动物通常在不同时间和/或环境下表现出与同一种群中其他个体不同的行为特征的一致性。即动物人格。我们目前对导致行为特征在动物一生中保持稳定或变得解耦的因素有相当不完整的理解。在这项研究中,我们研究了变态在新热带毒蛙动物人格发育中的作用,在发育过程中经历剧烈形态和生态变化的物种。我们使用实验室饲养的亮大腿毒蛙股骨Allobates个体来评估t阶段是否已经存在一致的个体差异,如果这些差异在整个变态过程中保持不变。我们发现了两种人格特质的证据,探索和大胆,已经存在于股a。t中。尽管形态发生了剧烈的变化,生理学,以及从t到变质的过渡中的栖息地,人格特质贯穿整个变态,提示测量的行为特征的生理和/或遗传基础。我们还发现,探索和大胆相关的行为与生长速度相关。与非常害羞和非探索性的人相比,非常大胆和探索性的人在变态之前花费的时间更少,这符合生命速度综合症的概念。这些发现为具有复杂生命周期的物种中产生人格的直接机制提供了重要见解。
Animals often show consistency in their behavioural repertoire across time and/or contexts that differs from other individuals of the same population, i.e. animal personality. We currently have quite an incomplete understanding of the factors that lead to behavioural traits remaining stable - or becoming decoupled - over an animal\'s lifetime. In this study, we investigated the role of metamorphosis in the development of animal personality in a Neotropical poison frog, a species that undergoes drastic morphological and ecological changes during its development. We used lab-reared individuals of the brilliant-thighed poison frog Allobates femoralis to assess if consistent individual differences are already present at the tadpole stage, and if these differences are maintained throughout metamorphosis. We found evidence for two personality traits,
exploration and boldness, already present in A. femoralis tadpoles. Despite the drastic changes in morphology, physiology, and habitat in the transition from tadpoles to metamorphs, personality traits persisted throughout metamorphosis, suggesting a physiological and/or genetic basis for the measured behavioural traits. We also found that
exploration and boldness related behaviours were correlated with growth speed. Very bold and explorative individuals took fewer days until metamorphosis compared to very shy and non-explorative ones, which is in line with the concept of a Pace-of-Life Syndrome. These findings provide important insights into the proximate mechanisms that generate personality in species with complex life cycles.