Faculty of Fisheries, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan.
Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan.
J Exp Biol. 2024 May 15;227(10). doi: 10.1242/jeb.246772. Epub 2024 May 16.
Identifying the kinematic and behavioral variables of prey that influence evasion from predator attacks remains challenging. To address this challenge, we have developed an automated escape system that responds quickly to an approaching predator and pulls the prey away from the predator rapidly, similar to real prey. Reaction distance, response latency, escape speed and other variables can be adjusted in the system. By repeatedly measuring the response latency and escape speed of the system, we demonstrated the system's ability to exhibit fast and rapid responses while maintaining consistency across successive trials. Using the live predatory fish species Coreoperca kawamebari, we show that escape speed and reaction distance significantly affect the outcome of predator-prey interactions. These findings indicate that the developed escape system is useful for identifying kinematic and behavioral features of prey that are critical for predator evasion, as well as for measuring the performance of predators.
确定影响猎物逃避捕食者攻击的运动学和行为变量仍然具有挑战性。为了解决这个挑战，我们开发了一种自动逃避系统，它可以快速响应接近的捕食者，并迅速将猎物从捕食者身边拉开，类似于真实的猎物。系统中可以调整反应距离、反应时、逃避速度等变量。通过反复测量系统的反应时和逃避速度，我们证明了系统在保持连续试验一致性的同时能够快速响应。使用活的掠食性鱼类 Coreoperca kawamebari，我们表明逃避速度和反应距离显著影响捕食者-猎物相互作用的结果。这些发现表明，开发的逃避系统对于确定对捕食者逃避至关重要的猎物运动学和行为特征以及测量捕食者的性能非常有用。
