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Main Title: Guppies Prefer to Follow Large (Robot) Leaders Irrespective of Own Size
Author(s): Bierbach, David
Mönck, Hauke J.
Lukas, Juliane
Habedank, Marie
Romanczuk, Pawel
Landgraf, Tim
Krause, Jens
Type: Article
Language Code: en
Abstract: Body size is often assumed to determine how successfully an individual can lead others with larger individuals being better leaders than smaller ones. But even if larger individuals are more readily followed, body size often correlates with specific behavioral patterns and it is thus unclear whether larger individuals are more often followed than smaller ones because of their size or because they behave in a certain way. To control for behavioral differences among differentially-sized leaders, we used biomimetic robotic fish (Robofish) of different sizes. Live guppies (Poecilia reticulata) are known to interact with Robofish in a similar way as with live conspecifics. Consequently, Robofish may serve as a conspecific-like leader that provides standardized behaviors irrespective of its size. We asked whether larger Robofish leaders are preferentially followed and whether the preferences of followers depend on own body size or risk-taking behavior (“boldness”). We found that live female guppies followed larger Robofish leaders in closer proximity than smaller ones and this pattern was independent of the followers’ own body size as well as risk-taking behavior. Our study shows a “bigger is better” pattern in leadership that is independent of behavioral differences among differentially-sized leaders, followers’ own size and risk-taking behavior.
Issue Date: 15-May-2020
Date Available: 24-Jun-2020
DDC Class: 570 Biowissenschaften; Biologie
Subject(s): biomimetic robots
Poecilia reticulata
body size
robotic fish
Sponsor/Funder: DFG, 390523135, EXC 2002: Science of Intelligence (SCIoI)
Journal Title: Frontiers in Bioengineering and Biotechnology
Publisher: Frontiers Media S.A.
Publisher Place: Lausanne
Volume: 8
Article Number: 441
Publisher DOI: 10.3389/fbioe.2020.00441
EISSN: 2296-4185
Appears in Collections:EXC - SCIoI » Publications

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