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How Do Cicadas Know When to Emerge from the Ground?

Entomology Today, March 22, 2016

Professor of Ecology and Evolutionary Biology Christine Simon began studying periodical cicadas as an undergraduate student because she was interested in learning about speciation. In an article about cicadas and their life-cycles, Professor Simon says “the year of cicada emergence is cued by what I and others believe to be an internal molecular clock,” which is “most likely calibrated by environmental cues that signify the passage of a year, such as the trees leafing out…[and] the accumulation of 13 or 17 years triggers the emergence.”

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