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Trail geometry gives polarity to ant foraging networks

Jackson, D.E ; Holcombe, M ; Ratnieks, F.L.W

Nature, 2004-12, Vol.432 (7019), p.907-909 [Periódico revisado por pares]

London: Nature Publishing

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Título:
Trail geometry gives polarity to ant foraging networks
Autor: Jackson, D.E ; Holcombe, M ; Ratnieks, F.L.W
Assuntos: Animal behavior ; Animal ethology ; Animals ; ant trail geometry ; Ants - physiology ; Biological and medical sciences ; Cues ; Feeding Behavior - physiology ; foraging ; Formicidae ; Fundamental and applied biological sciences. Psychology ; Glass ; insect behavior ; Insects ; Locomotion - physiology ; Monomorium pharaonis ; Navigation ; Orientation - physiology ; pheromone trail networks ; Pheromones - physiology ; Protozoa. Invertebrata ; Psychology. Psychoanalysis. Psychiatry ; trail pheromones ; Trails
É parte de: Nature, 2004-12, Vol.432 (7019), p.907-909
Notas: ObjectType-Article-2
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Descrição: Pheromone trails are used by many ants to guide foragers between nest and food. But how does a forager that has become displaced from a trail know which way to go on rejoining the trail? A laden forager, for example, should walk towards the nest. Polarized trails would enable ants to choose the appropriate direction, thereby saving time and reducing predation risk. However, previous research has found no evidence that ants can detect polarity from the pheromone trail alone. Pharaoh's ants (Monomorium pharaonis) produce elaborate trail networks throughout their foraging environment. Here we show that by using information from the geometry of trail bifurcations within this network, foragers joining a trail can adaptively reorientate themselves if they initially walk in the wrong direction. The frequency of correct reorientations is maximized when the trail bifurcation angle is approximately 60 degrees, as found in natural networks. These are the first data to demonstrate how ant trails can themselves provide polarity information. They also demonstrate previously unsuspected sophistication in the organization and information content of networks in insect societies.
Editor: London: Nature Publishing
Idioma: Inglês

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Trail geometry gives polarity to ant foraging networks

Jackson, D.E ; Holcombe, M ; Ratnieks, F.L.W

London: Nature Publishing

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