Multisensory integration in teleost fishes

硬骨鱼的多感官整合

• 批准号: 261405-2008
• 负责人: Higgs, Dennis
• 金额: $ 1.97万
• 依托单位: University of Windsor
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=394997
• 关键词: Multisensory; integration; teleost; fishes

The ability of animals to accurately detect and respond to stimuli in their natural environment typically depends on integration of inputs from many different sensory systems. Despite this reliance on multiple sensory inputs much of what we know about sensory function is based on studies of sensory systems in isolation. We know much less about how animals actually integrate information to obtain an overall picture of their external environment. The proposed research will attempt to address this inequity by examining responses of fish first to auditory stimuli and then to stimuli from other systems to see how other systems interact with hearing. This will first be conducted in the round goby (Neogobius melanostomus), a highly invasive fish in Canada. We will test responses of gobies using behavioural and physiological approaches to ascertain how the brain processes information from many sensory channels and how this processing affects the ability of the goby to respond to the stimulus. We will then assess how these multisensory responses change as gobies mature into reproductive adults to understand how hormones can remodel sensory systems and brain areas. Assessment of these responses in the round goby will be interesting in its own right, explaining how vertebrates process multiple types of information, but will also be useful in designing mitigation strategies for this invasive species. Upon successful completion of the work in the goby we will then ask similar questions in two other fish species to determine the generality of our observed responses.

动物对自然环境中刺激的准确检测和反应的能力通常取决于许多不同感觉系统的输入的整合。尽管这种依赖于多种感觉输入，但我们对感觉功能的大部分了解都是基于对感觉系统的孤立研究。我们对动物如何整合信息以获得其外部环境的整体情况知之甚少。这项拟议的研究将试图通过首先检查鱼类对听觉刺激的反应，然后对来自其他系统的刺激的反应来解决这种不公平问题，以了解其他系统如何与听力相互作用。这将首先在加拿大的一种高度入侵的鱼类--圆形虎鱼(Neogobius Melanostomus)身上进行。我们将使用行为和生理方法测试虾虎鱼的反应，以确定大脑如何处理来自许多感官通道的信息，以及这种处理如何影响虾虎鱼对刺激的反应能力。然后，我们将评估这些多感官反应如何随着虾虎鱼成熟为生殖成体而变化，以了解激素如何重塑感觉系统和大脑区域。对圆形虎鱼的这些反应的评估本身就很有趣，它解释了脊椎动物是如何处理多种类型的信息的，但也将有助于为这种入侵物种设计缓解策略。在成功完成虾虎鱼的工作后，我们将对其他两种鱼类提出类似的问题，以确定我们观察到的反应的一般性。