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首页> 外文期刊>Ecological research >Individual boldness is life stage-dependent and linked to dispersal in a hermaphrodite land snail
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Individual boldness is life stage-dependent and linked to dispersal in a hermaphrodite land snail

机译：个体的勇气与生活阶段有关，并与雌雄同体的蜗牛传播有关

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摘要

Both individual variation in dispersal tendency and animal personalities have been shown to be widespread in nature. They are often associated in personality-dependent dispersal, and both have major but underappreciated consequences for ecological and evolutionary dynamics. In addition, changes in animal personality can appear through ontogeny, leading to life stage-dependent behaviours. We investigated relationships between dispersal, life stage and boldness in an invertebrate with between- and within-life stages variation in dispersal tendency, the land snail Cornu aspersum. Latency to exit the shell following a simulated attack was repeatable, indicating boldness is a personality trait in Cornu aspersum. Subadults were bolder and more dispersive than adults. Dispersers were bolder than non-dispersers, independently of boldness changes between life stages. We discuss how these results can be explained in relation with life history strategies in this hermaphrodite species, in particular risk management in the context of reproductive investment.
机译：分散趋势的个体变化和动物性格均已证明在自然界很普遍。它们通常与人格相关的散布有关，并且两者都对生态和进化动力学产生重大但未被充分认识的后果。此外，动物个性的变化可通过个体发育出现，从而导致生命阶段依赖性行为。我们调查了无脊椎动物的扩散，生命阶段和胆量之间的关系，其中无脊椎动物和生命阶段之间的扩散趋势有所不同，这就是蜗牛蜗牛Cornu aspersum。模拟攻击后退出炮弹的延迟是可重复的，这表明胆大是Cornu香精的一种人格特质。亚成人比成人大胆，分散。分散剂比非分散剂更大胆，独立于生命阶段之间的大胆变化。我们讨论了如何将这些结果与该雌雄同体物种的生活史策略，尤其是生殖投资背景下的风险管理相结合进行解释。

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