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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
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, Veterinary and Food 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) |
| UTAS Author: | Amoroso, G (Dr Gianluca Amoroso) |
| UTAS Author: | Adams, MB (Dr Mark Adams) |
| UTAS Author: | Carter, CG (Professor Chris Carter) |
| UTAS Author: | Cobcroft, JM (Dr Jennifer Cobcroft) |
| ID Code: | 106032 |
| Year Published: | 2016 |
| Web of Science® Times Cited: | 17 |
| Deposited By: | Sustainable Marine Research Collaboration |
| Deposited On: | 2016-01-25 |
| Last Modified: | 2017-11-03 |
| Downloads: | 0 |
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