Collaborative Research: Molecular Phylogenetics of the Globally Distributed Polychaete, Polydora cornuta

南佛罗里达大学的Stephen Karl博士和坦帕大学的Stanley Rice博士获得了deb03219424 / 0317890a的资助，利用线粒体编码的细胞色素氧化酶c亚基I基因（COI）的DNA序列数据，揭示了多毛目蠕虫Polydora cornuta全球种群之间的进化关系。目的是确定种群在遗传上是不同的（因此可能是不同的物种），还是实际上是一个分布在世界各地的单一物种。样本将在北美（特别是东海岸）和加勒比海、欧洲、南美、澳大利亚和新西兰集中收集。一旦确定了角藻种群的全球系统发育，这些数据就可以用于开发用于研究基因流动和物种形成的模型海洋系统。最终，这项研究将有助于更好地理解海洋物种形成的机制，以及生殖不相容、遗传分化和形态变异之间的相互关系。

Abstract DEB-03219424/0317890A grant has been awarded to Dr. Stephen Karl of University of South Florida and Stanley Rice of the University of Tampa to uncover evolutionary relationships among global populations of the polychaete worm, Polydora cornuta using DNA sequence data from the mitochondrially encoded cytochrome oxidase c subunit I gene (COI). The goal is to determine whether populations are genetically distinct (and therefore may be separate species) or are in fact a single species with world-wide distribution. Samples will be collected intensively around North America (particularly the east coast) and from the Caribbean, Europe, South America, Australia, and New Zealand. Once a global phylogeny of P. cornuta populations is determined, the data can be used to develop of a model marine system for the study of gene flow and speciation. Ultimately, the study will lead to a better understanding of mechanisms of speciation in the sea and how reproductive incompatibility, genetic divergence, and morphological variation are interrelated.