Is the level of aggression and dispersion in territorial fish dependent on light intensity?
Article Abstract:
Research describing the behavior of juvenile Atlantic salmon when exposed to varying light intensity is presented. It is shown that aggression and dispersion increased with increasing light intensity.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 2001
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Producers, scroungers and foraging group structure
Article Abstract:
The Barnard-Sibley model is followed and expanded into a game-theoretical approach model to see where producer-scrounger groups with equal payoffs fall under in character combinations of food-searching and food sharing. The model concerns single-species foraging groups. Using the expanded model, scroungers may be tolerated whenever the risk of being eaten by a predator is high relative to the cost of a resulting reduction in food intake, since the presence of scroungers in a foraging group tends to diminish the risk of predation for everyone.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1996
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Seasonal changes in sheltering: effect of light and temperature on diel activity in juvenile salmon
Article Abstract:
It has been shown that juvenile Atlantic salmon are mainly nocturnal in the winter but are predominantly diurnal during the summer. It is known that time, light and temperature determine patterns of activity. A new study investigates the effect of temperature and light on juvenile salmon and compares the behaviour of upper modal and lower modal fish groups. The study shows that most fish hide during the day at low temperatures, with some hiding at night. Rising temperatures decrease the likelihood of fish using the shelters. Upper modal group fish hid less than lower modal group fish, presumably due to their more advanced state of smolting.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1997
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