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Collaborative Research: Evolution of long-distance communication in vocal rodents

合作研究：发声啮齿动物远距离交流的进化

基本信息

批准号：
1754332
负责人：
Tobias Riede
金额：
$ 19.38万
依托单位：
Midwestern University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2018
资助国家：
美国
起止时间：
2018-08-01 至 2023-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1754332&HistoricalAwards=false
关键词：
Collaborative Research Evolution long distance

项目摘要

Vocal communication is fundamental to the fabric of social life. Animals produce a wide variety of sounds to mediate critical interactions, including advertisement to potential mates and competitors. But why and how do distinct species sound different and what factors contribute to such differences? The widespread importance of acoustic signals in mate recognition and speciation requires a deeper understanding of the causes and consequences of signal divergence. In this project, the physiological mechanisms underlying sound production across an ecologically diverse group of vocal rodents will be studied. The researchers will test the hypothesis that changes in sound production mechanisms are mediated by variation in social organization and spacing. These studies promise to provide important insights into the evolutionary interplay between the physiology of senders, receivers, and their socio-spatial ecologies. The proposal provides training opportunities for a postdoctoral scholar, research technician, and student participants who are underrepresented in science, technology, engineering, and mathematical sciences. In addition, the work develops inquiry-based learning modules that equip middle school classrooms with animals, microphones, and sound analysis software to foster critical thinking skills. The research will be supplemented with outreach at regional events and virtual live streaming of experiments in an indoor animal-tracking arena to allow the public to engage in scientific discovery. Digital audio, video, and morphological specimens will be permanently archived for open access in public repositories.A central challenge in the study of behavior is connecting functional and mechanistic explanations for the evolution of complex phenotypes. Advertisement vocalizations used in reproductive contexts are among the most diverse and elaborate displays in the animal kingdom, yet understanding of the physiological mechanisms driving acoustic divergence is lacking. The goal of the proposed research is to integrate functional and mechanistic perspectives in senders, receivers, and the environment to understand the evolution of acoustic signals in relation to variation in social organization. Rodents represent over 40% of mammalian diversity and exhibit extreme variation in social structure and space use, even among closely related species. Investigators will leverage the exceptional divergence in social organization and acoustic behavior found in one clade to dissect the sound production mechanisms underlying signal diversification. The work integrates approaches from the field, laboratory, and mesocosm, including high-resolution acoustic recordings and laryngeal morphometrics, auditory electrophysiology, sound propagation experiments, and animal tracking studies to evaluate the socio-spatial context of vocal production. The findings will provide a rich dataset to investigate the evolution of communication systems in relation to variation in social organization, with broad implications for other taxa across all signaling modalities.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

声音交流是社会生活的基础。动物会发出各种各样的声音来调解关键的互动，包括向潜在的配偶和竞争对手做广告。但是，为什么不同的物种听起来不同，又是如何不同的，是什么因素导致了这种差异呢？声音信号在配偶识别和物种形成中的广泛重要性需要更深入地了解信号分歧的原因和后果。在这个项目中，将研究生态多样性的发声啮齿动物群体发声的生理机制。研究人员将测试这一假设，即声音产生机制的变化是由社会组织和空间的变化介导的。这些研究承诺提供重要的见解，进化之间的相互作用的生理学，接收器，和他们的社会空间生态。该提案为博士后学者、研究技术人员和在科学、技术、工程和数学科学领域代表性不足的学生提供了培训机会。此外，这项工作还开发了基于探究的学习模块，为中学教室配备动物，麦克风和声音分析软件，以培养批判性思维技能。这项研究将辅之以区域活动的推广和室内动物跟踪竞技场实验的虚拟直播，以使公众能够参与科学发现。数字音频、视频和形态学标本将被永久存档，供公共资源库开放获取。行为研究的一个核心挑战是将复杂表型进化的功能和机制解释联系起来。生殖环境中使用的广告发声是动物王国中最多样化和最精细的显示，但缺乏对驱动声学分歧的生理机制的理解。拟议的研究的目标是整合功能和机械的角度来看，接收器和环境，以了解在社会组织的变化声信号的演变。啮齿动物占哺乳动物多样性的40%以上，在社会结构和空间利用方面表现出极大的差异，即使在密切相关的物种之间也是如此。研究人员将利用在一个分支中发现的社会组织和声学行为的特殊差异来剖析信号多样化背后的声音产生机制。这项工作整合了来自现场，实验室和围隔生态系统的方法，包括高分辨率声学记录和喉部形态测量，听觉电生理学，声音传播实验和动物跟踪研究，以评估发声的社会空间背景。研究结果将提供丰富的数据集，以调查通信系统的演变与社会组织的变化，具有广泛的影响，为其他类群在所有的信号models.This奖项反映了NSF的法定使命，并已被认为是值得通过评估使用基金会的智力价值和更广泛的影响审查标准的支持。