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首页> 外文期刊>Biology Open >Effect of initial body orientation on escape probability of prey fish escaping from predators
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Effect of initial body orientation on escape probability of prey fish escaping from predators

机译：初始身体取向对从掠食者逃脱的pre鱼逃逸概率的影响

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The kinematic and behavioral components of the escape response can affect the outcomes of predator-prey interactions. For example, because sensory perception range can have spatial bias, and because turn duration before the initiation of escape locomotion can be smaller when prey is oriented away from predators, the prey's body orientation relative to a predator at the onset of the escape response (initial orientation) could affect whether prey successfully evade predators. We tested this hypothesis by recording the escape responses of juvenile red sea bream (Pagrus major) to the predatory scorpion fish (Sebastiscus marmoratus). Flight initiation distance tended to be small when prey were attacked from behind, suggesting that prey have spatial bias in detecting attacking predators. An increase in flight initiation distance increased escape probability. An increase in initial orientation decreased turn duration and increased escape probability when the effect of flight initiation distance was offset. These results suggest that initial orientation affects escape probability through two different pathways: changes in flight initiation distance and turn duration. These findings highlight the importance of incorporating initial orientation into other studies of the kinematics of predator-prey interactions.
机译：逃避反应的运动学和行为成分会影响食肉动物与猎物相互作用的结果。例如，由于感官知觉范围可能具有空间偏差，并且当猎物远离掠食者定向时，逃逸运动开始之前的转向持续时间可能会更短，因此在逃避反应开始时，猎物相对于掠食者的身体方位（初始方向）可能会影响猎物是否成功逃避捕食者。我们通过记录少年红鲷（Pagrus major）对掠夺性蝎鱼（Sebastiscus marmoratus）的逃逸反应来检验该假设。当从后面攻击猎物时，飞行起始距离往往较小，这表明猎物在检测攻击食肉动物时具有空间偏差。飞行起始距离的增加会增加逃生几率。当抵消了飞行起始距离的影响时，初始方向的增加会减少转弯持续时间，并增加逃生概率。这些结果表明，初始定向通过两种不同的途径影响逃生概率：飞行起始距离的变化和转弯持续时间。这些发现凸显了将初始方向纳入捕食者与猎物相互作用运动学的其他研究的重要性。

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