Laboratory of Regulatory Biology, Department of Biology, Faculty of Science, University of Toyama, Toyama 930-8555, Japan.
Laboratory of Regulatory Biology, Graduate School of Innovative Life Sciences, University of Toyama, Toyama 930-8555, Japan.
Zoolog Sci. 2023 Feb;40(1):1-6. doi: 10.2108/zs220059.
Psychophysiological studies in vertebrates have focused on taxes as indicators of behavioral change. Actually, a considerable number of studies about anxiety-like and anti-anxiety-like behaviors involving geotaxis, scototaxis, and thigmotaxis have been conducted on fish. However, few analyses considering these behaviors based on taxes in fish have been conducted. Here, using goldfish, we measured the time spent in the bright or dark area of a horizontally long rectangular tank (HLRT), in the upper or lower area of a vertically long rectangular tank (VLRT), and in the central or edge area of a circular tank (CT), respectively, for the first 30 min and the last 30 min in a 3-h period after fish had been introduced to tanks. Dark, lower, and edge preference behaviors were observed for the first 30 min in all tanks. While dark and edge preference behaviors were maintained even for the last 30 min, the lower preference was lost. Swimming distance and the number of area crossings in each tank were also compared between the first 30 min and the last 30 min. Both decreased significantly or tended to decrease in the last 30 min in the HLRT and the CT, but no change was observed in the VLRT. These results suggest that, in goldfish, preference behavior is stable for a short time, and that environmental habituation may depend on the shape of the tank and the elapsed time.
脊椎动物的心理生理学研究集中在作为行为变化指标的生物节律上。实际上，已经有相当数量的关于涉及趋地性、趋光性和趋触性的类似焦虑和抗焦虑行为的鱼类研究。然而，很少有基于鱼类生物节律的这些行为的分析。在这里，我们使用金鱼，在将鱼引入鱼缸后的 3 小时内，分别测量它们在前 30 分钟和后 30 分钟内在水平长矩形鱼缸（HLRT）的亮区或暗区、垂直长矩形鱼缸（VLRT）的上区或下区以及圆形鱼缸（CT）的中央区或边缘区所花费的时间。在前 30 分钟，所有鱼缸中都观察到了暗区、下区和边缘偏好行为。虽然在最后 30 分钟，暗区和边缘偏好行为仍然保持，但下区偏好行为消失了。我们还比较了在前 30 分钟和后 30 分钟内每个鱼缸中的游泳距离和区域穿越次数。在前 30 分钟和后 30 分钟内，HLRT 和 CT 中的游泳距离和区域穿越次数都显著减少或有减少的趋势，但 VLRT 中没有观察到变化。这些结果表明，在金鱼中，偏好行为在短时间内是稳定的，环境习惯化可能取决于鱼缸的形状和时间的流逝。
