Liolaemus chiliensis is the only species of the genus that vocalizes. This study explores the
effectiveness of distress calls produced by the lizard this species, L. chiliensis, in alerting
conspecifics and individuals of a syntopic species, L. gravenhorsti about predation risk. These
acoustic signals have components both in the audible and ultrasound range, and previous studies
have showed that the interactions between these acoustic signals and chemical signals are
complex and partial. Since previous studies have been conducted using the audible components of
the calls, it is expected that the ultrasound components enhance the effectiveness of interactions
between the two modalities of stimuli. The auditory sensitivity of lizards will also be measured to
determine the sensory substrate of the behavioral responses examined.
