Science & Medicine
Monday, February 23rd, 2015 - Rebecca Tarvin talks about how poison frogs avoid poisoning themselves
Rebecca Tarvin’s doctoral research focuses on the evolution of chemical defense and resistance to self-intoxication in poison frogs (Dendrobatidae), which are native to Central and South America. Chemically defended poison frogs sequester distasteful alkaloids from insects in their diet and secrete these chemicals from dermal glands for defense. Dendrobatids are often brightly colored to warn potential predators, and the levels of toxicity vary considerably from one species to the next and from one population to another. Rebecca discusses her work on how the genetic and physiological basis of alkaloid resistance relate to phylogenetic and ecological patterns across Dendrobatidae. Tune in to learn about how poison frogs evolved the ability to resist their own toxins!
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