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The influence of high pCO2 on otolith shape, chemical and carbon isotope composition of six coastal fish species in a Mediterranean shallow CO2 vent

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dc.contributor.authorMirasole, Alice
dc.contributor.authorGillanders, Bronwyn May
dc.contributor.authorReis-Santos, Patrick
dc.contributor.authorGrassa, Fausto
dc.contributor.authorCapasso, Giorgio
dc.contributor.authorScopelliti, Giovanna
dc.contributor.authorMazzola, Antonio
dc.contributor.authorVizzini, Salvatrice
dc.date.accessioned2020-01-19T20:21:21Z
dc.date.available2020-01-19T20:21:21Z
dc.date.issued2017
dc.description.abstractNaturally acidified environments, such as CO2 vents, are important sites to evaluate the potential effects of increased ocean acidification on marine ecosystems and biota. Here we assessed the effect of high CO2/low pH on otolith shape and chemical composition of six coastal fish species (Chromis chromis, Coris julis, Diplodus vulgaris, Gobius bucchichi, Sarpa salpa, Symphodus ocellatus) in a Mediterranean shallow CO2 vent. Taking into consideration the major and trace elements found near the vent and the gradient of dissolved inorganic carbon, we compared the otolith chemical signatures of fish exposed long-term to elevated CO2 emissions and reduced pH (mean pH 7.8) against fish living in two control sites (mean pH 8.2). A number of element:Ca ratios (Na:Ca, Mg:Ca, Mn:Ca, Cu:Ca, Zn:Ca, Sr:Ca, Ba:Ca and Pb:Ca), along with isotope ratios, were measured in otoliths (δ13C and δ18O) and water (δ13CDIC) samples. Additionally, we performed otolith outline shape and morphometric analysis to evaluate the effect of high CO2/low pH. We observed species-specific responses with regards to both shape and chemical signatures. Significant differences among sites were found in otolith shape (elliptical Fourier descriptors) of G. bucchichi and D. vulgaris. Elemental and isotopic signatures were also significantly different in these site attached species, though not for the other four. Overall, the carbon isotopic composition seems a good proxy to follow pH gradient in naturally acidified area. Ultimately, besides improving our knowledge of the effects of high CO2/low pH on otoliths, the present results contribute to our understanding on their use as natural tags.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1007/s00227-017-3221-ypt_PT
dc.identifier.issn0025-3162
dc.identifier.urihttp://hdl.handle.net/10451/41161
dc.language.isoengpt_PT
dc.publisherSpringerpt_PT
dc.relation.publisherversionhttps://link.springer.com/article/10.1007%2Fs00227-017-3221-ypt_PT
dc.titleThe influence of high pCO2 on otolith shape, chemical and carbon isotope composition of six coastal fish species in a Mediterranean shallow CO2 ventpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue9pt_PT
oaire.citation.startPage191pt_PT
oaire.citation.titleMarine Biologypt_PT
oaire.citation.volume164pt_PT
person.familyNameReis-Santos
person.givenNamePatrick
person.identifierhttps://scholar.google.com/citations?user=bTjfoO8AAAAJ&hl=en
person.identifier.ciencia-id7310-4EA4-6F12
person.identifier.orcid0000-0001-9843-9465
person.identifier.scopus-author-id15835590000
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication59d5848d-65aa-4b84-b531-6984725a0477
relation.isAuthorOfPublication.latestForDiscovery59d5848d-65aa-4b84-b531-6984725a0477

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