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The ontogeny of continuous quantity discrimination in zebrafish larvae (Danio rerio).
Animal Cognition ( IF 2.7 ) Pub Date : 2020-04-15 , DOI: 10.1007/s10071-020-01384-1
Maria Santacà 1 , Christian Agrillo 1, 2 , Maria Elena Miletto Petrazzini 3 , Angelo Bisazza 1, 2
Affiliation  

Several studies have investigated the ontogeny of the capacity to discriminate between discrete numerical information in human and non-human animals. Contrarily, less attention has been devoted to the development of the capacity to discriminate continuous quantities. Recently, we set up a fast procedure for screening continuous quantity abilities in adult individuals of an animal model in neurodevelopmental research, the zebrafish. Two different sized holes are presented in a wall that divides the home tank in two halves and the spontaneous preference of fish for passing through the larger hole is exploited to measure their discrimination ability. We tested zebrafish larvae in the first, second and third week of life varying the relative size of the smaller circle (0.60, 0.75, 0.86, 0.91 area ratio). We found that the number of passages increased across the age. The capacity to discriminate the larger hole decreased as the ratio between the areas increased. No difference in accuracy was found as a function of age. The accuracy of larval zebrafish almost overlaps that found in adults in a previous study, suggesting a limited role of maturation and experience on the ability to estimate areas in this species.

中文翻译:

斑马鱼幼虫(Danio rerio)中连续数量歧视的存在。

几项研究已经研究了区分人类和非人类动物离散数值信息的能力的本体论。相反,对区分连续数量的能力的关注较少。最近,我们建立了一种快速程序,用于在神经发育研究斑马鱼中筛选动物模型的成年个体中的连续数量能力。墙上有两个不同尺寸的孔,将家用水箱分为两半,并利用鱼类自发通过较大孔的偏好来衡量它们的辨别能力。我们在生命的第一,第二和第三周测试了斑马鱼的幼虫,改变了较小圆的相对大小(面积比为0.60、0.75、0.86、0.91)。我们发现,随着年龄的增长,通过的次数增加了。随着面积比的增加,辨别较大孔的能力降低。没有发现准确性随年龄的变化。幼虫斑马鱼的准确性几乎与成人在以前的研究中发现的重叠,这表明成熟度和经验对估计该物种面积的能力作用有限。
更新日期:2020-04-15
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