Made for Each Other: Evolution of Monogamy in Poison Frogs [pics, video]
source: http://scienceblogs.com/grrlscientist/2010/03/evolution_monogamy_dendrobatid.php
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Two very similar-looking poison dart frog species in the Peruvian rainforests have very different mating systems: one is monogamous, the other promiscuous -- why? It's all about raising their tadpoles! The size of their tadpoles' pools determines the parents' mating strategy -- this is the first example of a single ecological feature driving the evolution of a complex life history trait in a vertebrate. This story discusses how the research was done and explores the scientists' thinking as they worked through their data to make this startling conclusion.
