title: Personality over ontogeny in zebra finches: long-term repeatable traits but unstable behavioural syndromes.
abstract: A crucial assumption of animal personality research is that behaviour is consistent over time, showing a high repeatability within individuals. This assumption is often made, sometimes tested using short time intervals between behavioural tests, but rarely thoroughly investigated across long time intervals crossing different stages of ontogeny. We performed such a longitudinal test across three life stages in zebra finches (Taeniopygia guttata), representing about 15-20% of their life span in captivity, and found repeatabilities ranging from 0.03 to 0.67. Fearlessness and exploration were the most repeatable traits both within and across life stages. Activity and aggression were repeatable across, but not or only partly within life stages. Boldness was not repeatable. Furthermore, we found no evidence for a consistent behavioural syndrome structure across ontogeny. Our results indicate that the consistency of behavioural traits and their correlations might be overestimated and suggest that life-long stability of animal personality should not simply be assumed.
authors.affiliation: Department of Animal Behaviour, Bielefeld University, PO Box 100131, 33501 Bielefeld Germany.
authors.forename: Yvonne
authors.initials: Y
authors.lastname: Wuerz
authors.affiliation: Department of Animal Behaviour, Bielefeld University, PO Box 100131, 33501 Bielefeld Germany.
authors.forename: Oliver
authors.initials: O
authors.lastname: Krüger
keywords: Animal personality; activity; aggression; behavioural syndrome; boldness; consistency; exploration; ontogeny; repeatability; tonic immobility
references.citation: Dev Psychobiol. 2011 Sep;53(6):510-20
references.pmid: 21866538
references.citation: Am Nat. 2013 Nov;182(5):621-9
references.pmid: 24107369
references.citation: Behav Res Methods. 2009 May;41(2):472-6
references.pmid: 19363187
references.citation: Dev Psychobiol. 2011 Sep;53(6):641-55
references.pmid: 21866544
references.citation: BMC Ecol. 2013 Dec 07;13:49
references.pmid: 24314274
references.citation: Ecol Lett. 2013 Jan;16(1):47-55
references.pmid: 23034098
references.citation: PLoS One. 2013;8(3):e59437
references.pmid: 23555034
references.citation: Trends Ecol Evol. 2004 Jul;19(7):372-8
references.pmid: 16701288
references.citation: Dev Psychobiol. 2011 Sep;53(6):505-9
references.pmid: 21866537
references.citation: Nature. 2007 May 31;447(7144):581-4
references.pmid: 17538618
references.citation: PeerJ. 2014 Sep 16;2:e566
references.pmid: 25279258
references.citation: Anim Behav. 2009 Apr 1;77(4):771-783
references.pmid: 24707058
references.citation: Biol Rev Camb Philos Soc. 2010 May;85(2):217-46
references.pmid: 19922534
references.citation: Biol Rev Camb Philos Soc. 2010 Nov;85(4):935-56
references.pmid: 20569253
references.citation: Philos Trans R Soc Lond B Biol Sci. 2010 Dec 27;365(1560):4029-41
references.pmid: 21078655
references.citation: Ecol Lett. 2007 Sep;10(9):828-34
references.pmid: 17663716
references.citation: Gen Comp Endocrinol. 2008 Jan 15;155(2):288-97
references.pmid: 17586506
references.citation: Psychol Bull. 2001 Jan;127(1):45-86
references.pmid: 11271756
references.citation: Philos Trans R Soc Lond B Biol Sci. 2010 Dec 27;365(1560):3959-68
references.pmid: 21078648
references.citation: J Evol Biol. 2013 Oct;26(10):2260-70
references.pmid: 23980636
references.citation: J Comp Psychol. 2012 Feb;126(1):10-4
references.pmid: 21767006
references.citation: J Evol Biol. 2007 Sep;20(5):1674-81
references.pmid: 17714284
references.citation: Biol Rev Camb Philos Soc. 2007 Nov;82(4):591-605
references.pmid: 17944619
references.citation: Q Rev Biol. 1995 Jun;70(2):165-91
references.pmid: 7610234
references.citation: Q Rev Biol. 2004 Sep;79(3):241-77
references.pmid: 15529965
references.citation: Behav Processes. 2014 Sep;107:150-7
references.pmid: 25173618
references.citation: Proc Natl Acad Sci U S A. 2012 Jan 31;109(5):1743-8
references.pmid: 22232671