Why Don’t Frogs Poison Themselves?
Rebecca Tarvin recorded this Aquacast at the Aquarium on October 12, 2017. Tarvin is a Ph.D. student in the Evolution, Ecology, and Behavior program at the University of Texas at Austin. She has studied frogs in Ecuador and Colombia and studies in the evolution of toxicity in poison frogs.
From bacteria to mammals, many organisms have evolved toxic defenses to ward off potential predators. Poison dart frogs are well known for their showy coloration, and they have just as many toxins as they do unique color patters. Tarvin discusses how animals evolve genetic resistance to toxins and how this can affect whether they become toxic.