The Effects of Light Intensity and Color on Aggressive Interactions in the Dusky Kob, Argyrosomus japonicus

Date
2011
Authors
Timmer, Rowan
Magellan, Kit
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Israeli Journal of Aquaculture - BAMIGDEH
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Abstract
The dusky kob, Argyrosomus japonicus, is highly susceptible to stress under culture conditions. Such stress frequently involves a high degree of aggression, leading to cannibalism. Here, the effects of light intensity and color on the frequency of aggressive interactions and the time that passes between presentation of food and food first being eaten (feeding latency) in this species were examined. Aggression was lowest when fish were maintained in partial shade and highest in red light. Feeding latency was not affected by light treatment. The results can aid the aquaculture industry in determining the optimal light intensity for minimizing aggressive behavior in A. japonicus.
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Keywords
aggression, Argyrosomus japonicus, cannibalism, dusky kob, light intensity, light color, Fish culture--Israel--Periodicals., Fish culture--Periodicals., Aquaculture--Israel--Periodicals., Aquaculture--Periodicals.
Citation
Rowan Timmer and Kit Magellan (2011). The Effects of Light Intensity and Color on Aggressive Interactions in the Dusky Kob, Argyrosomus japonicus. The Israeli Journal of Aquaculture - Bamidgeh, 63, 9 pp.
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9 pages
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