Dissertation Research: Systematic and Population Genetic Analyses of Declining Bufonids: A Molecular Genetic Approach to Their Conservation

9310802奥姆斯特德这项研究涉及使用系统和种群一级的遗传分析来研究三种濒危的波多黎各两栖动物物种。将对线粒体和核基因进行测序，并将使用灭绝种群的博物馆标本进行分析。许多两栖动物，包括蟾蜍，正在以惊人的速度减少。积极的、多方面的保护计划对几个物种有效，包括濒危的怀俄明州蟾蜍，受到威胁的波多黎各冠蛙，以及科罗拉多州的北方蟾蜍种群。所有这些物种的数量都在下降，而且正在努力监测每个物种的数量。不幸的是，监测程序在这些物种的遗传变异信息很少或根本没有信息的情况下进行。遗传数据对任何保护和恢复工作都很重要，因为它们提供了关于遗传独特的种群和兄弟物种的信息，以及关于缺乏遗传变异和近亲繁殖风险增加的信息。***

9310802 Olmstead This research involves the use of systematic and population level genetic analyses to study three endangered species of Puerto Rican amphibians. Both mitochondrial and nuclear genes will be sequenced, and museum specimens of extinct populations will be used in the analysis. %%% Many amphibians, including toads, are declining at an alarming rate. Active, multifaceted conservation programs are in effect for several species, including the endangered Wyoming toad, the threatened Puerto Rican crested toad, and boreal toad populations in Colorado. Populations of all these species are declining, and there are on going efforts to monitor each species' populations. Unfortunately, the monitoring programs are occurring with little or no information on genetic variation within these species. Genetic data are important to any conservation and restoration effort because they provide information on genetically unique populations and sibling species as well as information on lack of genetic variation and increased risk from inbreeding. ***