Strain differences in the collective behaviour of zebrafish (Danio rerio) in heterogeneous environment.

ABSTRACT: Recent studies show differences in individual motion and shoaling tendency between strains of the same species. Here, we analyse collective motion and response to visual stimuli in two morphologically different strains (TL and AB) of zebrafish. For both strains, we observed 10 groups of 5 and 10 zebrafish swimming freely in a large experimental tank with two identical landmarks (cylinders or discs) for 1 h. We tracked the positions of the fish by an automated tracking method and compute several metrics at the group level. First, the probability of the presence shows that both strains avoid free space and are more likely to swim in the vicinity of the walls of the tank and the landmarks. Second, the analysis of landmarks occupancy shows that AB zebrafish are more present in their vicinity t

SUBMITTER: Seguret A 

PROVIDER: S-EPMC5098983 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature