Relationships among hormones, brain and motivated behaviors in lizards

Lizards provide a rich opportunity for investigating the mechanisms associated with arousal and the display of motivated behaviors. They exhibit diverse mating strategies and modes of conspecific communication. This review focuses on anole lizards, of which green anoles ( Anolis carolinensis) have been most extensively studied. Research from other species is discussed in that context. By considering mechanisms collectively, we can begin to piece together neural and endocrine factors mediating the stimulation of sexual and aggressive behaviors in this group of vertebrates. ►Testosterone, as well as environmental and genetic factors, can influence arousal and the display of motivated behaviors in lizards. ►Many parallels exist between the morphology of neural and muscular structures and their regulation of reproductive and aggressive behaviors. ►Relationships among hormones, brain and behavior are complicated, and require further study across vertebrate groups.