14. Coevolution and Mutualisms

What will you learn in this lecture:

• To describe and provide examples of the major forms of mimicry.
• To list major classes of mutualisms which exist within and between different species, and be able to describe examples of each.

Enrolled students of fall 2024 should watch this lecture before November 5.

What questions should you be able to answer now?

• What is the difference between Batesian and Müllerian mimicry?
• How are these examples of coevolution?
• Can you think describe different examples of symbiosis not mentioned in the video? Are they facultative or obligatory? And what do they bring to each partner?
• At the individual level, what advantages do facultative relationships provide compared to individuals not participating on such a relationship?

Useful links and materials:
Chapter 12 in: Krebs, Charles J. Ecology: The Experimental Analysis of Distribution and Abundance.

Featured image: Androstenone was the first mammalian pheromone to be identified. It is found in high concentrations in the saliva of male pigs and is also present in truffles.  When inhaled by a female pig in heat, it encourages her to assume the mating stance.