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Environmental salinity modulates olfactory sensitivity in the euryhaline European seabass, Dicentrarchus labrax, acclimated to seawater and brackish water

2024-02-01Artigo científico Acesso aberto
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datacite.subject.sdg14:Proteger a Vida Marinha
datacite.subject.sdg13:Ação Climática
datacite.subject.sdg02:Erradicar a Fome
dc.contributor.authorVelez, Zélia
dc.contributor.authorHubbard, Peter
dc.contributor.authorCarvalho Alves, Alexandra
dc.contributor.authorCosta, Rita
dc.contributor.authorGuerreiro, Pedro
dc.date.accessioned2026-04-24T09:08:11Z
dc.date.available2026-04-24T09:08:11Z
dc.date.issued2024-02-01
dc.description.abstractThe olfactory epithelium of fish is – of necessity – in intimate contact with the surrounding water. In euryhaline fish, movement from seawater to freshwater (and vice versa) exposes the epithelium to massive changes in salinity and ionic concentrations. How does the olfactory system function in the face of such changes? The current study compared olfactory sensitivity in seawater- (35‰) and brackish water-adapted seabass (5‰) using extracellular multi-unit recording from the olfactory nerve. Seawater-adapted bass had higher olfactory sensitivity to amino acid odorants when delivered in seawater than in freshwater. Conversely, brackish water-adapted bass had largely similar sensitivities to the same odorants when delivered in seawater or freshwater, although sensitivity was still slightly higher in seawater. The olfactory system of seawater-adapted bass was sensitive to decreases in external [Ca2+], whereas brackish water-adapted bass responded to increases in [Ca2+]; both seawater- and brackish water-adapted bass responded to increases in external [Na+] but the sensitivity was markedly higher in brackish water-adapted bass. In seawater-adapted bass, olfactory sensitivity to L-alanine depended on external Ca2+ ions, but not Na+; brackish water-adapted bass did respond to L-alanine in the absence of Ca2+, albeit with lower sensitivity, whereas sensitivity was unaffected by removal of Na+ ions. A possible adaptation of the olfactory epithelium was the higher number of mucous cells in brackish water-adapted bass. The olfactory system of seabass is able to adapt to low salinities, but this is not immediate; further studies are needed to identify the processes involved.eng
dc.description.sponsorshipDL57/2016/CP1361/CT0041
dc.identifier.doi10.1242/jeb.246448
dc.identifier.eissn1477-9145
dc.identifier.issn0022-0949
dc.identifier.urihttp://hdl.handle.net/10400.1/28762
dc.language.isoeng
dc.peerreviewedyes
dc.publisherThe Company of Biologists
dc.relationAlgarve Centre for Marine Sciences
dc.relationAlgarve Centre for Marine Sciences
dc.relationOlfactory disruption in the Ria Formosa?
dc.relationCentre for Marine and Environmental Research
dc.relation.ispartofJournal of Experimental Biology
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectOlfaction
dc.subjectSalinity
dc.subjectOsmoregulation
dc.subjectCalcium
dc.subjectSodium
dc.subjectSeabass
dc.subjectAmino acids
dc.titleEnvironmental salinity modulates olfactory sensitivity in the euryhaline European seabass, Dicentrarchus labrax, acclimated to seawater and brackish watereng
dc.typejournal article
dspace.entity.typePublication
oaire.awardNumberUIDB/04326/2020
oaire.awardNumberUIDP/04326/2020
oaire.awardNumberEXPL/BIA-ECO/1161/2021
oaire.awardNumberLA/P/0101/2020
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleOlfactory disruption in the Ria Formosa?
oaire.awardTitleCentre for Marine and Environmental Research
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/EXPL%2FBIA-ECO%2F1161%2F2021/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0101%2F2020/PT
oaire.citation.issue3
oaire.citation.titleJournal of Experimental Biology
oaire.citation.volume227
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream3599-PPCDT
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameVelez
person.familyNameHubbard
person.familyNameCarvalho Alves
person.familyNameCosta
person.familyNameGuerreiro
person.givenNameZélia
person.givenNamePeter
person.givenNameAlexandra
person.givenNameRita
person.givenNamePedro
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person.identifier.orcid0000-0002-6975-7576
person.identifier.orcid0000-0001-7272-2000
person.identifier.ridM-5283-2013
person.identifier.ridB-2823-2008
person.identifier.ridO-9136-2018
person.identifier.ridL-1826-2017
person.identifier.scopus-author-id16176444400
person.identifier.scopus-author-id7005928467
person.identifier.scopus-author-id57097731700
person.identifier.scopus-author-id57205268716
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project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
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