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Comparison of damage to live v. euthanized Atlantic salmon Salmo salar smolts from passage through an Archimedean screw turbine

Brackley, R.; Lucas, M.C.; Thomas, R.; Adams, C.E.; Bean, C.W.

Comparison of damage to live v. euthanized Atlantic salmon Salmo salar smolts from passage through an Archimedean screw turbine Thumbnail


Authors

R. Brackley

R. Thomas

C.E. Adams

C.W. Bean



Abstract

This study assessed the usefulness of passing euthanized Atlantic salmon Salmo salar smolts through an Archimedean screw turbine to test for external damage, as compared with live, actively swimming smolts. Scale loss was the only observed effect. Severe scale loss was 5·9 times more prevalent in euthanized turbine‐passed fish (45%) than the live fish (7·6%). Additionally, distinctive patterns of scale loss, consistent with grinding between the turbine helices and housing trough, were observed in 35% of euthanized turbine‐passed smolts. This distinctive pattern of scale loss was not seen in live turbine‐passed smolts, nor in control groups (live and euthanized smolts released downstream of the turbine), which suggests that the altered behaviour of dead fish in turbine flows generates biased injury outcomes.

Citation

Brackley, R., Lucas, M., Thomas, R., Adams, C., & Bean, C. (2018). Comparison of damage to live v. euthanized Atlantic salmon Salmo salar smolts from passage through an Archimedean screw turbine. Journal of Fish Biology, 92(5), 1635-1644. https://doi.org/10.1111/jfb.13596

Journal Article Type Article
Acceptance Date Feb 15, 2018
Online Publication Date Mar 14, 2018
Publication Date May 1, 2018
Deposit Date Mar 10, 2018
Publicly Available Date Mar 28, 2024
Journal Journal of Fish Biology
Print ISSN 0022-1112
Electronic ISSN 1095-8649
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 92
Issue 5
Pages 1635-1644
DOI https://doi.org/10.1111/jfb.13596

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Accepted Journal Article (320 Kb)
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Copyright Statement
This is the accepted version of the following article: Brackley, R., Lucas, M.C., Thomas, R., Adams, C.E. & Bean, C.W. (2018). Comparison of damage to live v. euthanized Atlantic salmon Salmo salar smolts from passage through an Archimedean screw turbine. Journal of Fish Biology 92(5): 1635-1644, which has been published in final form at https://doi.org/10.1111/jfb.13596. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.





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