Beardsworth Christine E, Whiteside Mark A, Capstick Lucy A, Laker Philippa R, Langley Ellis J G, Nathan Ran, Orchan Yotam, Toledo Sivan, van Horik Jayden O, Madden Joah R
Centre for Research in Animal Behaviour, Psychology, University of Exeter, Exeter EX4 4QG, UK.
School of Biological and Marine Sciences, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK.
R Soc Open Sci. 2021 Mar 10;8(3):201758. doi: 10.1098/rsos.201758.
Memories about the spatial environment, such as the locations of foraging patches, are expected to affect how individuals move around the landscape. However, individuals differ in the ability to remember spatial locations (spatial cognitive ability) and evidence is growing that these inter-individual differences influence a range of fitness proxies. Yet empirical evaluations directly linking inter-individual variation in spatial cognitive ability and the development and structure of movement paths are lacking. We assessed the performance of young pheasants () on a spatial cognition task before releasing them into a novel, rural landscape and tracking their movements. We quantified changes in the straightness and speed of their transitory paths over one month. Birds with better performances on the task initially made slower transitory paths than poor performers but by the end of the month, there was no difference in speed. In general, birds increased the straightness of their path over time, indicating improved efficiency independent of speed, but this was not related to performance on the cognitive task. We suggest that initial slow movements may facilitate more detailed information gathering by better performers and indicates a potential link between an individual's spatial cognitive ability and their movement behaviour.
关于空间环境的记忆,例如觅食斑块的位置,预计会影响个体在景观中的移动方式。然而,个体在记忆空间位置的能力(空间认知能力)上存在差异,并且越来越多的证据表明这些个体间差异会影响一系列适应性指标。然而,缺乏直接将空间认知能力的个体间差异与移动路径的发展和结构联系起来的实证评估。我们在将幼年雉鸡放归到一个新的乡村景观并追踪它们的移动之前,评估了它们在空间认知任务上的表现。我们量化了它们一个月内过渡路径的直线度和速度变化。在任务中表现较好的鸟类最初的过渡路径比表现较差的鸟类慢,但到月底时,速度没有差异。总体而言,鸟类随着时间的推移提高了路径的直线度,表明效率提高且与速度无关,但这与认知任务的表现无关。我们认为,最初的缓慢移动可能有助于表现较好的个体收集更详细的信息,并表明个体的空间认知能力与其移动行为之间存在潜在联系。