Collaborative Research: Sound Source Localization by Fishes

本研究将探讨鱼类的声源定位，以确定鱼类如何整合各种声音线索，以适当地表现在复杂的声学环境。 有证据表明，声源定位的能力在哺乳动物、两栖动物、鸟类和爬行动物中很常见，但令人惊讶的是，鱼类是否以同样的方式定位声源尚不清楚。 因此，鱼类声源定位仍然是生物学和听觉科学中的一个重要课题。 本研究将测试几个相关理论的主要假设，包括鱼类声源定位的主导理论。 的plainfin见习鱼（Porichthys notatus），其中女性找到男性的声音，男性生产，将被用作一般模式，调查鱼类如何本地化水下声源。 将检验两个假设：1）鱼朝向声学粒子运动的方向以定位声源（包括声源定位的主导理论的若干相关理论的主要假设），以及2）粒子运动和声压检测（通过鱼鳔）两者对于声源定位都是必要的，但是单独的两者都是不够的。 作为这项研究计划的一个组成部分，研究生和本科生都将接受培训和指导。 此外，关于这项研究的年度公开讲座将在加州大学博德加海洋实验室举行。

This research will investigate sound source localization by fishes to ascertain how fish integrate the various sound cues available to them to behave appropriately in complex acoustic environments. Evidence suggests that the capacity for sound source localization is common to mammals, amphibians, birds and reptiles, but surprisingly it is not known whether fishes locate sound sources in the same manner. Therefore, sound source localization by fishes remains an important topic in biology and in the hearing sciences. This study will test the major assumptions of several related theories, including the leading theory of sound source localization by fishes. The plainfin midshipman fish (Porichthys notatus), in which females locate males by sounds that the males produce, will be used as a general model to investigate how fishes localize underwater sound sources. Two hypotheses will be tested: 1) fish orient to the direction of acoustic particle motion to localize sound sources (a major assumption of several, related theories including the leading theory of sound source localization), and 2) both particle motion and sound pressure detection (via the swimbladder) are necessary for sound source localization, but neither alone is sufficient. As an integral part of this research program, both graduate and undergraduate students will receive training and mentoring. In addition, annual public lectures regarding this research will be presented at the University of California Bodega Marine Laboratory.