A radiação adaptiva é um fato, Fato, FATO, mas nós não temos evidência robusta de como isso acontece...

quinta-feira, dezembro 31, 2009

Science 6 February 2009:
Vol. 323. no. 5915, pp. 732 - 737
DOI: 10.1126/science.1157966
Adaptive Radiation: Contrasting Theory with Data
Sergey Gavrilets1* and Jonathan B. Losos2

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.

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.
* To whom correspondence should be addressed. E-mail: sergey@tiem.utk.edu

Source/Fonte: Science


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