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Durham Research Online
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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. and Lucas, M.C. and Thomas, R. and Adams, C.E. and 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). pp. 1635-1644.

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.

Item Type:Article
Full text:(AM) Accepted Manuscript
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1111/jfb.13596
Publisher 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.
Date accepted:15 February 2018
Date deposited:12 March 2018
Date of first online publication:14 March 2018
Date first made open access:14 March 2019

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