Programmed acoustic tags reveal novel information on late-phase marine life in Atlantic salmon, Salmo salar
Date
2022-12-30
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Publisher
Wiley
Abstract
This pilot study used programmed acoustic tags implanted into Salmo salar smolts, in
conjunction with an extensive offshore marine receiver array, to investigate latestage
migratory behaviour and survival of returning adult salmon. A total of
100 smolts were tagged in 2020, and a number of individuals were successfully
detected as returning adults in 2021. After detection efficiency was accounted for,
5–9 adults were estimated to have returned to the offshore array c. 45 km from the
river mouth. A total of three fish were subsequently detected in the river. Losses of
between 40% and 66% were evident during the final stages of ocean migration, and
one tagged fish provided direct evidence of a predation event.
Description
Publication history: Accepted - 20 December 2022; Published online - 30 December 2022.
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Keywords
anadromy, marine survival, telemetry
Citation
Kennedy, R., Rosell, R., Hunter, E. and del Villar‐Guerra, D. (2022) ‘Programmed acoustic tags reveal novel information on late‐phase marine life in Atlantic salmon, <scp> Salmo salar </scp>’, Journal of Fish Biology. Wiley. Available at: https://doi.org/10.1111/jfb.15292.