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Intra-individual behavioural variability: a trait under genetic control

Henriksen, Rie and Höglund, Andrey and Fogelholm, Jesper and Abbey-Lee, Robin and Johnsson, Martin and Dingemanse, Niels J. and Wright, Dominic (2020). Intra-individual behavioural variability: a trait under genetic control. International Journal of Molecular Sciences. 21 , 8069
[Journal article]

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Abstract

When individuals are measured more than once in the same context they do not behave in exactly the same way each time. The degree of predictability differs between individuals, with some individuals showing low levels of variation around their behavioural mean while others show high levels of variation. This intra-individual variability in behaviour has received much less attention than between-individual variability in behaviour, and very little is known about the underlying mechanisms that affect this potentially large but understudied component of behavioural variation. In this study, we combine standardized behavioural tests in a chicken intercross to estimate intra-individual behavioural variability with a large-scale genomics analysis to identify genes affecting intra-individual behavioural variability in an avian population. We used a variety of different anxiety-related behavioural phenotypes for this purpose. Our study shows that intra-individual variability in behaviour has a direct genetic basis that is largely unique compared to the genetic architecture for the standard behavioural measures they are based on (at least in the detected quantitative trait locus). We identify six suggestive candidate genes that may underpin differences in intra-individual behavioural variability, with several of these candidates having previously been linked to behaviour and mental health. These findings demonstrate that intra-individual variability in behaviour appears to be a heritable trait in and of itself on which evolution can act.

Authors/Creators:Henriksen, Rie and Höglund, Andrey and Fogelholm, Jesper and Abbey-Lee, Robin and Johnsson, Martin and Dingemanse, Niels J. and Wright, Dominic
Title:Intra-individual behavioural variability: a trait under genetic control
Year of publishing :2020
Volume:21
Article number:8069
ISSN:1661-6596
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Genetics (medical genetics to be 30107 and agricultural genetics to be 40402)
Keywords:individual differences, QTL, Gallus gallus, fearfulness, sociability, personality
URN:NBN:urn:nbn:se:slu:epsilon-p-108587
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-108587
Additional ID:
Type of IDID
DOI10.3390/ijms21218069
ID Code:18673
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Dept. of Animal Breeding and Genetics
Deposited By: SLUpub Connector
Deposited On:16 Nov 2020 07:57
Metadata Last Modified:16 Nov 2020 08:10

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