Does breeding season variation affect evolution of a sexual signaling trait in a tropical lizard clade?

Levi Gray, Anthony Barley, David Hillis, Carlos Pavón-Vázquez, Steven Poe & Brittney White
Sexually selected traits can be expected to increase in importance when the period of sexual behavior is constrained, such as in seasonally restricted breeders. Anolis lizard male dewlaps are classic examples of multifaceted signaling traits, with demonstrated intraspecific reproductive function reflected in courtship behavior. Fitch and Hillis found a correlation between dewlap size and seasonality in mainland Anolis using traditional statistical methods. Here, we present two tests of the Fitch-Hillis Hypothesis using new phylogenetic and...
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