Assessment of Scale-Loss to Atlantic Salmon (Salmo Salar L.) Smolts from Passage Through an Archimedean Screw Turbine

Brackley, R., Bean, C. , Lucas, M., Thomas, R. and Adams, C. (2016) Assessment of Scale-Loss to Atlantic Salmon (Salmo Salar L.) Smolts from Passage Through an Archimedean Screw Turbine. In: 11th International Symposium on Ecohydraulics (ISE 2016), Melbourne, Australia, 07-12 Feb 2016, ISBN 9780734053398

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Abstract

The potential for external damage to Atlantic salmon (Salmo salar L.) smolts from passage through an Archimedean screw turbine was tested with controlled field trials at two turbine speeds. Change in external condition of smolts was measured by grading photographs of individual fish for scale-loss before and after the tests. Results were compared between turbine-passed and control smolts. There were no significant differences in proportions of fish with new scale-loss between treatment and control smolts. New scale-loss of between 4 and 30% was seen in 7.46% of turbine-passed smolts, exceeding the prevalence in control smolts by 2.46%. Of these, 1.49% had minor scale-loss of 5-9%. Minor scale-loss was more prevalent for both groups at the faster turbine speed, although differences between treatment and control groups were more apparent at the slower speed.

Item Type:Conference Proceedings
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Adams, Professor Colin and Thomas, Dr Rhian and Brackley, Robert and Bean, Professor Colin
Authors: Brackley, R., Bean, C., Lucas, M., Thomas, R., and Adams, C.
Subjects:Q Science > Q Science (General)
College/School:College of Science and Engineering > School of Geographical and Earth Sciences > Geography
College of Medical Veterinary and Life Sciences > Institute of Biodiversity Animal Health and Comparative Medicine
ISBN:9780734053398
Copyright Holders:Copyright © 2016 The Authors
First Published:First published in Proceedings of the 11th International Symposium on Ecohydraulics. Melbourne, Australia, 7-12 February 2016
Publisher Policy:Reproduced under a Creative Commons license

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