Adaptive Radiation: Contrasting Theory with Data-Reference-Cited by-同舟云学术

Adaptive Radiation: Contrasting Theory with Data

Published:2009-02-06 Issue:5915 Volume:323 Page:732-737
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Gavrilets Sergey¹²,Losos Jonathan B.¹²

Affiliation:

1. Departments of Ecology and Evolutionary Biology and Mathematics, National Institute for Mathematical and Biological Synthesis, University of Tennessee, Knoxville, TN 37996, USA.

2. Museum of Comparative Zoology and Department of Organismic and Evolutionary Biology, Harvard University, 26 Oxford Street, Cambridge, MA 02138, USA.

Abstract

Biologists have long been fascinated by the exceptionally high diversity displayed by some evolutionary groups. Adaptive radiation in such clades is not only spectacular, but is also an extremely complex process influenced by a variety of ecological, genetic, and developmental factors and strongly dependent on historical contingencies. Using modeling approaches, we identify 10 general patterns concerning the temporal, spatial, and genetic/morphological properties of adaptive radiation. Some of these are strongly supported by empirical work, whereas for others, empirical support is more tentative. In almost all cases, more data are needed. Future progress in our understanding of adaptive radiation will be most successful if theoretical and empirical approaches are integrated, as has happened in other areas of evolutionary biology.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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5. Some workers add to the definition that divergence occurs unusually rapidly ( 2 ) or is unusually great ( 3 ) to emphasize the difference between adaptive radiation and standard processes of evolutionary diversification. In addition some workers consider any ecologically diverse evolutionary group to represent an adaptive radiation but we believe that such an interpretation makes “adaptive radiation” nothing more than the product of evolutionary diversification as opposed to highlighting those groups that have experienced unusually great evolutionary divergence the cause of which requires explanation. This begs the question of how to identify those groups that constitute adaptive radiations a topic that has only recently been broached ( 3 ). Note also that some workers consider the rapidity in which diversification occurred as part of the definition whereas others consider it an ancillary hypothesis to be tested ( 4 ).

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