Energetic, Cardiovascular, and Respiratory Aspects of Shark Swimming

这些研究努力处理心脏和心脏之间的关系， 输出和心包压力在游泳鲨鱼和继续 初步发现心包和静脉增强阳性 活动中的压力。 使用留置导管， 测量血压并测定呼吸血气 在休息和活跃的鲨鱼水平，并确定率 乳酸水平所指示的厌氧生活。 最后我们将 开始检查P0、温度和游泳速度的影响 对游泳三角鱼耗氧率的影响， 它的有氧活动范围。 这项研究涉及鲨鱼运动的能量学 使用水洞跑步机， 同时测量血流量、氧气利用率 在不同的游泳速度下的游泳动作、心率等。 这一结果对我们理解生物力学有重要意义。 在鱼里游泳 Louis E.伯内特（圣地亚哥大学）计划研究 血液气体运输在一些鱼类（主要是鲨鱼）， 在水洞跑步机/呼吸计中锻炼。 特别 重点将放在pH值和二氧化碳的作用上 调节氧气输送到组织的水平。

The research efforts deal with the relationship between cardiac output and pericardial pressure in swimming sharks and continues preliminary findings of positive pericardial and enhanced venous pressures during activity. Using indwelling catheters we will measure blood pressures and determine respiratory blood gas levels in resting and active sharks and determine rates of anaerobiosis as indicated by lactate levels. Finally we will begin to examine effects of P0 , temperature, and swimming speed on the oxygen consumption rate of swimming Triakis and determine its aerobic scope for activity. The research deals with the energetics of locomotion in sharks using a water tunnel treadmill that has been adopted for simultaneous measurement of bloodflow, oxygen utililization, swimming motions, heart rate, etc. at various swimming speeds. The results are important to our understanding of biomechanics of swimming in fish. Dr. Louis E. Burnett (University of San Diego) plans to study blood gas transport in a number of fish (mainly sharks) during exercise in a water tunnel treadmill/respirometer. Particular emphasis will be placed on the role of pH and carbon dioxide levels in regulating oxygen delivery to the tissues.