Hybridization and adaptive radiation Export

@article{citeulike:2072294, abstract = {Whether interspecific hybridization is important as a mechanism that generates biological diversity is a matter of controversy. Whereas some authors focus on the potential of hybridization as a source of genetic variation, functional novelty and new species, others argue against any important role, because reduced fitness would typically render hybrids an evolutionary dead end. By drawing on recent developments in the genetics and ecology of hybridization and on principles of ecological speciation theory, I develop a concept that reconciles these views and adds a new twist to this debate. Because hybridization is common when populations invade new environments and potentially elevates rates of response to selection, it predisposes colonizing populations to rapid adaptive diversification under disruptive or divergent selection. I discuss predictions and suggest tests of this hybrid swarm theory of adaptive radiation and review published molecular phylogenies of adaptive radiations in light of the theory.}, author = {Seehausen, Ole}, citeulike-article-id = {2072294}, citeulike-linkout-0 = {http://dx.doi.org/10.1016/j.tree.2004.01.003}, citeulike-linkout-1 = {http://www.sciencedirect.com/science/article/B6VJ1-4BHJWRR-1/2/5eda62abab9c19299797e4dbcd1e7268}, doi = {10.1016/j.tree.2004.01.003}, journal = {Trends in Ecology \& Evolution}, keywords = {adaptive, and, hybridization, radiation}, month = {April}, number = {4}, pages = {198--207}, posted-at = {2007-12-07 09:28:03}, priority = {2}, title = {Hybridization and adaptive radiation}, url = {http://dx.doi.org/10.1016/j.tree.2004.01.003}, volume = {19}, year = {2004} }

TY - JOUR ID - citeulike:2072294 L3 - citeulike-article-id:2072294 N2 - Whether interspecific hybridization is important as a mechanism that generates biological diversity is a matter of controversy. Whereas some authors focus on the potential of hybridization as a source of genetic variation, functional novelty and new species, others argue against any important role, because reduced fitness would typically render hybrids an evolutionary dead end. By drawing on recent developments in the genetics and ecology of hybridization and on principles of ecological speciation theory, I develop a concept that reconciles these views and adds a new twist to this debate. Because hybridization is common when populations invade new environments and potentially elevates rates of response to selection, it predisposes colonizing populations to rapid adaptive diversification under disruptive or divergent selection. I discuss predictions and suggest tests of this hybrid swarm theory of adaptive radiation and review published molecular phylogenies of adaptive radiations in light of the theory. IS - 4 JF - Trends in Ecology & Evolution EP - 207 TI - Hybridization and adaptive radiation VL - 19 SP - 198 KW - adaptive KW - and KW - hybridization KW - radiation AU - Seehausen, Ole PY - 2004/04// UR - http://dx.doi.org/10.1016/j.tree.2004.01.003 ER -