动态翔解了鱼的动态身体加速和能量
Melinda G Conners1,2, Jonathan A Green3, Richard A Phillips4
1School of Marine and Atmospheric Sciences, Stony Brook University, NY 11794-5000, USA.
The Journal of experimental biology
|September 9, 2024
概括
使用加速度计估计动物能量消耗 (EE) 需要对像鱼这样的物种采用新的指标. 动态飞行期间的身体旋转,而不是整体动态身体加速 (ODBA),更好地预测了这些鸟类的EE.
科学领域:
- 动物生态动物生态学
- 生物能源学 生物能源学
- 生物制造技术的技术.
背景情况:
- 估计移动成本对于了解动物的能量和生命史策略至关重要.
- 总体动态体加速 (ODBA) 是自由活动动物的能量消耗 (EE) 的常见代数.
- 在使用身体旋转或环境能量进行运动的物种中,ODBA的实用性较少被理解.
研究的目的:
- 为了评估各种传感器衍生的运动指标作为阿尔巴特罗斯EE的代理.
- 为了确定ODBA和替代指标在动态升和飞飞行期间的有效性.
主要方法:
- 两种鱼被装备了多传感器记录器 (心率计,加速度计,磁力计,GPS).
- 在不同的飞行模式中,分析了运动指标与心率衍生的V·O2 (间接的EE测量) 相比.
- 衡量标准和EE之间的关系在升和动期间进行了评估.
主要成果:
- 一个基于曲率轴角速度的度量有效估计了阿尔巴特罗斯在独家翔期间的EE.
- 在升期间,ODBA不是EE的有用代理,因为鱼利用风能.
- 翅膀的数量是一个有用的指标,用于比较EE在食之旅,尽管更低的翅膀持续时间.
结论:
- 动态飞行中的身体旋转具有能量成本,但这些成本低于飞行.
- 由于其广泛的飞行行为,ODBA是对鱼EE的不充分衡量.
- 除了ODBA之外的替代指标是必要的,以准确地估计具有复杂运动的动物的惯性传感器的EE,例如身体旋转.
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