Population, sex and body size: determinants of behavioural variations and behavioural correlations among wild zebrafish Danio rerio.

ABSTRACT: This study (1) investigated variation among populations and the effects of sex and body size on boldness, activity and shoal-association tendency among wild zebrafish, and (2) tested for existence of correlations between behaviours, controlling for sex and body size. Individuals across four natural populations were tested for general activity in a novel situation, number of predator inspections undertaken and tendency to associate with a conspecific shoal in the presence of predators. Results showed a significant effect of population on boldness with a population from high-predation habitat being bolder than populations from low-predation habitats. Males showed significantly higher tendencies than females to associate with a conspecific shoal in the presence of predators. Further, a negati

SUBMITTER: Roy T 

PROVIDER: S-EPMC5792886 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature