News Round-Up

Male dragonflies lose their ‘bling’ in hotter climates


A study in the Proceedings of the National Academy of Sciences led by Michael Moore at Washington University in St. Louis finds that dragonfly males have consistently evolved less breeding coloration in regions with hotter climates.

“Our study shows that the wing pigmentation of dragonfly males evolves so consistently in response to the climate that it’s among the most predictable evolutionary responses ever observed for a mating-related trait,” said Moore, who is a postdoctoral fellow with the Living Earth Collaborative. MORE

Header image: The common whitetail dragonfly (Plathemis lydia) is frequently seen by anglers and nature-lovers in the St. Louis region. This dragonfly expresses saturated patches of dark melanin coloration. Credit: B. Marlin, Wikimedia Commons.