PLSC 213 Lecture Notes - Lecture 12: Evolutionary Arms Race, Herbivore, Coevolution

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15 Apr 2019
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Evolutionary arms races: how to avoid getting eaten. Arms races arise when there are strong evolutionary pressures. To eat, even in food heavily depended. When the herbivore has a choice, it will try and eat it anyway which makes selective pressure. Defended food may be an open resource for which there is little competition. Innovations in either attack or defence present opportunities for feedback and co-evolution. Key aspects of plant herbivore interactions open to evolutionary arms races. Against all herbivores or only select herbivores. Plants have a number of option that they can use. Likely to drive rapid selection i herbivores. How should a plant defend itself ( graph ) Induced defences are typically used against insect herbivores, insects are going to have rapid evolution of responses because they might have several generation a year. Defences induced by allowing caterpillar to eat single leaf.

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