The Graduate Program in

Green Anolis Lizards

Green Anole


Ph.D. student Justin Henningsen studies the behavior, ecology, and evolution of green anoles. These small lizards are native to the Southeastern United States, where males can often be seen displaying their colorful throat fans, or dewlaps. The dewlap is thought to have evolved by sexual selection, a process that has resulted in the evolution of many strange animals features, such as the tail of a male peacock. Justin is interested in how dewlap display behavior affects the ability of a male anole to reproduce (his fitness), and how it interacts with other factors, such as behavior and hormones.

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