Population genetics of the endangered Colombian turtle Podocnemis lewyana and molecular phylogney of the ancient South American and Malagsy river turtles (Reptilia: Testudines: Podocnemididae)

濒临灭绝的哥伦比亚龟 Podocnemis lewyana 的种群遗传学和古代南美和马达加斯加河龟的分子系统发育（爬行纲：睾丸纲：Podocnemididae）

• 批准号: 58058566
• 负责人: Professor Dr. Uwe Fritz
• 金额: --
• 依托单位: Museum für Tierkunde
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/58058566?language=en
• 关键词: Population; genetics; endangered; Colombian; turtle

I – Population genetic structure of Podocnemis lewyanaThe large Colombian turtle Podocnemis lewyana (IUCN Red List category “endangered”; Appendix II CITES convention) is threatened by habitat loss and persecution. We aim to investigate its genetic diversity, gene flow, and differentiation of populations throughout the species’ range using multiple nuclear microsatellite loci and a quickly evolving mitochondrial marker (control region) for designing priority populations for conservation that allow minimizing loss of genetic diversity.II – Molecular phylogeny of the family Podocnemididae (Testudines, Reptilia)Podocnemididae is an ancient group of turtles known since the Cretaceous. The eight species have relictual distributions (South America, Madagascar); all are endangered. Using mtDNA (12S rRNA, cyt-b) and nDNA sequences (cmos) we aim to (i) provide the first complete molecular phylogeny, (ii) reinvestigate the zoogeography (including estimation of divergence times of species), and (iii) test whether two distinct morphotypes of Podocnemis erythrocephala differ genetically, a question of high conservational relevance.

一-群体遗传结构的Podocnemis lewyana大哥伦比亚龟Podocnemis lewyana（世界自然保护联盟红色名录类别“濒危”;附录二濒危野生动植物种国际贸易公约）是由栖息地丧失和迫害的威胁。我们的目的是调查其遗传多样性，基因流，并利用多个核微卫星位点和快速进化的线粒体标记在整个物种的范围内的群体分化（控制区）设计优先保护种群，使遗传多样性的损失最小化。II -Podocnemidae科的分子遗传学（龟类，爬行动物）Podocnemididae是一个古老的组龟已知自白垩纪。这8个物种有残余分布（南美洲，马达加斯加）;所有濒危。利用mtDNA（12 S rRNA，cyt-b）和nDNA序列（cmos），我们的目标是（i）提供第一个完整的分子系统发育，（ii）重新调查动物地理学（包括估计物种的分歧时间），（iii）测试是否两个不同的形态型的Podocnemis erythrocephala的遗传差异，一个高度保守的相关性问题。