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Branchial osmoregulatory response to salinity in the gilthead sea bream,Sparus auratus

2005Journal article Restricted access
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dc.contributor.authorLaiz-Carrión, R.
dc.contributor.authorGuerreiro, P. M.
dc.contributor.authorFuentes, J.
dc.contributor.authorCanario, Adelino V. M.
dc.contributor.authorMartín Del Río, María P.
dc.contributor.authorMancera, J. M.
dc.date.accessioned2014-05-10T10:25:28Z
dc.date.available2014-05-10T10:25:28Z
dc.date.issued2005
dc.date.updated2014-05-09T08:53:39Z
dc.description.abstractThe branchial osmoregulatory response of gilthead sea bream (Sparus auratus L.) to short-term (2–192 hr) and long-term (2 weeks) exposure to different environmental salinities (5%, 15%, 25%, 38% and 60%) was investigated. A ‘‘U-shaped’’ relationship was observed between environmental salinity and gill Naþ,Kþ-ATPase activity in both long- and short-term exposure to altered salinity, with the increase in activity occurring between 24 and 96 hr after the onset of exposure. Plasma osmolality and plasma ions (sodium, chloride, calcium and potassium) showed a tendency to increase in parallel with salinity. These variables only differed significantly (Po0.05) in fish adapted to 60% salinity with respect to fish adapted to full-strength sea-water (SW). Plasma glucose remained unchanged whereas plasma lactate was elevated at 5% and 60%. Muscle water content (MWC) was significantly lower in fish adapted to 60%. Chloride cells (CC) were only present on the surface of the gill filaments and absent from the secondary lamellae. CC distribution was not altered by external salinity. However, the number and size of CC were significantly increased at salinity extremes (5% and 60%), whereas fish exposed to intermediate salinities (15% and 25%) had fewer and smaller cells. Furthermore, the CC of fish exposed to diluted SW became rounder whereas they were more elongated in fish in full-strength and hypersaline SW. This is consistent with previous reports indicating the existence of two CC types in euryhaline fish. At likely environmental salinities, gilthead sea bream show minor changes in plasma variables and the effective regulation of gill Naþ,Kþ-ATPase. However, at very low salinities both haemodilution and up-regulation of gill Naþ,Kþ-ATPase predict a poor adaptation most likely related to deficiency or absence of specific components of the CC important for ion uptake.por
dc.identifier.citationLaiz-Carrión, Raúl; Guerreiro, Pedro M.; Fuentes, Juan; Canario, Adelino V.M.; Martín Del Río, María P.; Mancera, Juan M.Branchial osmoregulatory response to salinity in the gilthead sea bream,Sparus auratus, Journal of Experimental Zoology Part A: Comparative Experimental Biology, 303A, 7, 563-576, 2005por
dc.identifier.issn1548-8969
dc.identifier.otherAUT: ACA00258
dc.identifier.urihttp://hdl.handle.net/10400.1/3847
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherWiley-Blackwellpor
dc.titleBranchial osmoregulatory response to salinity in the gilthead sea bream,Sparus auratuspor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage576por
oaire.citation.startPage563por
oaire.citation.titleJournal of Experimental Zoology Part A: Comparative Experimental Biologypor
person.familyNameGuerreiro da Costa Guerreiro
person.familyNameFuentes
person.familyNameCanario
person.givenNamePedro Miguel
person.givenNameJuan
person.givenNameAdelino
person.identifierA-2539-2009
person.identifier392998
person.identifier143624
person.identifier.ciencia-id5C13-965D-3148
person.identifier.ciencia-id421B-E196-2C33
person.identifier.ciencia-id1F1E-D3B3-F804
person.identifier.orcid0000-0001-5371-7919
person.identifier.orcid0000-0003-0430-8734
person.identifier.orcid0000-0002-6244-6468
person.identifier.ridC-7942-2009
person.identifier.scopus-author-id7201832526
person.identifier.scopus-author-id56568523700
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationd0a8a148-98e7-4899-8fb0-0b8afa91e4a4
relation.isAuthorOfPublicationd354b937-b18c-4ca5-a843-04a04269d60f
relation.isAuthorOfPublication5f6e51ee-9113-469e-8b9e-f30f2d452521
relation.isAuthorOfPublication.latestForDiscovery5f6e51ee-9113-469e-8b9e-f30f2d452521

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