Abstract
Abstract Headbobbing represents one of the primary sources of communication in Iguanian lizards. Here, we describe and analyze for the first time the form and structure of the headbob display in a species of the Phymaturus genus, and compare it across sexes, social contexts, and with other species of its family. We video-recorded Phymaturus palluma adult lizards, obtained the form and structure of headbobs and evaluated the effect of sex and social context on their performing generalized linear mixed models. We found that in P. palluma, headbob is a complex display composed of several units. Headbob pattern is stereotyped, with less than 35% of variation between individuals, suggesting that it is species-specific. Moreover, units vary among sex and social context, revealing that this display is multicomponent and non-redundant following the multiple-message hypothesis. We also found that the headbob pattern was more complex than in other Liolaemidae lizards, which probably is related to the social systems registered in Phymaturus.
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