Abstract

This chapter addresses the role of hormones on the regulation of social behavior of teleost fish. It is proposed that hormones regulate social behavior by acting upon an evolutionary conserved network of brain regions that controls the expression of the different types of social behavior from aggression, to mating to parental care. Evidence for the endocrine regulation of these different types of social behaviors is presented with a special focus on sex steroids and nonapeptides of the vasotocin/isotocin family. Finally, the role of some hormones as pheromones that influence social interactions is also discussed.

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