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Please use this identifier to cite or link to this item: http://hdl.handle.net/10445/4406

Title: Effects of amount of food on path selection in the transport network of an amoeboid organsim
Authors: Nakagaki, Toshiyuki
Saigusa, Tetsu
Tero, Atsushi
Kobayashi, Ryo
Abstract: We studied the effect of the size of food sources (FSs) presented to the true slime mould Physarum polycephalum on the tubular networks formed by the organism to absorb nutrient. The amount of plasmodium gathering at an FS was shown to be proportional to both the concentration of nutrient and the surface area of the FS. We presented two FSs to test which connection the organism selected in response to varying amounts of food and derived a simple rule for connection persistence: the longer connection collapses earlier. A mathematical model for tube selection in response to amount of food was derived and predicted our experimental findings regarding the choice of connection. When three FSs were presented to the organism, the longer tubes were also the first to collapse, explained by the relative probability of disconnection. The size of the FS is thus a key parameter determining network formation.
Research Achievement Classification: 原著論文/Original Paper
Type: Journal Article
Peer Review: あり/yes
Solo/Joint Author(s): 共著/joint
Published journal or presented
academic conference: 
Proceedings of Int. Symp. On Topological Aspects of Critical Systems and Networks
Spage: 94
Epage: 100
Date: 2007
Publisher: World Scientific Publishing Co.
Appears in Collections:Nakagaki Toshiyuki

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