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Rapid large-scale evolutionary divergence in morphology and performance associated with exploitation of a different dietary resource.

ABSTRACT: Although rapid adaptive changes in morphology on ecological time scales are now well documented in natural populations, the effects of such changes on whole-organism performance capacity and the consequences on ecological dynamics at the population level are often unclear. Here we show how lizards have rapidly evolved differences in head morphology, bite strength, and digestive tract structure after experimental introduction into a novel environment. Despite the short time scale ( approximately 36 years) since this introduction, these changes in morphology and performance parallel those typically documented among species and even families of lizards in both the type and extent of their specialization. Moreover, these changes have occurred side-by-side with dramatic changes in population density and social structure, providing a compelling example of how the invasion of a novel habitat can evolutionarily drive multiple aspects of the phenotype.

SUBMITTER: Herrel A

PROVIDER: S-EPMC2290806 | biostudies-literature | 2008 Mar

REPOSITORIES: biostudies-literature

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Rapid large-scale evolutionary divergence in morphology and performance associated with exploitation of a different dietary resource.

Herrel Anthony A Huyghe Katleen K Vanhooydonck Bieke B Backeljau Thierry T Breugelmans Karin K Grbac Irena I Van Damme Raoul R Irschick Duncan J DJ

Proceedings of the National Academy of Sciences of the United States of America 20080314 12

Although rapid adaptive changes in morphology on ecological time scales are now well documented in natural populations, the effects of such changes on whole-organism performance capacity and the consequences on ecological dynamics at the population level are often unclear. Here we show how lizards have rapidly evolved differences in head morphology, bite strength, and digestive tract structure after experimental introduction into a novel environment. Despite the short time scale ( approximately ...[more]

PMID: 18344323

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Rapid large-scale evolutionary divergence in morphology and performance associated with exploitation of a different dietary resource.

Publications

Rapid large-scale evolutionary divergence in morphology and performance associated with exploitation of a different dietary resource.

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