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Game Theory Explains Perplexing Evolutionary Stable Strategy

This study explores how game theory explains the evolutionary dynamics of side-blotched lizards (Uta stanburiana). Sinervo and Lively's research reveals a cyclical pattern in male morph frequencies and their relative fitness, resembling a rock-paper-scissors game. By modeling the interactions of different lizard morphs, the findings illustrate a complex system where the highest frequency morph shifts based on the mating success of each type. This intriguing analysis sheds light on the application of game theory to biological evolution and competition.

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Game Theory Explains Perplexing Evolutionary Stable Strategy

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  1. Side Blotch Lizards (Uta stanburiana) Game Theory Explains Perplexing Evolutionary Stable Strategy Erin N. Bodine Math 188: Social Choice & Decision Making 22 – April - 2003

  2. Observations of Morph Frequency and Fitness Morph Frequency Sinervo and Lively find a cycle in which morph has the highest frequency. Morph Fitness Sinervo and Lively find that the cycle of morph frequency relates to the fitness of each male type.

  3. Relative Morph Fitness

  4. Rock-Paper-Scissors Game Matrix for Rock-Paper-Scissors The model of rock-paper-scissors typically used by game theorists. 1 = win 0 = draw -1 = loss for player I Payoffs shown are for player I Let nature randomly pick two side-blotched lizards to inhabit the same territory for mating. Depending on what male morph they are, the lizard with the greater fitness in that territory will play out like a game of rock-paper-scissors.

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