Fanjul María Sol, Zenuto Roxana R
Grupo 'Ecología Fisiológica y del Comportamiento', Instituto de Investigaciones Marinas y Costeras, Universidad Nacional de Mar del Plata, Consejo Nacional de Investigaciones Científicas y Técnicas, Mar del Plata, Buenos Aires, Argentina.
PeerJ. 2020 Feb 18;8:e8490. doi: 10.7717/peerj.8490. eCollection 2020.
Animal personalities have been studied in a wide variety of taxa, but among rodents, available studies are relatively scarce and have focused mainly on social species. In this study, we evaluated the existence of personality in the solitary subterranean rodent . Specifically, we aimed to test individual differences in behavior that are stable over time and context in males of captured in the wild.
Our experimental design included two series of three behavioral tests each, carried out with a 35 day time interval. Each series included an Open Field test, a Social Encounter test, and an Open Field test with a predator stimulus.
Of the total recorded behaviors, 55.55% showed temporal consistency. Principal component analysis of consistent behaviors grouped them into four dimensions that explain inter individual behavioral variability, in order of importance: activity, socioaversion, boldness and exploration. Therefore, our results suggest that the concept of animal personality is applicable to and the dimensions found are in accordance with the ecological and behavioral characteristics of this species.
动物个性已在多种分类群中得到研究，但在啮齿动物中，现有研究相对较少，且主要集中在社会性物种上。在本研究中，我们评估了独居地下啮齿动物个性的存在情况。具体而言，我们旨在测试在野外捕获的雄性该物种个体在行为上随时间和环境变化而保持稳定的差异。
我们的实验设计包括两个系列，每个系列有三项行为测试，时间间隔为35天。每个系列包括旷场试验、社交接触试验和带有捕食者刺激的旷场试验。
在记录的所有行为中，55.55%表现出时间一致性。对一致行为进行主成分分析，将它们分为四个维度，按重要性顺序解释个体间行为变异性：活动、社交厌恶、大胆和探索。因此，我们的结果表明动物个性的概念适用于该物种，且所发现的维度与该物种的生态和行为特征相符。
