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

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...

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Autores principales: Masilkova, Michaela, Šlipogor, Vedrana, Lima Marques Silva, Guilherme Henrique, Hadová, Magdaléna, Lhota, Stanislav, Bugnyar, Thomas, Konečná, Martina
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9579762/
https://www.ncbi.nlm.nih.gov/pubmed/36300134
http://dx.doi.org/10.1098/rsos.220797
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author Masilkova, Michaela
Šlipogor, Vedrana
Lima Marques Silva, Guilherme Henrique
Hadová, Magdaléna
Lhota, Stanislav
Bugnyar, Thomas
Konečná, Martina
author_facet Masilkova, Michaela
Šlipogor, Vedrana
Lima Marques Silva, Guilherme Henrique
Hadová, Magdaléna
Lhota, Stanislav
Bugnyar, Thomas
Konečná, Martina
author_sort Masilkova, Michaela
collection PubMed
description 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.
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spelling pubmed-95797622022-10-25 Age, but not hand preference, is related to personality traits in common marmosets (Callithrix jacchus) Masilkova, Michaela Šlipogor, Vedrana Lima Marques Silva, Guilherme Henrique Hadová, Magdaléna Lhota, Stanislav Bugnyar, Thomas Konečná, Martina R Soc Open Sci Organismal and Evolutionary Biology 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. The Royal Society 2022-10-19 /pmc/articles/PMC9579762/ /pubmed/36300134 http://dx.doi.org/10.1098/rsos.220797 Text en © 2022 The Authors. https://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, provided the original author and source are credited.
spellingShingle Organismal and Evolutionary Biology
Masilkova, Michaela
Šlipogor, Vedrana
Lima Marques Silva, Guilherme Henrique
Hadová, Magdaléna
Lhota, Stanislav
Bugnyar, Thomas
Konečná, Martina
Age, but not hand preference, is related to personality traits in common marmosets (Callithrix jacchus)
title Age, but not hand preference, is related to personality traits in common marmosets (Callithrix jacchus)
title_full Age, but not hand preference, is related to personality traits in common marmosets (Callithrix jacchus)
title_fullStr Age, but not hand preference, is related to personality traits in common marmosets (Callithrix jacchus)
title_full_unstemmed Age, but not hand preference, is related to personality traits in common marmosets (Callithrix jacchus)
title_short Age, but not hand preference, is related to personality traits in common marmosets (Callithrix jacchus)
title_sort age, but not hand preference, is related to personality traits in common marmosets (callithrix jacchus)
topic Organismal and Evolutionary Biology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9579762/
https://www.ncbi.nlm.nih.gov/pubmed/36300134
http://dx.doi.org/10.1098/rsos.220797
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