Scaling of oscillatory kinematics and Froude efficiency in baleen whales.
Scaling of oscillatory kinematics and Froude efficiency in baleen whales.
复制标题
DOI：
10.1242/jeb.237586
复制
发表时间：
2021-07-01
期刊：
影响因子：
--
通讯作者：
Goldbogen JA
中科院分区：
文献类型：
--
作者：
Gough WT;Smith HJ;Savoca MS;Czapanskiy MF;Fish FE;Potvin J;Bierlich KC;Cade DE;Di Clemente J;Kennedy J;Segre P;Stanworth A;Weir C;Goldbogen JA
在许多脊椎动物中，从鱼类到鲸目动物，都进化出了具有高纵横比的高效率月形尾巴游泳。须鲸(Mystieti)是最大的游泳动物，表现出这种运动策略，并提供了一个理想的研究系统，以研究如何将游泳的形态和运动学扩大到最大的身体尺寸。我们使用鲸载惯性传感器的数据，结合无人机的形态测量数据，计算了6种须鲸在体长从5到25 m之间振荡游泳的水动力性能(长须鲸、长须鲸、布赖德鲸、北欧长须鲸、南极小须鲸、座头鲸、大长须鲸和蓝鲸)。我们发现，比质量推力随着游泳速度和身体尺寸的增加而增加。弗劳德效率，定义为有效功率输出与能量输入比率的比率()，通常随着游泳速度的增加而增加，但平均而言随着身体尺寸的增加而下降。这一发现与之前在较小动物身上的结果相反，在较小动物中，弗劳德效率随着身体尺寸的增加而增加。尽管我们对游泳须鲸阻力的经验参数估计高于简单的滑行模型，但在这个尺度上的振荡运动和其他熟练的游泳者一样，通常表现出很高的弗劳德效率。我们的结果量化了精细尺度的运动学，并在最大尺度上估计了常规和高能量昂贵游泳模式的水动力学。摘要：贴在须鲸身上的标签展示了推力输出、阻力系数和弗劳德效率如何随游泳速度和身体长度的变化而变化。
High efficiency lunate-tail swimming with high-aspect-ratio lifting surfaces has evolved in many vertebrate lineages, from fish to cetaceans. Baleen whales (Mysticeti) are the largest swimming animals that exhibit this locomotor strategy, and present an ideal study system to examine how morphology and the kinematics of swimming scale to the largest body sizes. We used data from whale-borne inertial sensors coupled with morphometric measurements from aerial drones to calculate the hydrodynamic performance of oscillatory swimming in six baleen whale species ranging in body length from 5 to 25 m (fin whale, Balaenoptera physalus; Bryde's whale, Balaenoptera edeni; sei whale, Balaenoptera borealis; Antarctic minke whale, Balaenoptera bonaerensis; humpback whale, Megaptera novaeangliae; and blue whale, Balaenoptera musculus). We found that mass-specific thrust increased with both swimming speed and body size. Froude efficiency, defined as the ratio of useful power output to the rate of energy input ( ), generally increased with swimming speed but decreased on average with increasing body size. This finding is contrary to previous results in smaller animals, where Froude efficiency increased with body size. Although our empirically parameterized estimates for swimming baleen whale drag were higher than those of a simple gliding model, oscillatory locomotion at this scale exhibits generally high Froude efficiency as in other adept swimmers. Our results quantify the fine-scale kinematics and estimate the hydrodynamics of routine and energetically expensive swimming modes at the largest scale. Summary: Tags attached to baleen whales demonstrate how thrust power output, drag coefficient and Froude efficiency scale with swimming speed and body length.
登录
查看更多内容
影响因子：
64.8
作者：
Donley, JM;Sepulveda, CA;Shadwick, RE
通讯作者：
Shadwick, RE
DOI：
10.1111/j.1748-1716.1995.tb09834.x
发表时间：
1995-01-01
期刊：
ACTA PHYSIOLOGICA SCANDINAVICA
影响因子：
--
作者：
BLIX, AS;FOLKOW, LP
通讯作者：
FOLKOW, LP
影响因子：
2.8
作者：
Cade, David E.;Barr, Kelly R.;Goldbogen, Jeremy A.
通讯作者：
Goldbogen, Jeremy A.
影响因子：
1.5
作者：
FISH, FE;BATTLE, JM
通讯作者：
BATTLE, JM
影响因子：
1.6
作者：
Fish, FE
通讯作者：
Fish, FE