Laboratory of Animal Physiology and Behavior, Institute of Biosciences (Ib), Unesp, Botucatu, SP, Brazil.
Department of Ecosystem Science and Management, Center for Brain, Behavior & Cognition, Penn State University, University Park, PA, USA.
J Appl Anim Welf Sci. 2022 Oct-Dec;25(4):427-438. doi: 10.1080/10888705.2021.1980726. Epub 2021 Oct 13.
Information on fish preference for environmental conditions can be a useful tool to offer them what they want, an important requirement for welfare purposes. Giving that such an approach deals with psychological states of the fish, we investigated whether psychological stress affects fish preference. In this study, we found that the aversive condition of crossing a white open field did not change individual zebrafish's preference for color background or for plant enrichments, despite a great individual variability of preference response. We conclude that individual preferences for environmental conditions are maintained even following a psychological stressor, and highlight that variability in preference options among individuals raises questions about how to best improve welfare of grouped zebrafish.
有关鱼类对环境条件偏好的信息可以成为为它们提供所需之物的有用工具,这是福利目的的重要要求。鉴于这种方法涉及鱼类的心理状态,我们研究了心理压力是否会影响鱼类的偏好。在这项研究中,我们发现,穿越白色开阔场地的厌恶条件并没有改变个体斑马鱼对颜色背景或植物丰富度的偏好,尽管偏好反应存在很大的个体变异性。我们的结论是,即使在经历心理应激源之后,个体对环境条件的偏好仍然得以维持,并强调个体之间在偏好选择上的可变性提出了如何最好地提高成群斑马鱼福利的问题。