Migration success and migration time of gastrically radio‐tagged <i>v</i>. PIT‐tagged adult Atlantic salmon

Abstract

Adult Atlantic salmon (55–116 cm total length) with PIT‐tags ( n = 318) and both PIT‐tags and gastric radio‐tags ( n = 127) in a regulated river showed similar upstream migration success, yet radio‐tagged fish migrated faster than fish with only PIT‐tags. Regurgitation rate of radio‐tags was 9%.