A note on alarm cues in juvenile African catfish, Clarias gariepinus Burchell: Indications for opposing behavioural strategies |
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Authors: | Pascal G van de Nieuwegiessen Johan W Schrama Johan AJ Verreth |
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Institution: | aAquaculture and Fisheries Group, Wageningen University, PO Box 338, 6700 AH Wageningen, The Netherlands |
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Abstract: | Following exposure of African catfish to alarm cues, a relationship (rp = 0.60, N = 10, P = 0.07) between feed efficiency (measured as residual feed intake) and the change in percentage of time spent swimming in response to damage-released alarm cues was observed. Feed-efficient animals responded with a decrease in percentage of time spent swimming (P < 0.05) whereas feed-inefficient animals responded with an increase in percentage of time spent swimming (P < 0.05). This study shows opposing behavioural strategies in African catfish in response to damage-released alarm cues being related to feeding efficiency. |
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Keywords: | Individual variation Alarm cue Behaviour Feed efficiency African catfish |
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