Evolution of the Pharyngeal Jaw Apparatus in Ray-Finned Fishes

射线鳍鱼咽颌装置的进化

• 批准号: 0076436
• 负责人: Peter Wainwright
• 金额: $ 20.92万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-08-15 至 2004-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0076436&HistoricalAwards=false
• 关键词: Evolution; Pharyngeal; Jaw; Apparatus; Ray

The ecological and evolutionary success of bony fishes, the most speciose group of vertebrates, is associated with extensive diversity in feeding biology that is facilitated by versatile systems of prey capture and processing. This research will elucidate mechanisms of function in the pharyngeal jaw apparatus of ray-finned fishes, the primary device used in manipulating, chewing, and transporting prey during feeding. The pharyngeal jaw apparatus is a poorly understood, complex system of modified gill-arch muscles and bones that has underdone extensive modification during fish evolution. Using recordings of muscle activity and a new method for visualizing skeletal motion inside the skull, sonometric-ultrasound, this research will test models of pharyngeal jaw function in several major groups of fishes in order to establish the mechanisms of jaw action and its evolution within the largest group of living vertebrates. This research will address basic questions about how the muscle-skeleton linkage system of the pharyngeal jaw apparatus functions, and how it has been modified during evolution to produce novel function and diversity in feeding biology. The complexity and diversity of this system will provide the raw material for exposing general principles of neuromuscular evolution.

骨鱼（最特异性的脊椎动物群）的生态和进化成功与饲喂生物学的广泛多样性有关，这是由多功能的猎物捕获和加工系统促进的。 这项研究将阐明射线污染鱼类咽嘴中的功能机制，这是用于操纵，咀嚼和运输猎物在进食过程中使用的主要装置。 咽颌骨是一种知名度不佳的，复杂的修饰gar骨肌肉和骨骼的复杂系统，在鱼进化过程中的变化不足。 使用肌肉活动的记录和一种新的方法来可视化颅骨内部的骨骼运动，并进行了术语，这项研究将在几个主要的鱼类中测试咽颌骨功能的模型，以建立最大生命脊椎动物组内的颌骨作用及其进化的机制。 这项研究将解决有关咽颌骨功能的肌肉骨骼连锁系统的基本问题，以及如何在进化过程中对其进行修改以在进食生物学方面产生新功能和多样性。 该系统的复杂性和多样性将为揭示神经肌肉进化的一般原理提供原材料。