'Love at first sight': The effect of personality and colouration patterns in the reproductive success of zebrafish (Danio rerio)

PloS One
Reynaldo VargasSonia Rey

Abstract

Individual differences in animal personality and external appearance such as colouration patterns have both been extensively studied separately. A significant body of research has explored many of pertinent ecological and biological aspects that can be affected by them and their impact upon fitness. Currently little is known about how both factors interact and their effect on reproductive success. In this study, we evaluated two major parameters contributing to the fitness of the species: reproduction and offspring survival. We selected two different phenotypes of the zebrafish (Danio rerio) selected by their colouration patterns: phenotype 1) named Wild type, UAB line (WT-UAB) with a homogeneous colouration pattern (clear and defined lateral stripes) and phenotype 2) Wild type indefinite (WT-I) had a heterogeneous colouration pattern and different degrees of lateral stripe definition. All animals were also screened for personality. We then compared their reproductive success (spawning rate) and offspring survival at different stages, from egg to larvae, and for 2 successive generations (parental generation was G0; First and second generations were G1 and G2 respectively). Our results show that personality traits were the main ...Continue Reading

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Citations

Apr 30, 2019·Royal Society Open Science·Børge DamsgårdErik Höglund
Nov 16, 2019·BMC Evolutionary Biology·Magdalena Herdegen-Radwan
Dec 4, 2021·Biological Reviews of the Cambridge Philosophical Society·Elène Haave-AudetKimberley J Mathot

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