Lecture 13 - Sexual Selection

author: Stephen C. Stearns, Department of Ecology and Evolutionary Biology, Yale University
recorded by: Yale University
published: April 17, 2010,   recorded: February 2009,   views: 4686
released under terms of: Creative Commons Attribution No Derivatives (CC-BY-ND)
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Sexual selection is a component of natural selection in which mating success is traded for survival. Natural selection is not necessarily survival of the fittest, but reproduction of the fittest. Sexual dimorphism is a product of sexual selection. In intersexual selection, a sex chooses a mate. In intrasexual selection, individuals of one sex compete among themselves for access to mates. Often honest, costly signals are used to help the sex that chooses make decisions.

Reading assignment:

Stearns, Stephen C. and Rolf Hoekstra. Evolution: An Introduction, chapter 11

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