Locomotory activity is more consistent over time than thigmotaxis and aggressive behavior in sea-ranched Baltic salmon (Salmo salar L.)
Axling, J. M.; Petersson, E.; Winberg, S.
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The behavioral differences, individually but also on group level has been evaluated in Baltic salmon parr in a repeated test combining open field and mirror test with focus on aggressive, bold and active behavior. The 164 salmon parr was tested twice and distance moved in arena, activity, was the variable which had the highest correlation between the trials. No correlation was found between aggression and activity or between boldness and activity. The groups which expressed lower aggression had a larger variance in their behavior compared to the highly aggressive groups which had a very strict behavioral repertoire.
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