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Thermal AdaptationA Theoretical and Empirical Synthesis$
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Michael J. Angilletta Jr.

Print publication date: 2009

Print ISBN-13: 9780198570875

Published to Oxford Scholarship Online: May 2009

DOI: 10.1093/acprof:oso/9780198570875.001.1

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Thermal Games

Thermal Games

(p.199) CHAPTER 8 Thermal Games
Thermal Adaptation

Michael J. Angilletta

Oxford University Press

Models of thermal adaptation generally ignore selective pressures imposed by the interactions among genotypes. This view should be replaced by the concept of a thermal game, in which the optimal strategy of thermosensitivity, thermoregulation, or acclimation depends on the strategies of other organisms. Models of thermal games predict patterns of adaptation that differ drastically from the patterns generated by traditional optimality models. Natural selection might favour a very low accuracy of thermoregulation when an organism must deal with competitors or predators. The same ecological interactions can shape the evolution of performance curves in surprising ways. For example, competition can cause the thermal optimum to deviate from the mean environmental temperature. Furthermore, predation can cause endless cycles of adaptation in which the thermal optima of predators and prey rarely match their mean temperatures. Equally novel insights will likely emerge from the analysis of other thermal games.

Keywords:   coevolution, evolutionarily stable strategy, competition, predation, game theory, performance curve, thermoregulation, thermal optimum, performance breadth

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