Programmed acoustic tags reveal novel information on late-phase marine life in Atlantic salmon, Salmo salar.
J Fish Biol
; 102(3): 707-711, 2023 Mar.
Article
en En
| MEDLINE
| ID: mdl-36562572
ABSTRACT
This pilot study used programmed acoustic tags implanted into Salmo salar smolts, in conjunction with an extensive offshore marine receiver array, to investigate late-stage 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.
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MEDLINE
Asunto principal:
Salmo salar
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En
Revista:
J Fish Biol
Año:
2023
Tipo del documento:
Article