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Consensus of travel direction is achieved by simple copying, not voting, in free-ranging goats

D. W. E. Sankey, L. R. O'Bryan, S. Garnier, G. Cowlishaw, P. Hopkins, M. Holton, Ines Fuertbauer Orcid Logo, Andrew King Orcid Logo

Royal Society Open Science, Volume: 8, Issue: 2, Start page: 201128

Swansea University Authors: Ines Fuertbauer Orcid Logo, Andrew King Orcid Logo

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DOI (Published version): 10.1098/rsos.201128

Abstract

For group-living animals to remain cohesive they must agree on where to travel. Theoretical models predict shared group decisions should be favoured, and a number of empirical examples support this. However, the behavioural mechanisms that underpin shared decision-making are not fully understood. Gr...

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Published in: Royal Society Open Science
ISSN: 2054-5703
Published: The Royal Society 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa56075
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spelling 2024-10-17T16:23:45.0079090 v2 56075 2021-01-18 Consensus of travel direction is achieved by simple copying, not voting, in free-ranging goats f682ec95fa97c4fabb57dc098a9fdaaa 0000-0003-1404-6280 Ines Fuertbauer Ines Fuertbauer true false cc115b4bc4672840f960acc1cb078642 0000-0002-6870-9767 Andrew King Andrew King true false 2021-01-18 BGPS For group-living animals to remain cohesive they must agree on where to travel. Theoretical models predict shared group decisions should be favoured, and a number of empirical examples support this. However, the behavioural mechanisms that underpin shared decision-making are not fully understood. Groups may achieve consensus of direction by active communication of individual preferences (i.e. voting), or by responding to each other's orientation and movement (i.e. copying). For example, African buffalo (Syncerus caffer) are reported to use body orientation to vote and indicate their preferred direction to achieve a consensus on travel direction, while golden shiners (Notemigonus crysoleucas) achieve consensus of direction by responding to the movement cues of their neighbours. Here, we present a conceptual model (supported by agent-based simulations) that allows us to distinguish patterns of motion that represent voting or copying. We test our model predictions using high-resolution GPS and magnetometer data collected from a herd of free-ranging goats (Capra aegagrus hircus) in the Namib Desert, Namibia. We find that decisions concerning travel direction were more consistent with individuals copying one another's motion and find no evidence to support the use of voting with body orientation. Our findings highlight the role of simple behavioural rules for collective decision-making by animal groups. Journal Article Royal Society Open Science 8 2 201128 The Royal Society 2054-5703 coordination, decision-making, heuristics, rules-ofthumb, self-organization, collective behaviour 3 2 2021 2021-02-03 10.1098/rsos.201128 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University External research funder(s) paid the OA fee (includes OA grants disbursed by the Library) UKRI, NE/M015351/1 2024-10-17T16:23:45.0079090 2021-01-18T15:13:39.3442219 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences D. W. E. Sankey 1 L. R. O'Bryan 2 S. Garnier 3 G. Cowlishaw 4 P. Hopkins 5 M. Holton 6 Ines Fuertbauer 0000-0003-1404-6280 7 Andrew King 0000-0002-6870-9767 8 56075__19303__6a568bc13d7448d2b3c1fbb1cbd25b41.pdf 56075.pdf 2021-02-15T13:44:01.7925554 Output 939690 application/pdf Version of Record true © 2021 The Authors. Released under the terms of the Creative Commons Attribution License true eng http://creativecommons.org/licenses/by/4.0/
title Consensus of travel direction is achieved by simple copying, not voting, in free-ranging goats
spellingShingle Consensus of travel direction is achieved by simple copying, not voting, in free-ranging goats
Ines Fuertbauer
Andrew King
title_short Consensus of travel direction is achieved by simple copying, not voting, in free-ranging goats
title_full Consensus of travel direction is achieved by simple copying, not voting, in free-ranging goats
title_fullStr Consensus of travel direction is achieved by simple copying, not voting, in free-ranging goats
title_full_unstemmed Consensus of travel direction is achieved by simple copying, not voting, in free-ranging goats
title_sort Consensus of travel direction is achieved by simple copying, not voting, in free-ranging goats
author_id_str_mv f682ec95fa97c4fabb57dc098a9fdaaa
cc115b4bc4672840f960acc1cb078642
author_id_fullname_str_mv f682ec95fa97c4fabb57dc098a9fdaaa_***_Ines Fuertbauer
cc115b4bc4672840f960acc1cb078642_***_Andrew King
author Ines Fuertbauer
Andrew King
author2 D. W. E. Sankey
L. R. O'Bryan
S. Garnier
G. Cowlishaw
P. Hopkins
M. Holton
Ines Fuertbauer
Andrew King
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container_title Royal Society Open Science
container_volume 8
container_issue 2
container_start_page 201128
publishDate 2021
institution Swansea University
issn 2054-5703
doi_str_mv 10.1098/rsos.201128
publisher The Royal Society
college_str Faculty of Science and Engineering
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hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
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description For group-living animals to remain cohesive they must agree on where to travel. Theoretical models predict shared group decisions should be favoured, and a number of empirical examples support this. However, the behavioural mechanisms that underpin shared decision-making are not fully understood. Groups may achieve consensus of direction by active communication of individual preferences (i.e. voting), or by responding to each other's orientation and movement (i.e. copying). For example, African buffalo (Syncerus caffer) are reported to use body orientation to vote and indicate their preferred direction to achieve a consensus on travel direction, while golden shiners (Notemigonus crysoleucas) achieve consensus of direction by responding to the movement cues of their neighbours. Here, we present a conceptual model (supported by agent-based simulations) that allows us to distinguish patterns of motion that represent voting or copying. We test our model predictions using high-resolution GPS and magnetometer data collected from a herd of free-ranging goats (Capra aegagrus hircus) in the Namib Desert, Namibia. We find that decisions concerning travel direction were more consistent with individuals copying one another's motion and find no evidence to support the use of voting with body orientation. Our findings highlight the role of simple behavioural rules for collective decision-making by animal groups.
published_date 2021-02-03T14:02:57Z
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