PICKY PAIRS

摘要

It turns out Freud got the Oedipus complex backward — at least for strawberry poison dart frogs. These brightly colored amphibians come in just about every shade of the rainbow. Their shocking hues were long believed to serve only as a warning to predators of their toxicity, but researchers recently observed that females among multicolored populations in Panama tend to pick mates that bear the same colors as their mothers. The scientists believe that, because of this picky partnering, the amphibians could one day evolve into separate, color-coded species.