Behavior and Morphological Evolution

The adaptive plasticity of behavior means that behavior may often affect the direction of evolution in morphology, although the reverse can occur. Condition-sensitive expression of a particular behavior in a particular environmental circumstance (trait-environment matching) increases the consistency of selection on any morphology that is employed when the behavior is performed, enhancing the likelihood of directional selection and evolution of the morphology. Evolutionary improvement of condition-sensitive expression (regulation) and trait form are expected to mutually feed back upon each other in a self-reinforcing acceleration in the evolution of behavioral regulation and form.

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