Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/9353
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dc.contributor.authorTaylor, John-
dc.contributor.authorNeedham, M P-
dc.contributor.authorNorth, Ben P-
dc.contributor.authorMorgan, Alison L-
dc.contributor.authorThompson, Kimberly-
dc.contributor.authorMigaud, Herve-
dc.date.accessioned2018-04-11T04:05:34Z-
dc.date.issued2007-06-
dc.identifier.urihttp://hdl.handle.net/1893/9353-
dc.description.abstractWe investigated the effect of ploidy on osmoregulatory, stress and immune responses in non-smolting rainbow trout during saltwater adaptation. Sibling groups of diploid and triploid trout were acclimated in freshwater (FW) and then subjected to abrupt transfer to full strength (35 ppt) saltwater (SW) or back to FW. Fish were sampled pre-stress, and 1, 3, 6, 12, 24, 48, 72 and 168 h post-stress. Overall mortality in SW was less than 5% in either ploidy, with no mortality in FW. Significant elevations in plasma osmolality and gill ATPase were observed within 1-3 h of SW transfer, but retuned to basal levels within 72 h indicative of rapid saltwater adaptation and did not differ between ploidy. Furthermore, FW-SW transfer also caused significant and sustained elevations in total blood haemoglobin, plasma IGF-I, cortisol, glucose, total white blood cell counts, increased plasma but decreased mucus lysozyme, and enhanced head kidney macrophage respiratory burst activity. Conversely, FW-FW transfer evoked more transient and less elevated responses, more typical of primary and secondary responses to a single stressor. We conclude that the more elevated levels in these parameters are a function of saltwater adaptation as well as the generic stress response, and that this did not differ between ploidy. Strong positive correlations were found between plasma IGF-I and cortisol, and with osmolality, glucose and WBC, while a negative correlation was found with plasma lysozyme irrespective of ploidy. Overall, the current results suggest that triploidy does not affect the ability of non-smolting trout to adapt to full strength seawater under optimum conditions, and that the osmotic and stress response to such transfer is similar to diploids.en_UK
dc.language.isoen-
dc.publisherElsevier-
dc.relationTaylor J, Needham MP, North BP, Morgan AL, Thompson K & Migaud H (2007) The influence of ploidy on saltwater adaptation, acute stress response and immune function following seawater transfer in non-smolting rainbow trout, General and Comparative Endocrinology, 152 (2-3), pp. 314-325.-
dc.rightsThe publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.-
dc.subjectTriploiden_UK
dc.subjectSea water challengeen_UK
dc.subjectOsmoregulationen_UK
dc.subjectStressen_UK
dc.subjectImmune functionen_UK
dc.subjectRainbow trouten_UK
dc.titleThe influence of ploidy on saltwater adaptation, acute stress response and immune function following seawater transfer in non-smolting rainbow trouten_UK
dc.typeJournal Articleen_UK
dc.rights.embargodate2999-12-31T00:00:00Z-
dc.rights.embargoreasonThe publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work.-
dc.identifier.doihttp://dx.doi.org/10.1016/j.ygcen.2007.02.029-
dc.identifier.pmid17434169-
dc.citation.jtitleGeneral and Comparative Endocrinology-
dc.citation.issn0016-6480-
dc.citation.volume152-
dc.citation.issue2-3-
dc.citation.spage314-
dc.citation.epage325-
dc.citation.publicationstatusPublished-
dc.citation.peerreviewedRefereed-
dc.type.statusPublisher version (final published refereed version)-
dc.author.emailherve.migaud@stir.ac.uk-
dc.contributor.affiliationAquaculture-
dc.contributor.affiliationUniversity of Stirling-
dc.contributor.affiliationUniversity of Stirling-
dc.contributor.affiliationUniversity of Stirling-
dc.contributor.affiliationAquaculture-
dc.contributor.affiliationAquaculture-
dc.rights.embargoterms2999-12-31-
dc.rights.embargoliftdate2999-12-31-
dc.identifier.isi000247824000032-
Appears in Collections:Aquaculture Journal Articles

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