Penn State Assistant Professor of Biology Tracy Langkilde has shown that native fence lizards in the southeastern United States are adapting to potentially fatal invasive fire-ant attacks by developing behaviors that enable them to escape from the ants, as well as by developing longer hind legs, which can increase the effectiveness of this behavior. The results will be described in a paper to be published later this month in the journal Ecology. Fire ants from South America, which were introduced to the United States accidentally in the s, often will attack a fence lizard that has wandered onto their mound in order to protect their home. But the ants also have been observed attacking lizards that are nowhere near their mound.
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