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	Author	Griffiths,S. W.; Brockmark, S.; Höjesjö,J.; Johnsson,J. I.
	Title	Coping with divided attention: the advantage of familiarity			Type	Journal Article
	Year	2004	Publication	Proceedings of the Royal Society B: Biological Sciences	Abbreviated Journal	Proc. Roy. Soc. Lond. B Biol. Sci.
	Volume	271	Issue	1540	Pages	695-699
	Keywords
	Abstract	The ability of an animal to perform a task successfully is limited by the amount of attention being simultaneously focused on other activities. One way in which individuals might reduce the cost of divided attention is by preferentially focusing on the most beneficial tasks. In territorial animals where aggression is lower among familiar individuals, the decision to associate preferentially with familiar conspecifics may therefore confer advantages by allowing attention to be switched from aggression to predator vigilance and feeding. Wild juvenile brown trout were used to test the prediction that familiar fishes respond more quickly than unfamiliar fishes to a simulated predator attack. Our results confirm this prediction by demonstrating that familiar trout respond 14% faster than unfamiliar individuals to a predator attack. The results also show that familiar fishes consume a greater number of food items, foraging at more than twice the rate of unfamiliar conspecifics. To the best of our knowledge, these results provide the first evidence that familiarity–biased association confers advantages through the immediate fitness benefits afforded by faster predator–evasion responses and the long–term benefits provided by increased feeding opportunities.
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	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes	10.1098/rspb.2003.2648			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	5007
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