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首页> 外文期刊>Canadian Journal of Zoology >Site familiarity affects antipredator behavior of the amphisbaenian Blanus cinereus
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Site familiarity affects antipredator behavior of the amphisbaenian Blanus cinereus

机译：站点熟悉度会影响两栖类两栖动物Blanus cinereus的反捕食行为

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Morphological adaptations of amphisbaenians to fossorial life might affect their antipredator-behavior decisions. Amphisbaenians exposed on the soil surface by a predator can escape by burrowing immediately or by using alternative defensive behaviors on the soil surface, and should decide where to burrow in order to return to their home range. We simulated in the laboratory predatory attacks toward individual amphisbaenians (Blanus cinereus), and examined whether their antipredator and burrowing responses were affected by site familiarity (familiar versus unfamiliar substrate) and their internal state (i.e., body temperature and associated burrowing performance). Amphisbaenians showed significantly longer episodes of alternative antipredator behaviors on the soil surface (coiling and still) when the temperature was low. Before starting to burrow in unfamiliar substrates, individuals emitted numerous tongue flicks and moved for significantly longer periods of time than when on familiar substrates, independently of temperature. In contrast, in their own cages, with familiar substrates, amphisbaenians performed only a few tongue flicks before starting to burrow. Subsequently, the time spent burrowing was significantly longer when the temperature was low or amphisbaenians were on an unfamiliar substrate. These results suggest that amphisbaenians are able to recognize their own home range by chemosensory cues and that they are able to use this information when deciding where to burrow to escape from potential predators. [References: 43]
机译：amphisbaenians的形态适应适应生活可能会影响其反捕食行为的决定。被捕食者暴露在土壤表面的两栖类动物可以立即挖洞或通过在土壤表面采取其他防御行为逃脱，并应决定在哪里挖洞才​​能返回家园。我们在实验室中模拟了针对单个两栖动物（Blanus cinereus）的掠食性攻击，并检查了它们的抗捕食者和穴居反应是否受到场所熟悉度（熟悉与不熟悉的基质）及其内部状态（即体温和相关穴居表现）的影响。当温度较低时，两栖类在土壤表面（卷曲和静止）表现出明显更长的反掠食行为。在不熟悉的底物上挖洞之前，与在熟悉的底物上相比，与温度无关，个体发出大量的甩舌，并且移动的时间长得多。相比之下，两栖动物在自己的笼子中，在熟悉的底物下，只钻了几次舌头就开始挖洞。随后，当温度较低或两栖类动物不熟悉时，挖洞所花费的时间明显更长。这些结果表明，两栖动物能够通过化学感应线索识别自己的家境，并且在决定从何处逃避潜在掠食者的洞穴时，他们能够使用此信息。 [参考：43]

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