Michel Chapuisat is a professor in the Department of Ecology and Evolution at the University of Lausanne, Switzerland. He studies the evolution of social behaviour, with a focus on the structure, function and evolution of insect societies. His research combines genomic, behavioural, ecological and experimental approaches, in the field and laboratory.

Chapuisat made substantial contributions to several areas of evolutionary biology, including sex allocation, population genetics, social immunity and the evolution of social organization. He is currently working on the causes and consequences of social structure variation in ants. With his team, Chapuisat has identified a supergene controlling social organization in the Alpine silver ant. This finding contributes to our understanding of the genomic evolution underlying social polymorphisms.

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