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A semi-automatic and quantitative method to evaluate behavioral photosensitivity in animals based on the optomotor response (OMR)

机译:一种基于光动力反应(OMR)评估动物行为光敏性的半自动和定量方法

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The optomotor response (OMR) is a locomotor behavior of animals that is induced by moving repetitive visual stimuli. This characteristic helps animals particularly when stabilizing and maintaining position in schools and herds. Here, we developed a simple but sensitive method for quantifying the OMR using medaka (Oryzias latipes) as a model. This method, which simply requires video-recorded behavior, free tracking software, and a generic spreadsheet program, enables the evaluation of spectral sensitivity by researchers with little knowledge about the behavioral characteristics of the test animal or of the OMR. Based on a manual method, we reported previously that wild-type and red-colorblind medaka exhibited an OMR up to λ=830 and 740?nm, respectively. However, the present method, which quantifies the OMR according to three parameters (starting time, duration, and total distance of swimming) that are calculated based on a series of x–y coordinates of the moving fish, supported that conclusion and further indicated that both strains perceive light at even longer wavelengths. This low-cost, quantitative, and semi-automatic method would widen the opportunities to unveil behavioral photosensitivity in animals of interest.This article has an associated First Person interview with the first author of the paper.
机译:光动力反应(OMR)是动物的运动行为,是由重复运动的视觉刺激引起的。此特性特别是在稳定和维持学校和畜群中的位置时,对动物有帮助。在这里,我们开发了一种简单但灵敏的方法,使用medaka(Oryzias latipes)作为模型来量化OMR。这种方法仅需要视频记录的行为,免费跟踪软件和通用的电子表格程序,就可以使研究人员在对测试动物或OMR的行为特征知之甚少的情况下评估光谱灵敏度。基于手工方法,我们先前报道过,野生型和红色盲具有最高λ= 830和740nm的OMR。但是,根据根据运动鱼的一系列x-y坐标计算的三个参数(开始时间,持续时间和游泳总距离)对OMR进行量化的本方法支持该结论,并进一步指出:两种应变都能感知甚至更长波长的光。这种低成本,定量和半自动的方法将拓宽揭示感兴趣动物行为光敏性的机会。本文与本文的第一作者进行了第一人称访谈。

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