Milkweed’s toxins protect butterflies
By Marcia Myers Not only does this amazing plant act as a nursery, provide nectar, and serve as an important food source, it provides extra protection from predators. Both monarchs (Danaus plexippus) and queen butterflies (Danaus gilippus) store cardenolides, toxins obtained from their milkweed (Asclepias spp.) diet. Why aren’t the butterflies poisoned? Monarchs…