Dynamic patterns of adaptive radiation. Export

@article{citeulike:438171, abstract = {Adaptive radiation is defined as the evolution of ecological and phenotypic diversity within a rapidly multiplying lineage. When it occurs, adaptive radiation typically follows the colonization of a new environment or the establishment of a "key innovation," which opens new ecological niches and/or new paths for evolution. Here, we take advantage of recent developments in speciation theory and modern computing power to build and explore a large-scale, stochastic, spatially explicit, individual-based model of adaptive radiation driven by adaptation to multidimensional ecological niches. We are able to model evolutionary dynamics of populations with hundreds of thousands of sexual diploid individuals over a time span of 100,000 generations assuming realistic mutation rates and allowing for genetic variation in a large number of both selected and neutral loci. Our results provide theoretical support and explanation for a number of empirical patterns including "area effect," "overshooting effect," and "least action effect," as well as for the idea of a "porous genome." Our findings suggest that the genetic architecture of traits involved in the most spectacular radiations might be rather simple. We show that a great majority of speciation events are concentrated early in the phylogeny. Our results emphasize the importance of ecological opportunity and genetic constraints in controlling the dynamics of adaptive radiation.}, address = {Departments of Ecology and Evolutionary Biology, Mathematics, and Computer Science, University of Tennessee, Knoxville, TN 37996.}, author = {Gavrilets, Sergey and Vose, Aaron}, citeulike-article-id = {438171}, citeulike-linkout-0 = {http://dx.doi.org/10.1073/pnas.0506330102}, citeulike-linkout-1 = {http://www.pnas.org/cgi/content/abstract/102/50/18040}, citeulike-linkout-2 = {http://view.ncbi.nlm.nih.gov/pubmed/16330783}, citeulike-linkout-3 = {http://www.hubmed.org/display.cgi?uids=16330783}, comment = {Words ---- allopatric speciation: isolated population ---- sympatric speciation: same place ---- parapatric speciation: population in parallel}, day = {5}, doi = {10.1073/pnas.0506330102}, issn = {0027-8424}, journal = {Proc Natl Acad Sci U S A}, keywords = {05matheco30\_theoretic, cat\_ecology, diversification, ecological, modeling, parapatric, speciation}, month = {December}, posted-at = {2006-02-08 01:31:32}, priority = {2}, title = {Dynamic patterns of adaptive radiation.}, url = {http://dx.doi.org/10.1073/pnas.0506330102}, year = {2005} }

TY - JOUR ID - citeulike:438171 L3 - citeulike-article-id:438171 N2 - Adaptive radiation is defined as the evolution of ecological and phenotypic diversity within a rapidly multiplying lineage. When it occurs, adaptive radiation typically follows the colonization of a new environment or the establishment of a "key innovation," which opens new ecological niches and/or new paths for evolution. Here, we take advantage of recent developments in speciation theory and modern computing power to build and explore a large-scale, stochastic, spatially explicit, individual-based model of adaptive radiation driven by adaptation to multidimensional ecological niches. We are able to model evolutionary dynamics of populations with hundreds of thousands of sexual diploid individuals over a time span of 100,000 generations assuming realistic mutation rates and allowing for genetic variation in a large number of both selected and neutral loci. Our results provide theoretical support and explanation for a number of empirical patterns including "area effect," "overshooting effect," and "least action effect," as well as for the idea of a "porous genome." Our findings suggest that the genetic architecture of traits involved in the most spectacular radiations might be rather simple. We show that a great majority of speciation events are concentrated early in the phylogeny. Our results emphasize the importance of ecological opportunity and genetic constraints in controlling the dynamics of adaptive radiation. JF - Proc Natl Acad Sci U S A SN - 0027-8424 AD - Departments of Ecology and Evolutionary Biology, Mathematics, and Computer Science, University of Tennessee, Knoxville, TN 37996. TI - Dynamic patterns of adaptive radiation. KW - 05matheco30_theoretic KW - cat_ecology KW - diversification KW - ecological KW - modeling KW - parapatric KW - speciation N1 - Words ---- allopatric speciation: isolated population ---- sympatric speciation: same place ---- parapatric speciation: population in parallel AU - Gavrilets, Sergey AU - Vose, Aaron PY - 2005/12/05/ UR - http://dx.doi.org/10.1073/pnas.0506330102 ER -