Palmer Daniela H, Kronforst Marcus R
Committee on Evolutionary Biology, University of Chicago, Chicago, IL, USA.
Department of Ecology & Evolution, University of Chicago, Chicago, IL, USA.
Bioessays. 2015 Sep;37(9):968-74. doi: 10.1002/bies.201500047. Epub 2015 Jul 22.
A recent analysis of the genomes of Darwin's finches revealed extensive interspecies allele sharing throughout the history of the radiation and identified a key locus responsible for morphological evolution in this group. The radiation of Darwin's finches on the Galápagos archipelago has long been regarded as an iconic study system for field ecology and evolutionary biology. Coupled with an extensive history of field work, these latest findings affirm the increasing acceptance of introgressive hybridization, or gene flow between species, as a significant contributor to adaptive evolution. Here, we review and discuss these findings in relation to both classical work on Darwin's finches and contemporary work showing similar evolutionary signatures in other biological systems. The continued unification of genomic data with field biology promises to further elucidate the molecular basis of adaptation in Darwin's finches and well beyond.
最近对达尔文雀基因组的分析揭示，在整个辐射演化历史中，物种间存在广泛的等位基因共享，并确定了一个负责该类群形态演化的关键基因座。达尔文雀在加拉帕戈斯群岛的辐射演化，长期以来一直被视为野外生态学和进化生物学的标志性研究系统。结合广泛的野外工作历史，这些最新发现证实了渐渗杂交（即物种间的基因流动）作为适应性进化的重要贡献者，越来越被人们所接受。在这里，我们结合关于达尔文雀的经典研究以及在其他生物系统中显示出类似进化特征的当代研究，对这些发现进行回顾和讨论。基因组数据与野外生物学的持续结合，有望进一步阐明达尔文雀及其他更多生物适应性的分子基础。
