sexual selection

Male túngara frogs (Physalemus pustulosus) are the romantic type. Instead of roaming around looking for mates, these tiny Central and South American rain forest amphibians sit in puddles singing love songs, attracting females that flock to the aquatic crooner’s home. The frog’s calls have an unintended effect: They create ripples that draw the attention of predators lurking in…


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When it comes to choosing a mate, even lizards have certain standards. Tracy Langkilde, an associate professor of biology at Penn State University, and Lindsey Swierk, a graduate student in Langkilde’s lab, recently looked at the relationship between body-color patterning and mating behavior in the fence lizard Sceloporus undulatus, and found that the sex lives…


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