Individual plasticity drives boldness senescence in a territorial butterfly
|Author:||Kaiser, Aurélien1; Eymard, Manon1; Merckx, Thomas1,2;|
1Behavioural Ecology & Conservation Group, Earth & Life Institute, UCLouvain, Louvain‐la‐Neuve, Belgium
2Department of Ecology and Genetics, University of Oulu, Oulu, Finland
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2020100778329
John Wiley & Sons,
|Publish Date:|| 2021-08-19
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.
|Pages:||1061 - 1068|
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
1181 Ecology, evolutionary biology
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).
© 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."