Dissertation Research: The Role of Landscape Barriers in Population Structure of a Neotropical Lekking Forest Bird

[00:73432] kirsch法医DNA分析彻底改变了我们基于少量遗传物质识别个体的能力。类似的技术为研究野生种群的遗传提供了一个有价值的新工具，其精确度达到了前所未有的程度。威斯康星大学麦迪逊分校开发的一项新技术将用于确定热带森林鸟类（马纳库斯马纳库斯）的亲子关系和后代的传播。通过比较不同环境下该物种的DNA指纹图谱，可以确定地理因素对其传播的影响，从而实现本研究的目的。这些目标是：确定(1)鸟类之间的亲缘关系，(2)它们和它们的后代分散的距离，以及(3)种群之间分化的程度。这项研究直接解决了地形是否限制了物种的扩散，如果是这样，是否更多的地形变化会导致基因上更独特的种群。该研究的方法适用于任何物种，包括人类，并为识别和应对栖息地改变对物种的威胁提供了至关重要的信息。因此，项目成果将作为识别濒危物种和随后设计保护区的样板。

0073432KirschForensic DNA analysis has revolutionized our ability to identify individuals based on small amounts of genetic material. Similar technology offers a valuable new tool for studying the genetics of wild populations with an unprecedented degree of precision. A novel technique developed at the University of Wisconsin-Madison will be used to determine the parentage and dispersal of offspring in a tropical forest bird (Manacus manacus). By comparing the DNA fingerprints of this species in different environments, geographic influences on dispersal of these birds can be ascertained, thus realizing the goals of this study. These goals are: to determine (1) relatedness among the birds, (2) how far they and their offspring disperse, and (3) to what extent populations have diverged from each other. This investigation addresses directly the fundamental questions of whether topography limits dispersal and if so, whether more variable landscapes lead to genetically more distinct populations. The methodology of the study is applicable to any species, including humans, and provides information crucial to recognizing and meeting threats to species that arise from habitat alteration. Therefore, the project outcome will serve as a model for the recognition of species-at-risk and for the subsequent design of protected areas.