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dc.contributor.authorPankhurst, NW
dc.contributor.authorFitzgibbon, QP
dc.contributor.editorE.Donaldson
dc.date.accessioned2017-05-03T15:20:51Z
dc.date.available2017-05-03T15:20:51Z
dc.date.issued2006
dc.identifier.issn0044-8486
dc.identifier.doi10.1016/j.aquaculture.2005.01.014
dc.identifier.urihttp://hdl.handle.net/10072/20700
dc.description.abstractCultured stocks of 2nd generation 2+ year old greenback flounder Rhombosolea tapirina were maintained at low density and under conditions of minimal disturbance over 4 reproductive seasons. Natural in-tank spawning began in the second year after introduction in 2 separate tank systems and continued for 3 successive seasons until the experiment was terminated. Video records showed spawning on 5 out of 34 days on which filming occurred, with spawning behaviour consisting of approach and courting of an ovulated female by a male, followed by a circular paired swim in mid-water culminating in egg release. Spawning was concentrated in austral winter and spring in all 3 study years. In the first year, spawning episodes were strongly correlated with lunar phase (new moon), whereas in years 2 and 3, initiation of substantive spawning for the season coincided with the new moon but there was little evidence of lunar synchronisation thereafter. Volumes of eggs produced and egg fertility were highly variable and not clearly related to season. Most spawning events occurred between midnight and 07:30 h, with the majority between 04:00 and 06:00 h (~2 h before sunrise). The results of the present study further emphasize the utility of low disturbance maintenance for the development of naturally spawning cultured broodstock, and suggest that wild stocks are likely to show pre-dawn spawning in winter and spring, possibly synchronised to lunar phase.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoen_US
dc.publisherElsevier
dc.publisher.placeSan Diego
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom279
dc.relation.ispartofpageto289
dc.relation.ispartofissue1-4
dc.relation.ispartofjournalAquaculture
dc.relation.ispartofvolume253
dc.rights.retentionY
dc.subject.fieldofresearchFisheries Sciences
dc.subject.fieldofresearchZoology
dc.subject.fieldofresearchcode0704
dc.subject.fieldofresearchcode0608
dc.titleCharacteristics of spawning behaviour in cultured greenback flounder Rhombosolea tapirina.
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.date.issued2015-02-12T04:22:48Z
gro.hasfulltextNo Full Text
gro.griffith.authorPankhurst, Ned W.


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