Show simple item record

dc.contributor.authorAnderson, Kelli
dc.contributor.authorPankhurst, Ned
dc.contributor.authorKing, Harry
dc.contributor.authorElizur, Abigail
dc.date.accessioned2017-11-06T01:42:52Z
dc.date.available2017-11-06T01:42:52Z
dc.date.issued2017
dc.identifier.issn2167-8359
dc.identifier.doi10.7717/peerj.3898
dc.identifier.urihttp://hdl.handle.net/10072/351661
dc.description.abstractTasmanian Atlantic salmon (S. salar) broodstock can experience temperatures above 20 °C, which impairs reproductive development and inhibits ovulation. The present study investigated the prolonged use of gonadotropin releasing hormone analogue (GnRHa) during vitellogenesis as a means of maintaining endocrine function and promoting egg quality at elevated temperature in maiden and repeat spawning S. salar. GnRHa-treatment during vitellogenesis did not compensate for the negative effects of thermal challenge on the timing of ovulation, egg size, egg fertility or embryo survival in any fish maintained at 22 °C relative to 14 °C. The lack of effectiveness was reflected by the endocrine data, as plasma follicle stimulating hormone and luteinising hormone levels were not different between treated and untreated groups at 22 °C. Furthermore, plasma testosterone and E2 levels were unchanged in GnRHa-treated fish at 22 °C, and plasma levels were generally lower in both groups maintained at 22 °C relative to 14 °C. Transcription of vitellogenin, and zona pellucida B and C was not enhanced in GnRHa-treated fish relative to untreated fish at 22 °C, presumably due to observed suppression of plasma E2. These results indicate that thermal impairment of reproduction is likely to occur on multiple levels, and is difficult to overcome via hormonal manipulation.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherPeerJ
dc.relation.ispartofpagefrome3898-1
dc.relation.ispartofpagetoe3898-24
dc.relation.ispartofjournalPeerJ
dc.relation.ispartofvolume5
dc.subject.fieldofresearchFish Physiology and Genetics
dc.subject.fieldofresearchBiological Sciences
dc.subject.fieldofresearchMedical and Health Sciences
dc.subject.fieldofresearchcode070405
dc.subject.fieldofresearchcode06
dc.subject.fieldofresearchcode11
dc.titleEffects of GnRHa treatment during vitellogenesis on the reproductive physiology of thermally challenged female Atlantic salmon (Salmo salar)
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dcterms.licensehttp://creativecommons.org/licenses/by/4.0/
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© 2017 Anderson et al. This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
gro.hasfulltextFull Text
gro.griffith.authorPankhurst, Ned W.


Files in this item

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record