Comparative Biogeography of the Lesser Sunda Islands of Indonesia: Diversification Across a Wallacean Two-Way Filter Barrier

印度尼西亚小巽他群岛的比较生物地理学：跨越华莱士双向过滤屏障的多样化

基本信息

批准号：
1258185
负责人：
Jimmy McGuire
金额：
$ 49.5万
依托单位：
University of California-Berkeley
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2013
资助国家：
美国
起止时间：
2013-02-01 至 2017-01-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1258185&HistoricalAwards=false
关键词：
Comparative Biogeography Lesser Sunda Islands

项目摘要

The Lesser Sunda Archipelago occurs as a double arc of islands extending between Java and Bali in the west and New Guinea in the east. This is one of the most geologically active and tectonically complex regions in the world. The Lesser Sundas may act as "stepping stones" between the Sunda Shelf (Malay Peninsula, Borneo, Sumatra, Java, and Bali) and Sahul Shelf (New Guinea, Australia), thereby forming a two-way filter for organisms dispersing between two of the world's great biogeographical realms, Asia and Australo-Papua. This study investigates speciation and biogeography of this region by applying phylogenetic and biogeographic methodologies, along with coalescent-based population genetic approaches. The study is comparative, investigating 12 amphibian and reptile species complexes.Novel to this program is the development of 200 nuclear DNA loci for each focal taxon using a bait-capture approach that harnesses the power of Next-Gen DNA sequencing. Loci will be analyzed using phylogenetic and population genetic methods to evaluate broad biogeographic patterns across SE Asia, patterns of diversification thoughout the Lesser Sundas, gene flow at lineage boundaries, and to estimate divergence times for speciation events within the archipelago. Results will inform Indonesian agencies tasked with protecting areas of endemism in this Global Conservation hotspot.

较小的Sunda群岛是在西部的爪哇和巴厘岛和东部的新几内亚之间延伸的岛屿的双弧。这是世界上地质活跃和构造最复杂的地区之一。较小的Sundas可以在Sunda货架（马来半岛，婆罗洲，苏门答腊，贾瓦和巴厘岛和巴利）和萨哈尔·架子（Sahul Shelf）（澳大利亚新几内亚）之间充当“垫脚石”，从而形成了一个双向滤波器，用于在世界上两个伟大的生物地理位置图中的生物体中分配的有机体，以供有机体播放。这项研究通过应用系统发育和生物地理方法以及基于共同的种群遗传学方法来研究该地区的形成和生物地理学。这项研究是比较的，研究了12个两栖动物和爬行动物物种复合物。该程序的新闻是使用诱饵捕获方法开发了200个核DNA基因座，该方法可以利用下一代DNA测序的力量。将使用系统发育和种群遗传学方法分析基因座，以评估跨SE亚洲的广泛生物地理模式，多样化的模式，尽管较小的Sundas，谱系边界处的基因流量以及群众中物种事件的分歧时间。结果将告知印尼机构在这个全球保护热点中保护原本主义领域的任务。