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首页> 外文期刊>Marine ecology >Scales of predator detection behavior and escape in Fissurella limbata: A field and laboratory assessment
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Scales of predator detection behavior and escape in Fissurella limbata: A field and laboratory assessment

机译：捕食性行为和游走在Fissurella limbata中的规模：现场和实验室评估

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The consumptive effects of predators are widely acknowledged, but predation can also impact prey populations through non-consumptive effects (NCEs) such as costly antipredator behavioral responses. The magnitude of antipredator behavioral responses by prey is determined by an assessment of risk using sensory cues, which in turn is modulated by the environmental context. We studied the detection behavior and escape response of the keyhole limpet Fissurella limbata from the predatory sea star Heliaster helianthus. Through laboratory and field experimental trials, we quantified the distance and time of predator detection behavior by the prey, and measured their active escape responses when elicited. We found that predator detection by the limpet was chiefly mediated by distance, with experimental individuals capable of detecting predator presence effectively up to distances of at least 50cm in the field and 70cm under laboratory conditions. Our results indicate that this prey species is able to evaluate the proximity of its predator and use it as an indication of predation risk; therefore, predator-prey distance appears to be a primary predictor of the magnitude of the antipredator response. Given the tight relationship between predator distance and prey movement and the important role herbivores can play, particularly in this ecosystem, we expect that NCEs will cascade to the patterns of abundance and composition of rocky shore communities through changes in prey foraging behavior under risk.
机译：捕食者的消费效应已得到广泛认可，但捕食也会通过非消费效应（NCE）（例如代价高昂的反捕食者行为反应）影响猎物种群。捕食者对捕食者的行为反应的大小取决于使用感官提示对风险的评估，而感官提示又会受到环境因素的影响。我们研究了掠食性海星Helianthus的匙孔Fissurella limbata的检测行为和逃逸响应。通过实验室和野外试验，我们通过猎物量化了捕食者检测行为的距离和时间，并测量了它们被诱捕时的主动逃生反应。我们发现，帽贝对掠食者的检测主要是由距离介导的，实验人员能够有效地检测掠食者的存在，至少在野外至少有50cm的距离，而在实验室条件下可达70cm。我们的结果表明，该猎物物种能够评估其捕食者的接近程度，并将其用作捕食风险的指标。因此，捕食者-猎物的距离似乎是反捕食者反应强度的主要预测指标。鉴于掠食者的距离与猎物运动之间的紧密关系以及草食动物可以发挥的重要作用，尤其是在这个生态系统中，我们预计，NCEs将通过危险条件下猎物觅食行为的变化而级联到岩石海岸社区的丰度和组成模式。

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