Age, but not hand preference, is related to personality traits in common marmosets (Callithrix jacchus)

Autor(en)
Michaela Masilkova, Vedrana Šlipogor, Guilherme Henrique Lima Marques Silva, Magdaléna Hadová, Stanislav Lhota, Thomas Bugnyar, Martina Konečná
Abstrakt

The proximate mechanisms underlying animal personalities, i.e. consistent inter-individual differences in behaviour, are a matter of discussion. Brain lateralization, expressed as the preferred use of the contralateral limb, has been suggested as one of these mechanisms. In this study, we measured a proxy of brain lateralization in captive common marmosets (N = 28) by testing hand preference in a simple food-reaching task and evaluated personality by coding a wide range of behaviours observed in daily situations. We explored the links between personality and both direction and strength of hand preference, as well as age and sex, using linear models. Principal component analysis revealed that the stable behavioural variables were organized in three personality dimensions: Agreeableness, Extraversion and Neuroticism. Regarding hand preference, 14 individuals were left-handed, seven were right-handed and seven were ambilateral. Contrary to our predictions, we did not find any relationship between personality scores and hand preference or sex. Instead, age was a significant predictor of personality scores, with older individuals being more agreeable and less extraverted. The link between brain lateralization and personality seems to be equivocal and dependent on personality and brain lateralization assessment methods. Further examinations of other proximate mechanisms, such as physiology or (epi)genetics, may elucidate what drives personality variation in common marmosets.

Organisation(en)
Department für Verhaltens- und Kognitionsbiologie
Externe Organisation(en)
Czech University of Life Sciences Prague, University of South Bohemia in České Budějovice , Department of Behavioral and Cognitive Biology, Ústí nad Labem Zoo, Universität Wien
Journal
Royal Society Open Science
Band
9
ISSN
2054-5703
DOI
https://doi.org/10.1098/rsos.220797
Publikationsdatum
10-2022
Peer-reviewed
Ja
ÖFOS 2012
106051 Verhaltensbiologie
Schlagwörter
ASJC Scopus Sachgebiete
General
Link zum Portal
https://ucris.univie.ac.at/portal/de/publications/age-but-not-hand-preference-is-related-to-personality-traits-in-common-marmosets-callithrix-jacchus(5838899c-89bb-4a91-9756-03eecf8a7bf4).html