Comparative feeding ecology of mouse lemurs (Microcebus spp.) in northwestern Madagascar in view of species-specific biographic patterns

从物种特异性传记模式角度比较马达加斯加西北部小鼠狐猴（Microcebus spp.）的摄食生态学

• 批准号: 162120733
• 负责人: Professorin Dr. Ute Radespiel
• 金额: --
• 依托单位: Institut für Zoologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/162120733?language=en
• 关键词: Comparative; feeding; ecology; mouse; lemurs

The understanding of the factors that determine and influence the biogeography of species is of central importance in the field of biodiversity research. Madagascar is a recently gaining much attention in this respect, since this island is characterised by an unusually high proportion of endemic species, many but not all of which having very small distributions. The aim of this study is to investigate the explanatory potential of three macroecological hypotheses for the understanding of the divergent distribution patterns of lemurs, a taxonomic group of 100% endemics which are highly threatened by habitat destruction. Two partially sympatric mouse lemur species in northwestern Madagascar were chosen as model organisms. The hypotheses of interest are 1) the spectrum of used resources (i.e., feeding niche width and thereby the ecological plasticity) differs between species with divergent distributions, 2) ongoing interspecific competition for food may explain the divergent distributions, and/or 3) the species-specific dispersal pattern may explain the divergent distributions. Behavioural, ecological and experimental data have been collected in the field and will now be analysed and supplemented by chemical analyses on food resources, hairs and genetic data on free-living mouse lemur populations. Together with other analyses on datasets collected in my working group, this project will allow us to test all major ecological explanations for the divergent biogeographic patterns of our lemur models.

对决定和影响物种地理的因素的理解在生物多样性研究领域具有核心重要性。马达加斯加最近在这方面受到了很多关注，因为这个岛屿的特点是特有物种的比例异常高，其中许多但不是所有物种的分布范围都很小。本研究的目的是调查的解释潜力的三个宏观生态学假说的理解狐猴，一个分类组的100%的地方性高度威胁栖息地破坏的不同分布模式。选择马达加斯加西北部的两种部分同域分布的鼠狐猴作为模式生物。感兴趣的假设是1）所使用的资源的频谱（即，取食生态位宽度和生态可塑性）在不同分布的物种之间存在差异; 2）持续的种间食物竞争可以解释不同的分布;和/或3）种特有的扩散模式可以解释不同的分布。已经在实地收集了行为、生态和实验数据，现在将通过对食物资源、毛发和自由生活的鼠狐猴种群遗传数据的化学分析进行分析和补充。与我的工作组收集的数据集的其他分析一起，这个项目将使我们能够测试我们的狐猴模型的不同地理分布模式的所有主要生态解释。