Radiographic characterisation of spinal curvature development in farmed New Zealand Chinook salmon Oncorhynchus tshawytscha throughout seawater production

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dc.contributor.author Lovett, BA
dc.contributor.author Firth, EC
dc.contributor.author Tuck, ID
dc.contributor.author Symonds, JE
dc.contributor.author Walker, SP
dc.contributor.author Perrott, MR
dc.contributor.author Davie, PS
dc.contributor.author Munday, JS
dc.contributor.author Preece, MA
dc.contributor.author Herbert, NA
dc.date.accessioned 2020-12-08T01:55:47Z
dc.date.available 2020-12-08T01:55:47Z
dc.date.issued 2020-12-1
dc.identifier.citation Scientific reports 10(1):20039 18 Nov 2020
dc.identifier.issn 2045-2322
dc.identifier.uri http://hdl.handle.net/2292/53797
dc.description.abstract <jats:title>Abstract</jats:title><jats:p>Spinal anomalies are a recognised source of downgrading in finfish aquaculture, but identifying their cause(s) is difficult and often requires extensive knowledge of the underlying pathology. Late-onset spinal curvatures (lordosis, kyphosis, scoliosis) can affect up to 40% of farmed New Zealand Chinook (king) salmon (<jats:italic>Oncorhynchus tshawytscha</jats:italic>) at harvest, but little is known about their pathogenesis. Curvature development was radiographically documented in two related cohorts of commercially-farmed Chinook salmon throughout seawater production to determine (1) the timing of radiographic onset and relationships between (2) the curvature types, (3) the spinal regions in which they develop and (4) their associations with co-existing vertebral body anomalies (vertebral compression, fusion and vertical shift). Onset of curvature varied between individuals, but initially occurred eight months post-seawater transfer. There were strong associations between the three curvature types and the four recognised spinal regions: lordosis was predominantly observed in regions (R)1 and R3, kyphosis in R2 and R4, manifesting as a distinct pattern of alternating lordosis and kyphosis from head to tail. This was subsequently accompanied by scoliosis, which primarily manifested in spinal regions R2 and R3, where most of the anaerobic musculature is concentrated. Co-existing vertebral body anomalies, of which vertebral compression and vertical shift were most common, appeared to arise either independent of curvature development or as secondary effects. Our results suggest that spinal curvature in farmed New Zealand Chinook salmon constitutes a late-onset, rapidly-developing lordosis–kyphosis–scoliosis (LKS) curvature complex with a possible neuromuscular origin.</jats:p>
dc.language en
dc.publisher Springer Science and Business Media LLC
dc.relation.ispartofseries Scientific Reports
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher.
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm
dc.rights.uri https://creativecommons.org/licenses/by/4.0/
dc.title Radiographic characterisation of spinal curvature development in farmed New Zealand Chinook salmon Oncorhynchus tshawytscha throughout seawater production
dc.type Journal Article
dc.identifier.doi 10.1038/s41598-020-77121-y
pubs.issue 1
pubs.begin-page 20039
pubs.volume 10
dc.date.updated 2020-11-25T18:41:58Z
dc.rights.holder Copyright: The author en
pubs.publication-status Published online
dc.rights.accessrights http://purl.org/eprint/accessRights/OpenAccess en
pubs.subtype Journal Article
pubs.elements-id 828470
dc.identifier.eissn 2045-2322
pubs.number 20039
pubs.online-publication-date 2020-11-18


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