Skeletal anomaly assessment in diploid and triploid juvenile Atlantic salmon (Salmo salar L.) and the effect of temperature in freshwater

Gianluca Amoroso; M B Adams; Tomer Ventura; C G Carter; Jennifer M Cobcroft

doi:10.1111/jfd.12438

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Skeletal anomaly assessment in diploid and triploid juvenile Atlantic salmon (Salmo salar L.) and the effect of temperature in freshwater

Journal article

Peer reviewed

Skeletal anomaly assessment in diploid and triploid juvenile Atlantic salmon (Salmo salar L.) and the effect of temperature in freshwater

Gianluca Amoroso, M B Adams, Tomer Ventura, C G Carter and Jennifer M Cobcroft

Journal of Fish Diseases, Vol.39(4), pp.449-466

2016

DOI: https://doi.org/10.1111/jfd.12438

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Abstract

aquaculture

Atlantic salmon

lower jaw deformity

opercular shortening

triploid

vertebral deformities

Triploid Atlantic salmon tend to develop a higher prevalence of skeletal anomalies. This tendency may be exacerbated by an inadequate rearing temperature. Early juvenile all-female diploid and triploid Atlantic salmon were screened for skeletal anomalies in consecutive experiments to include two size ranges: the first tested the effect of ploidy (0.2-8 g) and the second the effect of ploidy, temperature (14 °C and 18 °C) and their interaction (8-60 g). The first experiment showed that ploidy had no effect on skeletal anomaly prevalence. A high prevalence of opercular shortening was observed (average prevalence in both ploidies 85.8%) and short lower jaws were common (highest prevalence observed 11.3%). In the second experiment, ploidy, but not temperature, affected the prevalence of short lower jaw (diploids > triploids) and lower jaw deformity (triploids > diploids, highest prevalence observed 11.1% triploids and 2.7% diploids) with a trend indicating a possible developmental link between the two jaw anomalies in triploids. A radiological assessment (n = 240 individuals) showed that at both temperatures triploids had a significantly (P < 0.05) lower number of vertebrae and higher prevalence of deformed individuals. These findings (second experiment) suggest ploidy was more influential than temperature in this study.

Details

Title: Skeletal anomaly assessment in diploid and triploid juvenile Atlantic salmon (Salmo salar L.) and the effect of temperature in freshwater
Authors: Gianluca Amoroso (Author) - University of Tasmania
M B Adams (Author) - University of Tasmania
Tomer Ventura (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
C G Carter (Author) - University of Tasmania
Jennifer M Cobcroft (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Publication details: Journal of Fish Diseases, Vol.39(4), pp.449-466
Publisher: Wiley-Blackwell Publishing Ltd.
Date published: 2016
DOI: 10.1111/jfd.12438
ISSN: 0140-7775
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering; Centre for Bioinnovation
Language: English
Record Identifier: 99450196602621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Fisheries; Marine & Freshwater Biology; Veterinary Sciences