DISSERTATION RESEARCH: Behavioral and neural mechanisms of altitudinal replacement in singing mice

论文研究：歌唱小鼠的高度替换的行为和神经机制

• 批准号: 0909769
• 负责人: Steven Phelps
• 金额: $ 1.5万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-07-01 至 2011-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0909769&HistoricalAwards=false
• 关键词: DISSERTATION; RESEARCH; Behavioral; neural; mechanisms

The proposed research will use Neotropical singing mice (genus Scotinomys) to explore how behavioral and neural mechanisms moderate competitive interactions between species and, in turn, limit species distributions. The objectives of the study are to 1) investigate how Alston's singing mouse (S. teguina) perceives and responds to the songs of a closely related and dominant species, the Chiriqui singing mouse (S. xerampelinus); and 2) to identify the neural substrates that contribute to between-species dominance interactions. The research involves both laboratory and field playback experiments in Costa Rican montane cloud forests where S. teguina is found alone (allopatric) or with S. xerampelinus (sympatric). The integrative nature of the study enables us to link changes in song perception at the neural level to changes in distribution at the geographic level. Examining the mechanisms and function of mammalian vocalization also presents exciting opportunities to identify convergent and divergent pathways of perception in birds and other vertebrate taxa. The research involves substantial outreach to elementary and middle schools in Costa Rica and Gainesville, FL. Lastly, the work will help forge international collaborations throughout Latin America.

这项拟议的研究将使用新热带鸣叫小鼠(Scotinomys属)来探索行为和神经机制如何调节物种之间的竞争互动，进而限制物种分布。这项研究的目的是1)调查阿尔斯顿鸣鼠(S.teguina)如何感知和回应一种密切相关的优势物种Chiriqui鸣鼠(S.xerampelinus)的歌声；以及2)确定有助于物种间优势相互作用的神经底物。这项研究涉及在哥斯达黎加山地云雾森林中进行的实验室和野外回放实验，在那里，特圭纳被单独发现(异地)或与沙门氏菌一起被发现(共处)。这项研究的综合性使我们能够将神经层面上歌曲知觉的变化与地理层面上的分布变化联系起来。研究哺乳动物发声的机制和功能也提供了在鸟类和其他脊椎动物分类中识别汇聚和发散的感知途径的令人兴奋的机会。这项研究涉及到哥斯达黎加和佛罗里达州盖恩斯维尔的中小学。最后，这项工作将有助于在整个拉丁美洲建立国际合作。