal component analysis showed that the pH reduction show the highest correlations with the toxicity and is the main cause of embryo-larval development inhibition. In this comparative study it is demonstrated that both species are able to assess potential effects of the ocean acidification related to CO2 enrichment by both near future scenarios and the risk associated with CO2 leakages in the Carbon Capture and Storage (CCS) process, and the importance of comparative studies in different zones to improve the understanding of the impacts caused by ocean acidification. (C) 2017 Elsevier Ltd. All rights reserved.
Keywords CO2 enrichment
Paracentrutos lividus
Lytechinus variegatus
Toxicity tests
Metal mobility
xmlui.dri2xhtml.METS-1.0.item-coverage Oxford
Language English
Sponsor international Grant from Santander Bank/UNESCO Chair UNITWIN/WiCop
Erasmus Mundus Program
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Ministry of Education in Spain through the Movilidad de Profesores en el Extranjero program
Grant number CNPq: 305869/2013-2
Date 2017
Published in Chemosphere. Oxford, v. 184, p. 224-234, 2017.
ISSN 0045-6535 (Sherpa/Romeo, impact factor)
Publisher Pergamon-Elsevier Science Ltd
Extent 224-234
Origin https://dx.doi.org/10.1016/j.chemosphere.2017.06.001
Access rights Closed access
Type Article
Web of Science ID WOS:000407525500027
URI https://repositorio.unifesp.br/handle/11600/57341

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