The Story of the Mimic Caterpillar that Lives in an Ant Nest and Eats Its Siblings - Francesca Barbero

The Story of the Mimic Caterpillar that Lives in an Ant Nest and Eats Its Siblings - Francesca Barbero In this video, Francesca Barbero, a researcher at the University of Turin, tells the fascinating story of a butterfly that has a very unusual life cycle. The butterfly is called the Large Blue, and it belongs to a group of butterflies that are known as social parasites. These butterflies exploit the social behavior of ants to survive and reproduce. The Large Blue butterfly lays its eggs on a plant that emits a toxic chemical called carvacrol, which repels most insects. However, the plant also attracts a specific species of red ant, called Myrmica, that builds its nest nearby. The caterpillar of the Large Blue hatches from the egg and feeds on the plant for a while, until it falls to the ground. There, it uses its chemical and acoustic mimicry to trick the ants into thinking that it is one of their own larvae. The ants then carry the caterpillar into their nest, where it is treated like royalty. The caterpillar makes a sound that resembles the queen ant, and the worker ants feed it and protect it from predators. However, the caterpillar is not a grateful guest. It starts to eat the ant larvae and eggs, growing fat and strong by devouring its hosts. The ants do not seem to notice or care, as they are under the spell of the caterpillar’s mimicry. After about a year, the caterpillar transforms into a pupa, and then emerges as an butterfly. It then leaves the ant nest, flying away to find a mate and start the cycle again. This amazing story reveals the complex and fascinating interactions between plants, insects, and animals. It also shows how some species have evolved to exploit the social behavior of others, using deception and manipulation to ensure their survival. The video is based on the research of Francesca Barbero and her colleagues, who have studied the ecology and evolution of the Large Blue butterfly and its ant hosts