[S32] Coevolution in antagonistic ecological interactions

Exploitation strategies are at the core of consumer-resource interactions: herbivores exploit plants, predators exploit prey, and parasites exploit their hosts. Most theory on the evolution of exploitation strategies has concentrated on host-parasite interactions, modelling for example the virulence-transmission trade-off or within-host competition between strains with different exploitation strategies. However, this theory has rarely been applied to other antagonistic interactions, such as plant-herbivore or predator-prey interactions. Recently, empirical work has made important progress in identifying exploitation strategies outside host-parasite systems. Herbivores, for example, not only express resistance to plant defence, but have now been shown to exploit their host through suppression of defence in many systems. Within a community context, these exploitation strategies have profoundly different consequences: resistance affects competition with other herbivores and apparent competition through natural enemies, but suppression and induction of plant defences directly affect food quality for others, such as kin, competitors and even natural enemies. Given that suppression of plant defences also benefits other community members, how could this exploitation strategy evolve? This symposium aims to bring together empiricists and theoreticians working on antagonistic coevolution in parasite-host, predator-prey and plant-herbivore systems, addressing the evolution of exploitation strategies in antagonistic ecological interactions.
 
Organizers: Bram Knegt, Felipe Lemos
 
Invited speakers: Candace Low, Minus van Baalen