University of Oulu

Kaiser, A, Eymard, M, Merckx, T, Van Dyck, H. Individual plasticity drives boldness senescence in a territorial butterfly. Ethology. 2020; 126: 1061– 1068. https://doi.org/10.1111/eth.13084

Individual plasticity drives boldness senescence in a territorial butterfly

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Author: Kaiser, Aurélien1; Eymard, Manon1; Merckx, Thomas1,2;
Organizations: 1Behavioural Ecology & Conservation Group, Earth & Life Institute, UCLouvain, Louvain‐la‐Neuve, Belgium
2Department of Ecology and Genetics, University of Oulu, Oulu, Finland
Format: article
Version: accepted version
Access: embargoed
Persistent link: http://urn.fi/urn:nbn:fi-fe2020100778329
Language: English
Published: John Wiley & Sons, 2020
Publish Date: 2021-08-19
Description:

Abstract

Most behavioural traits show plastic responses to changes in internal or external conditions. Similarly, animal personality is not necessarily fixed during an individual’s lifetime, leading to age‐related changes. Both individual plasticity (i.e., within‐individual effect) and non‐random selective (dis)appearance of behavioural types (i.e., between‐individual effect) may contribute to age‐related changes observed at the population level. Here, we investigated how boldness changes with age in a woodland population of the Speckled wood butterfly (Pararge aegeria L.) using a capture–mark–recapture approach. We used wing wear as an index for age and we show that fresh individuals are bolder than worn individuals. Using the subsample of recaptured butterflies, we found that this pattern is most likely driven by individual plasticity. Our design also allowed us to explore some aspects of the species’ spatial ecology and how it relates to personality. We found no relationship between boldness and net displacement between successive captures, a finding which we discuss within a movement ecology framework.

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Series: Ethology
ISSN: 0179-1613
ISSN-E: 1439-0310
ISSN-L: 0179-1613
Volume: 126
Issue: 11
Pages: 1061 - 1068
DOI: 10.1111/eth.13084
OADOI: https://oadoi.org/10.1111/eth.13084
Type of Publication: A1 Journal article – refereed
Field of Science: 1181 Ecology, evolutionary biology
Subjects:
Funding: AK was supported by an Aspirant grant from the Belgian Fund of Scientific Research F.S.R.‐FNRS. The research was supported by PDR grant FNRS PDR T.0188.14 and an ARC research grant of Fédération Wallonie‐Bruxelles and UCLouvain (ARC grant 17/22‐086) to HVD. This is publication number BRC 364 of the Biodiversity Research Centre (ELI/ELIB, UCLouvain).
Copyright information: © 2020 Wiley‐VCH GmbH. This is the peer reviewed version of the following article: Kaiser, A, Eymard, M, Merckx, T, Van Dyck, H. Individual plasticity drives boldness senescence in a territorial butterfly. Ethology. 2020; 126: 1061– 1068, which has been published in final form at https://doi.org/10.1111/eth.13084. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving."