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Expression of pituitary prolactin, growth hormone and somatolactin is modified in response to different stressors (salinity, crowding and food-deprivation) in gilthead sea bream Sparus auratus

2009Journal article Restricted access
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dc.contributor.authorLaiz-Carrión, R.
dc.contributor.authorFuentes, J.
dc.contributor.authorRedruello, Begoña
dc.contributor.authorGuzmán, José M.
dc.contributor.authorRío, María P. Martín del
dc.contributor.authorPower, Deborah
dc.contributor.authorMancera, J. M.
dc.date.accessioned2014-10-22T13:41:20Z
dc.date.available2014-10-22T13:41:20Z
dc.date.issued2009
dc.description.abstractProlactin (PRL), growth hormone (GH) and somatolactin (SL) expression was studied in gilthead sea bream (Sparus auratus) in response to several different stressors (salinity, food deprivation or stocking density). In the first experiment, specimens were acclimated during 100 days at three different environmental salinities: low salinity water (LSW, 6 ppt), brackish water (BW, 12 ppt) and seawater (SW, 38 ppt). Osmoregulatory parameters corresponded to those previously reported for this species under similar osmotic conditions. Pituitary PRL expression increased with decreasing environmental salinity, and was significantly different between SW- and LSW-acclimated fish. Pituitary GH expression was similar between SW- and BW-acclimated fish but decreased in LSW-acclimated specimens. Pituitary SL expression had a ‘‘U-shaped” relationship to environmental salinity with the lowest expression in BW-acclimated fish. In a second experiment SW-acclimated specimens were randomly assigned to one of four treatments and maintained for 14 days: (1) fed fish under low density (LD, 4 kg m!3); (2) fed fish under high density (HD, 70 kg m!3); (3) food deprived fish under LD; and (4) food deprived fish under HD. Plasma glucose and cortisol levels corresponded to those previously reported in S. auratus under similar experimental conditions. Pituitary PRL and SL expression increased in fish maintained under HD and decreased in food deprived fish. In conclusion, an effect of environmental salinity on pituitary PRL and GH expression has been demonstrated. In addition, crowding stress seems to interact with food deprivation in S. auratus and this is reflected by changes in pituitary PRL, GH and SL expression levels.por
dc.description.sponsorshipThis work was supported by Grants BFU2004-04439-CO2-01B (Ministerio de Ciencia y Tecnología, Spain) and Financiamento Pluriannual to CCMAR (Ministerio de Ciencia e Tecnologia, Portugal). R.L.C. was funded by a predoctoral fellowship MIT-F2 (Ministerio de Ciencia y Tecnología, Spain) and B.R. was funded by postdoctoral fellowships (Fundação de Ciencia e Tecnologia, Portugal and EU, respectively). The authors thank ACUINOVA S.L. (San Fernando, Cádiz, Spain) and Planta de Cultivos Marinos (CASEM, Universidad de Cádiz, Puerto Real, Cádiz, Spain) for providing experimental fish and for the use of experimental facilities. The help of Dr. Jose Luis Soengas in cortisol analysis and of Dr. Lilia Brinca in densitometric analysis is also gratefully acknowledged.por
dc.identifier.citationRaúl Laiz-Carrión, Juan Fuentes, Begoña Redruello, José M. Guzmán, María P. Martín del Río, Deborah Power, Juan M. Mancera, "Expression of pituitary prolactin, growth hormone and somatolactin is modified in response to different stressors (salinity, crowding and food-deprivation) in gilthead sea bream Sparus auratus" in General and Comparative Endocrinology 162 (2009) 293–300.por
dc.identifier.doihttp://dx.doi.org/10.1016/j.ygcen.2009.03.026
dc.identifier.otherAUT: DPO00386;
dc.identifier.urihttp://hdl.handle.net/10400.1/5407
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.subjectFood deprivationpor
dc.subjectGHpor
dc.subjectOsmoregulationpor
dc.subjectPRLpor
dc.subjectSLpor
dc.subjectSea breampor
dc.subjectSparus auratuspor
dc.subjectStocking densitypor
dc.titleExpression of pituitary prolactin, growth hormone and somatolactin is modified in response to different stressors (salinity, crowding and food-deprivation) in gilthead sea bream Sparus auratuspor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage300por
oaire.citation.startPage293por
oaire.citation.titleGeneral and Comparative Endocrinologypor
oaire.citation.volume162por
person.familyNameFuentes
person.familyNameRedruello
person.familyNamePower
person.givenNameJuan
person.givenNameBegoña
person.givenNameDeborah Mary
person.identifier392998
person.identifier.ciencia-id421B-E196-2C33
person.identifier.ciencia-id891A-8A44-3CAE
person.identifier.orcid0000-0003-0430-8734
person.identifier.orcid0000-0003-1787-5594
person.identifier.orcid0000-0003-1366-0246
person.identifier.scopus-author-id7201832526
person.identifier.scopus-author-id7101806760
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
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relation.isAuthorOfPublication67798ebb-16f5-4974-8d52-5158ddf9fe53
relation.isAuthorOfPublicationc68f5ffb-63f6-4c70-8957-29e464fb59c0
relation.isAuthorOfPublication.latestForDiscoveryc68f5ffb-63f6-4c70-8957-29e464fb59c0

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