The emergence and development of behavioral individuality in clonal fish
Laskowski, Kate L. (University of California Davis. Department of Evolution and Ecology)
Bierbach, David (Leibniz Institute of Freshwater Ecology and Inland Fisheries. Department of Biology and Ecology of Fishes)
Jolles, Jolle W. (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Doran, Carolina (Leibniz Institute of Freshwater Ecology and Inland Fisheries. Department of Biology and Ecology of Fishes)
Wolf, Max (Technical University of Berlin. Cluster of Excellence "Science of Intelligence")

Data:	2022
Resum:	Behavioral individuality is a ubiquitous phenomenon in animal populations, yet the origins and developmental trajectories of individuality, especially very early in life, are still a black box. Using a high-resolution tracking system, we mapped the behavioral trajectories of genetically identical fish (Poecilia formosa), separated immediately after birth into identical environments, over the first 10 weeks of their life at 3 s resolution. We find that (i) strong behavioral individuality is present at the very first day after birth, (ii) behavioral differences at day 1 of life predict behavior up to at least 10 weeks later, and (iii) patterns of individuality strengthen gradually over developmental time. Our results establish a null model for how behavioral individuality can develop in the absence of genetic and environmental variation and provide experimental evidence that later-in-life individuality can be strongly shaped by factors predating birth like maternal provisioning, epigenetics and pre-birth developmental stochasticity.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Behavioural ecology ; Animal behaviour
Publicat a:	Nature communications, Vol. 13 (October 2022) , art. 6419, ISSN 2041-1723

DOI: 10.1038/s41467-022-34113-y
PMID: 36307437

9 p, 1.8 MB

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