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Adaptation to reduced salinity affects the olfactory sensitivity of Senegalese sole (Solea senegalensis Kaup 1858) to Ca2+ and Na+ but not amino acids

2009-08-15Journal article Open Access
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dc.contributor.authorVelez, Zélia
dc.contributor.authorHubbard, Peter
dc.contributor.authorBarata, E. N.
dc.contributor.authorCanario, Adelino V. M.
dc.date.accessioned2014-05-09T17:00:24Z
dc.date.available2014-05-09T17:00:24Z
dc.date.issued2009-08-15
dc.date.updated2014-05-07T11:26:32Z
dc.description.abstractThe Senegalese sole is a marine flatfish, which often penetrates into estuarine waters to feed. It cannot, however, survive in full freshwater. The current study investigated the effect of adaptation to low salinity (10‰) on olfactory responses to changes in environmental [Ca2+] and [Na+] and amino acids by the electro-encephalogram (EEG) recorded from the olfactory bulb. The sole showed olfactory responses to increases in environmental [Na+] and decreases in environmental [Ca2+]; sensitivity to Na+ was greater at 10‰ whereas sensitivity to Ca2+ was greater at 35‰. Decreased environmental [Na+] increased sensitivity to changes in [Ca2+] whereas increased environmental [Ca2+] decreased bulbar responses to changes in [Na+]. Sensitivity to amino acids was unaffected by external salinity. However, the absence of external Na+ strongly decreased bulbar responses to amino acids in fish adapted to 35‰ seawater but not in those at 10‰. The absence of external Ca2+ had no such effect at either salinity. This suggests that odorant-receptor binding and/or olfactory transduction is reliant on external Na+ (but not Ca2+) at higher salinities but the olfactory system is able to adapt to lower environmental [Na+]. Taken together, these results suggest that reductions of external salinity modulate olfactory sensitivity to environmental Ca2+ and Na+ but not amino acids. However, at low salinities, olfactory sensitivity to amino acids is maintained by decreasing reliance on external Na+.por
dc.identifier.citationVelez, Z.; Hubbard, P. C.; Barata, E. N.; Canario, A. V. M.Adaptation to reduced salinity affects the olfactory sensitivity of Senegalese sole (Solea senegalensis Kaup 1858) to Ca2+ and Na+ but not amino acids, Journal of Experimental Biology, 212, 16, 2532-2540, 2009.por
dc.identifier.doihttp://dx.doi.org/10.1242/jeb.030775
dc.identifier.issn0022-0949
dc.identifier.otherAUT: ACA00258
dc.identifier.urihttp://hdl.handle.net/10400.1/3843
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherThe Company of Biologistspor
dc.relation.publisherversionhttp://jeb.biologists.org/content/212/16/2532.full.pdf+htmlpor
dc.subjectOlfactionpor
dc.subjectCalciumpor
dc.subjectSodiumpor
dc.subjectSalinitypor
dc.subjectAmino acidpor
dc.subjectFlatfishpor
dc.titleAdaptation to reduced salinity affects the olfactory sensitivity of Senegalese sole (Solea senegalensis Kaup 1858) to Ca2+ and Na+ but not amino acidspor
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F16242%2F2004/PT
oaire.citation.endPage2540por
oaire.citation.issue16por
oaire.citation.startPage2532por
oaire.citation.titleThe Journal of Experimental Biologypor
oaire.citation.volume212por
oaire.fundingStreamSFRH
person.familyNameVelez
person.familyNameHubbard
person.familyNameBarata
person.familyNameCanario
person.givenNameZélia
person.givenNamePeter
person.givenNameEduardo Nuno
person.givenNameAdelino
person.identifier143624
person.identifier.ciencia-id4412-F95B-34A2
person.identifier.ciencia-id951F-BA4B-A21F
person.identifier.ciencia-id1F1E-D3B3-F804
person.identifier.orcid0000-0003-2761-4048
person.identifier.orcid0000-0002-3007-4647
person.identifier.orcid0000-0001-9714-5967
person.identifier.orcid0000-0002-6244-6468
person.identifier.ridM-5283-2013
person.identifier.ridB-2823-2008
person.identifier.ridB-2902-2010
person.identifier.ridC-7942-2009
person.identifier.scopus-author-id16176444400
person.identifier.scopus-author-id7005928467
person.identifier.scopus-author-id6602073256
person.identifier.scopus-author-id56568523700
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspor
rcaap.typearticlepor
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