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Research article2009Peer reviewed

Riverine and early marine survival of stocked salmon smolts, Salmo salar L., descending the Testebo River, Sweden

Serrano, I.; Rivinoja, P.; Karlsson, L.; Larsson, S.


P>A combination of radio and acoustic telemetry was used to monitor the out-migration of hatchery-reared Atlantic salmon, Salmo salar L., in the River Testebo, its estuary and coastal system. As with many other Baltic rivers, the hydropower regulated River Testebo once had a self-sustaining salmon population that is now extinct. Substantial losses of smolts in the river (48-69%) and inner part of the estuary (43-47%) were found, but after leaving the estuary, the success of post-smolts moving out of the Bay was sufficiently high (83-89%) to conclude that habitat within the bay is not a factor limiting initial marine survival. The results suggest that hatchery-based recovery of a wild salmon population in the river will not be successful unless other actions, such as habitat improvement, are included.


Atlantic salmon; migration; smolt; stocking; tag

Published in

Fisheries Management and Ecology
2009, Volume: 16, number: 5, pages: 386-394

    UKÄ Subject classification

    Environmental Sciences related to Agriculture and Land-use

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