Effects of Thyroid Hormones on Behavior of Yearling Atlantic Salmon ( Salmo salar)
Swimming activity, aggressive behavior, and upstream orientation of yearling Atlantic salmon (Salmo salar) treated with 6.43 × 10 −11 M thyroxine were significantly lower than those of control fish injected with solvent alone. Two concentrations of triiodothyronine (7.43 × 10 −11 M; 7.43 × 10 −10 M)...
Published in: | Journal of the Fisheries Research Board of Canada |
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Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
1974
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Subjects: | |
Online Access: | http://dx.doi.org/10.1139/f74-227 http://www.nrcresearchpress.com/doi/pdf/10.1139/f74-227 |
Summary: | Swimming activity, aggressive behavior, and upstream orientation of yearling Atlantic salmon (Salmo salar) treated with 6.43 × 10 −11 M thyroxine were significantly lower than those of control fish injected with solvent alone. Two concentrations of triiodothyronine (7.43 × 10 −11 M; 7.43 × 10 −10 M) caused similar but less pronounced effects.Because similar behavioral modifications accompany smolt migration, we hypothesize that thyroid hormones may play a role in arousing migratory tendencies in Atlantic salmon. |
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