Journal Article

Movements of non-maturing cultured Atlantic salmon (<i>Salmo salar</i>) in a Canadian river

J. W. Carr, G. L. Lacroix, J. M. Anderson and T. Dilworth

in ICES Journal of Marine Science

Published on behalf of ICES/CIEM

Volume 54, issue 6, pages 1082-1085
Published in print December 1997 | ISSN: 1054-3139
Published online December 1997 | e-ISSN: 1095-9289 | DOI: http://dx.doi.org/10.1016/S1054-3139(97)80012-4
Movements of non-maturing cultured Atlantic salmon (Salmo salar) in a Canadian river

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High numbers of non-maturing, cultured Atlantic salmon that escaped after one winter in sea-cages ascended into fresh water in the Magaguadavic River, New Brunswick. Acoustic telemetry was used to investigate the movements and behaviour of 14 of these fish in the river over the natural spawning period. Four of the fish remained in deep, slow areas within 1 km of the dam, five moved less than 10 km upstream, and five moved no further than 17.5 km. They then remained at these sites for the rest of the study. Thus, all fish failed to reach the known spawning areas located further upstream. It is presumed that the limited movement of the cultured fish was related to their failure to sexually mature. Why these non-maturing salmon entered fresh water remains unanswered, but their residence in the river could have ecological implications.

Keywords: Aquaculture interactions; Atlantic salmon; freshwater migration; Salmo salar; ultrasonic telemetry

Journal Article.  0 words. 

Subjects: Environmental Science ; Marine and Estuarine Biology

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