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

9310802 Olmstead这项研究涉及使用系统和种群水平的遗传分析来研究波多黎各两栖动物的三种濒危物种。线粒体和核基因都将被测序，博物馆的灭绝种群标本将被用于分析。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一些物种有效，包括濒临灭绝的怀俄明蟾蜍、受威胁的波多黎各冠蟾蜍和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，人们正在努力监测每个物种的数量。不幸的是，这些监测项目很少或根本没有关于这些物种遗传变异的信息。遗传数据对任何保护和恢复工作都很重要，因为它们提供了遗传上独特的种群和兄弟物种的信息，以及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. ***