Synonyms
Definition
Runaway selection is a mechanism whereby a secondary sexual trait expressed in one sex becomes genetically correlated with a preference for the trait in the other sex. The genetic coupling of the trait and the preference leads to self-reinforcing loops of coevolution between the trait and preference for the trait. This process is known as runaway selection and can lead to accelerated evolution of exaggerated traits and preferences.
Introduction
One of the greatest challenges to Darwin’s theory of evolution by natural selection was the presence of exaggerated male traits (Darwin 1859). Such traits encompass a wide variety of elaborate visual, acoustic, chemical, and behavioral characteristics (e.g., tail of the peacock or courtship song in birds). These traits appear to contradict Darwin’s idea that selection acts on traits that increase survival. Elaborate ornaments and displays seem maladaptive to their bearer as they are costly to maintain...
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Travers, L.M. (2017). Runaway Selection. In: Vonk, J., Shackelford, T. (eds) Encyclopedia of Animal Cognition and Behavior. Springer, Cham. https://doi.org/10.1007/978-3-319-47829-6_430-1
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DOI: https://doi.org/10.1007/978-3-319-47829-6_430-1
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