Phylogenomic insights into a non-model adaptive radiation of freshwater snails from Sulawesi (Indonesia)
对苏拉威西岛(印度尼西亚)淡水蜗牛非模型适应性辐射的系统基因组学见解
基本信息
- 批准号:510142099
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Research Grants
- 财政年份:
- 资助国家:德国
- 起止时间:
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
Ancient lakes, i.e. lakes that existed for more than 100,000 years, are key sources of freshwater biodiversity and hotspots of endemism. Their considerably old age make them suitable to study past colonization histories and as well as intralacustrine diversification/speciation dynamics and their underlying extrinsic and intrinsic factors. The ultimate aim of this project is to improve the understanding of the genomic basis of Sulawesi’s endemic freshwater snail radiation and which role trophic specialization has played in shaping the present-day fauna inhabiting the ancient Malili lake system as well as Lake Poso. Here, genomic data derived from whole-genome sequencing will be generated for all Tylomelania species, i.e. riverine and lacustrine taxa, and representatives of its sister genus Pseudopotamis. These data will be used to assemble mitogenomes, but more importantly, to identify SNPs that will be used to infer a robust and dated backbone phylogeny of this genus. Derived phylogenetic relationships will help to 1) reconstruct the colonization history of Tylomelania across the island and into the lakes, 2) study the extent of hybridiziation within these lakes but also between riverine and lacustrine species, and 3) assess how morphospace (i.e. shell forms and radula morphs) has changed over time in the course of habitat transitions.
古湖泊,即存在超过10万年的湖泊,是淡水生物多样性和地方性热点的主要来源。他们相当老的年龄,使他们适合研究过去的殖民历史,以及intralacutrine多样化/物种形成动态及其内在和外在因素。该项目的最终目的是提高对苏拉威西特有淡水蜗牛辐射的基因组基础的认识,以及营养专业化在形成居住在古马利利湖系统以及波索湖的现今动物群方面所起的作用。在这里,来自全基因组测序的基因组数据将产生所有的Tylomelania物种,即河流和湖泊类群,其姐妹属Pseudopotamis的代表。这些数据将用于组装有丝分裂基因组,但更重要的是,以确定SNP,将用于推断该属的一个强大的和过时的骨干同源性。衍生的系统发育关系将有助于1)重建Tylomelania在岛上的殖民历史,并进入湖泊,2)研究这些湖泊内的杂交程度,以及河流和湖泊物种之间的杂交程度,3)评估形态空间(即壳的形式和齿舌形态)如何随着时间的推移在栖息地过渡过程中发生变化。
项目成果
期刊论文数量(0)
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Dr. Björn Stelbrink其他文献
Dr. Björn Stelbrink的其他文献
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{{ truncateString('Dr. Björn Stelbrink', 18)}}的其他基金
Population and phylogenomics of a snail radiation in Sulawesi’s ancient Malili lakes
苏拉威西古马里利湖中蜗牛辐射的种群和系统发育组学
- 批准号:
429588538 - 财政年份:2019
- 资助金额:
-- - 项目类别:
Research Fellowships
Colonization and diversification dynamics in ancient lake species flocks inferred from meta-analyses on freshwater gastropods
从淡水腹足动物荟萃分析推断古代湖泊物种群的定殖和多样化动态
- 批准号:
324310660 - 财政年份:2016
- 资助金额:
-- - 项目类别:
Research Grants
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