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

Citation

Amoroso, G and Adams, MB and Ventura, T and Carter, CG and Cobcroft, JM, Skeletal anomaly assessment in diploid and triploid juvenile Atlantic salmon (Salmo salar L.) and the effect of temperature in freshwater, Journal of Fish Diseases, 39, (4) pp. 449-466. ISSN 0140-7775 (2016) [Refereed Article]

Copyright Statement

Copyright 2016 John Wiley & Sons Ltd

DOI: doi:10.1111/jfd.12438

Abstract

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.

Item Details

Item Type:Refereed Article
Keywords:Altantic salmon, skeletal deformities, triploid, freshwater, temperature
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Aquaculture
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Aquaculture
Objective Field:Aquaculture Fin Fish (excl. Tuna)
Author:Amoroso, G (Mr Gianluca Amoroso)
Author:Adams, MB (Dr Mark Adams)
Author:Carter, CG (Professor Chris Carter)
Author:Cobcroft, JM (Dr Jennifer Cobcroft)
ID Code:106032
Year Published:2016
Web of Science® Times Cited:2
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2016-01-25
Last Modified:2016-12-01
Downloads:0

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