Patterns and Processes of Marine Speciation: A Case Study of Indo-West Pacific Cowries

海洋物种形成的模式和过程：印度-西太平洋贝母的案例研究

• 批准号: 9807316
• 负责人: Gustav Paulay
• 金额: $ 16万
• 依托单位: University of Guam
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-15 至 2000-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9807316&HistoricalAwards=false
• 关键词: Patterns; Processes; Marine; Speciation; Case

9807316 Paulay We will generate a robust, complete phylogeny using two mitochondrial genes (COI and 16S) for a well documented and diverse group of marine gastropods, the cowries. This phylogeny will establish the patterns of speciation and test hypotheses of diversification by establishing the relative importance of different arenas and speciation mechanisms. Cowries are an ideal group for testing speciation processes in the Indo-West Pacific because 1.) they are extremely diverse; there are 148 extant species of Indo-West Pacific cowries that have been derived from 15 independent lineages, one of which has given rise to 69 species since the Miocene, 2.) they have a good fossil record, 3.) their geographic ranges are well-documented, 4.) many sister species still retain non-overlapping distributions, 5.) geographic variation is common within many species, and 6.) an initial phylogeny is already in hand. Cowries epitomize the large and rapid evolutionary radiations that so characterize the Indo-West Pacific. The proposed work will be the first major molecular phylogenetic attempt to analyze patterns of speciation in this most diverse marine region, and, as it is in a group of organisms with great phylogeographic power, it promises to test numerous hypotheses about Indo-West Pacific biogeography and diversification.

小行星9807316 我们将使用两个线粒体基因（COI和16 S）为一个有据可查的和多样化的海洋腹足类，贝壳，产生一个强大的，完整的基因组。 该系统将通过确定不同领域和物种形成机制的相对重要性，建立物种形成模式并检验多样化假设。奶牛是测试印度-西太平洋物种形成过程的理想群体，因为1。它们极其多样化，现存的印度-西太平洋贝有148种，它们来自15个独立的谱系，其中一个谱系自中新世以来已经产生了69种，2。他们有一个很好的化石记录，3。它们的地理分布范围是有据可查的，4。许多姊妹种仍然保持不重叠的分布，5.）地理变异在许多物种中是普遍的，6.）最初的系统发育史已经在手中。 牛仔集中体现了印度-西太平洋巨大而快速的进化辐射。 拟议中的工作将是第一个主要的分子系统发育尝试，以分析在这个最多样化的海洋区域的物种形成模式，而且，因为它是在一组具有巨大的地理力量的生物，它有望测试许多假设印度-西太平洋地理和多样化。