Lecture 11 - Life History Evolution
recorded by: Yale University
published: April 17, 2010, recorded: February 2009, views: 3471
released under terms of: Creative Commons Attribution No Derivatives (CC-BY-ND)
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Life history covers three main classes of traits in organisms: age and size at maturity, number and size of offspring, and lifespan and reproductive investment. Organisms must make tradeoffs among these traits that typically cause them to come to evolutionary equilibrium at intermediate values. Life history traits are evolutionary solutions to the ecological problems of the risk of mortality and the acquisition of food, and they are expressed in reaction norms that determine the particular traits that an organism will exhibit when its genes encounter a specific environment during development.
Stearns, Stephen C. and Rolf Hoekstra. Evolution: An Introduction, chapter 10
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