M. Newton
The impact of a small-scale riverine obstacle on the upstream migration of Atlantic Salmon
Newton, M.; Dodd, J. A.; Barry, J.; Boylan, P.; Adams, C. E.
Abstract
The behaviour of returning Salmo salar (Linnaeus, 1758) approaching, and attempting to pass low-head weirs remains relatively unknown. A radio telemetry array was created at a low-head weir to enable the behaviour of S. salar (n = 120) to be observed as they approached and attempted to pass the barrier. The majority of fish successfully passed the barrier on their first or second attempt, some individuals required 11 attempts prior to successful passage occurring. Mean delay at the barrier per fish was 47.8 h (±SD 132.0 h), range 15 min to 31 days. Passage success on a fish’s initial attempt was significantly predicted by the amount of searching a fish undertook, fork length, and fat content. Fish were more likely to have a successful first passage attempt if it was smaller with a low fat content and exerted a greater effort in searching for a passage channel. Small-scale barriers cause delays and increased energy expenditure in migrating fish. Barriers may be creating an anthropogenic selection pressure for traits which enable passage success. The impact of a delay at a barrier and increased energy expenditure on reproduction and gonad development remains unknown but is likely to be negatively impacted by instream anthropogenic structures.
Citation
Newton, M., Dodd, J. A., Barry, J., Boylan, P., & Adams, C. E. (2018). The impact of a small-scale riverine obstacle on the upstream migration of Atlantic Salmon. Hydrobiologia, 806(1), 251-264. https://doi.org/10.1007/s10750-017-3364-3
Journal Article Type | Article |
---|---|
Acceptance Date | Aug 21, 2017 |
Online Publication Date | Sep 6, 2017 |
Publication Date | 2018-01 |
Deposit Date | Sep 3, 2019 |
Publicly Available Date | Sep 3, 2019 |
Journal | Hydrobiologia |
Print ISSN | 0018-8158 |
Electronic ISSN | 1573-5117 |
Publisher | BMC |
Peer Reviewed | Peer Reviewed |
Volume | 806 |
Issue | 1 |
Pages | 251-264 |
DOI | https://doi.org/10.1007/s10750-017-3364-3 |
Keywords | Upstream migration, Behaviour, Telemetry, Fish passage, Anthropogenic selection |
Public URL | http://researchrepository.napier.ac.uk/Output/1802861 |
Files
The impact of a small-scale riverine obstacle on the upstream migration of Atlantic Salmon
(1.5 Mb)
PDF
Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/
Copyright Statement
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/).
You might also like
Invasiveness risks of naked goby, Gobiosoma bosc, to North Sea transitional waters
(2022)
Journal Article
Downloadable Citations
About Edinburgh Napier Research Repository
Administrator e-mail: repository@napier.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2024
Advanced Search