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Four eyes match better than two : Sharing of precise patch-use time among socially foraging domestic chicks

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Title: Four eyes match better than two : Sharing of precise patch-use time among socially foraging domestic chicks
Authors: Xin, Qiuhong Browse this author
Ogura, Yukiko Browse this author
Matsushima, Toshiya Browse this author →KAKEN DB
Keywords: Collective intelligence
Ideal free distribution
Matching behaviour
Social facilitation
Social foraging
Issue Date: Jul-2017
Publisher: Elsevier
Journal Title: Behavioural processes
Volume: 140
Start Page: 127
End Page: 132
Publisher DOI: 10.1016/j.beproc.2017.04.020
PMID: 28473251
Abstract: To examine how resource competition contributes to patch-use behaviour, we examined domestic chicks foraging in an I-shaped maze equipped with two terminal feeders. In a variable interval schedule, one feeder supplied grains three times more frequently than the other, and the sides were reversed midway through the experiment. The maze was partitioned into two lanes by a transparent wall, so that chicks fictitiously competed without actual interference. Stay time at feeders was compared among three groups. The "single" group contained control chicks; the "pair" group comprised the pairs of chicks tested in the fictitious competition; "mirror" included single chicks accompanied by their respective mirror images. Both "pair" and "mirror" chicks showed facilitated running. In terms of the patch-use ratio, "pair" chicks showed precise matching at approximately 3:1 with significant mutual dependence, whereas "single" and "mirror" chicks showed a comparable under-matching. The facilitated running increased visits to feeders, but failed to predict the patch-use ratio of the subject. At the reversal, quick switching occurred similarly in all groups, but the "pair" chicks revealed a stronger memory-based matching. Perceived competition therefore contributes to precise matching and lasting memory of the better feeder, in a manner dissociated from socially facilitated food search.
Rights: © 2017 This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Type: article (author version)
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 松島 俊也

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