This is a cool paper on the repeated evolution of a behavior that keeps ant colonies cohesive.
Reposted from
Adria LeBoeuf
Using Bayesian neural networks and evolutionary modelling, we show that trophallaxis evolved twice in ants: 130 million years ago when flowering plants became more abundant and ants began harvesting sugary liquids from plants and their insect partners, and again in others ~90 million years ago.
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