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Episode 94 - What do ants teach us about living in groups and with disease?
Ants and other eusocial insects have taken group living to the extreme and while we may not think of these animals as representative of human societies studying the fundementals of the evolution of and consequences of social living using ants makes a lot of sense. My guest Yuko Ulrich is a behavioral ecologist and group leader at the Max Planck Institute for Chemical Ecology in Jena, Germany. She joined me to discuss how she uses a unique ant species, commonly known as the clonal raider ant, to ask basic questions regarding evolution and behavior. She explains why the clonal raider ants are such a useful model system and discusses the results from two studies that look at the evolution of group living itself and how an individuals behavior within a group affects their risk for disease.
This conversation really highlights the importance of experimental biology for asking and answering questions that may seem obvious but that must answered before we can discover exactly why group living is so succesful or understand how groups evolved to defend against disease. It was also a nice reminder that working together in the face of an outbreak offers unique defenses solitary individuals don't have. Finally, we touch on what happens when the parasite takes things to the extreme and manipulates host behavior. That's right, zombie parasites.
Links to both of the studies discussed can be found below.
- Fitness benefits and emergent division of labour at the onset of group living | Nature
- Behavioural individuality determines infection risk in clonal ant colonies | Nature Communications
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