Description
Domesticated animal populations often show profound reductions in predator avoidance and fear-related behavior compared to wild populations.  These reductions are remarkably consistent and have been observed in a diverse array of taxa including fish, birds, and mammals.  Experiments conducted in common environments indicate that these behavioral differences have a genetic basis.  In this study, we quantified differences in fear-related behavior between wild and domesticated zebrafish strains and used microarray analysis to identify genes that may be associated with this variation.