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首页> 外文期刊>Behaviour >Directional escape strategy by the striped plateau lizard (Sceloporus virgatus): turning to direct escape away from predators at variable escape angles
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Directional escape strategy by the striped plateau lizard (Sceloporus virgatus): turning to direct escape away from predators at variable escape angles

机译：条纹高原蜥蜴（Sceloporus virgatus）的定向逃生策略：转向以可变的逃生角度将逃生者从食肉动物中逃离

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摘要

A prey's orientation to a predator's approach path affects risk of fleeing straight ahead. By turning to flee closer to straight away from the predator before fleeing, prey can reduce risk. Laboratory studies suggest that escape angles should lead away from predators and be unpredictable. I studied orientation, turn, and escape angles and in a study of striped plateau lizards, Sceloporus virgatus. Lizards fled away from a predator, but often not straight away. Escape angles were variable and bimodally distributed: one mode was straight away for distancing prey from predator and one was near 90 degrees, which maintains ability to monitor the predator or requires turning by the predator. Turn angles increased as orientation shifted toward the predator. Escape angle was closer to straight away when turn angle was larger, but turning did not fully compensate for degree of orientation toward the predator. Directional escape strategies of diverse prey are compared.
机译：猎物朝向捕食者的进近路径的方位会影响直接逃离的风险。通过在逃跑之前转向逃离捕食者，使其更接近直线，猎物可以降低风险。实验室研究表明，逃逸角应远离掠食者且不可预测。我研究了定向角，转角和逃逸角，并研究了条纹高原蜥蜴（Scoloporus virgatus）。蜥蜴逃离捕食者，但往往不是立刻逃走。逃逸角是可变的并且是双峰分布的：一种模式是直接使捕食者远离捕食者，而另一种则接近90度，这保持了监视捕食者的能力或需要被捕食者转向。转弯角度随着朝向捕食者的移动而增加。转角较大时，转角越接近直线，但转角不能完全补偿朝向捕食者的定向度。比较了不同猎物的定向逃生策略。

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