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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