Dissertation Research: Causes and Consequences of Asymmetric Sound Fields

PI: Bradbury, Jack；题目：“论文研究：动物交流中不对称声场的原因和后果”声学介导的配偶选择研究，包括之前对艾草松鸡的研究，都集中在光谱和时间信号组成作为交配成功预测因素的作用上。利用我们为研究声辐射而开发的一种技术，研究人员发现了另一种声学特征，几乎可以肯定，这种声学特征具有很强的适应性。去年春天采集的试验数据的初步结果显示，与之前在脊椎动物中观察到的声音辐射场截然不同，声音辐射场是不对称的和定向的。这些结果也强烈表明雄性艾草松鸡有一种新的、显著的机制来控制这种方向性。本研究旨在进一步阐明在雄性艾草松鸡交配成功的背景下，艾草松鸡发声辐射和模式操纵的机制。

Non-technical Abstract IBN-9701201 PI: Bradbury, Jack; Danzger, Marc UC San Diego Title: "Dissertation Research: Causes and consequences of asymmetric sound fields in animal communication" Studies of acoustically mediated mate choice, including previous studies of the sage grouse, have concentrated on the role of spectral and temporal signal composition as predictors of mating success. Using a technique that we developed for the study of acoustic radiation, researchers have identified another acoustic trait that almost certainly has strong fitness consequences. Preliminary results of pilot data taken last spring reveal starkly asymmetric and directional sound radiation fields unlike any previously observed in a vertebrate. These results also strongly suggest that male sage grouse have a novel and remarkable mechanism to control this directionality. The research proposed here is designed to further elucidate the mechanism of sage grouse vocalization radiation and pattern manipulation in the context of male sage grouse mating success. .